graal-compiler: src/share/vm/classfile/classFileParser.cpp comparison

comparison src/share/vm/classfile/classFileParser.cpp @ 0:a61af66fc99e jdk7-b24

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author	duke
date	Sat, 01 Dec 2007 00:00:00 +0000
parents
children	ebec5b9731e2

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--1:000000000000
+:a61af66fc99e
+/*
+* Copyright 1997-2007 Sun Microsystems, Inc.  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.
+*
+* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+* CA 95054 USA or visit www.sun.com if you need additional information or
+* have any questions.
+*
+*/
+#include "incls/_precompiled.incl"
+#include "incls/_classFileParser.cpp.incl"
+// We generally try to create the oops directly when parsing, rather than allocating
+// temporary data structures and copying the bytes twice. A temporary area is only
+// needed when parsing utf8 entries in the constant pool and when parsing line number
+// tables.
+// We add assert in debug mode when class format is not checked.
+#define JAVA_CLASSFILE_MAGIC              0xCAFEBABE
+#define JAVA_MIN_SUPPORTED_VERSION        45
+#define JAVA_MAX_SUPPORTED_VERSION        50
+#define JAVA_MAX_SUPPORTED_MINOR_VERSION  0
+// Used for two backward compatibility reasons:
+// - to check for new additions to the class file format in JDK1.5
+// - to check for bug fixes in the format checker in JDK1.5
+#define JAVA_1_5_VERSION                  49
+// Used for backward compatibility reasons:
+// - to check for javac bug fixes that happened after 1.5
+#define JAVA_6_VERSION                    50
+void ClassFileParser::parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS) {
+// Use a local copy of ClassFileStream. It helps the C++ compiler to optimize
+// this function (_current can be allocated in a register, with scalar
+// replacement of aggregates). The _current pointer is copied back to
+// stream() when this function returns. DON'T call another method within
+// this method that uses stream().
+ClassFileStream* cfs0 = stream();
+ClassFileStream cfs1 = *cfs0;
+ClassFileStream* cfs = &cfs1;
+#ifdef ASSERT
+u1* old_current = cfs0->current();
+#endif
+// Used for batching symbol allocations.
+const char* names[SymbolTable::symbol_alloc_batch_size];
+int lengths[SymbolTable::symbol_alloc_batch_size];
+int indices[SymbolTable::symbol_alloc_batch_size];
+unsigned int hashValues[SymbolTable::symbol_alloc_batch_size];
+int names_count = 0;
+// parsing  Index 0 is unused
+for (int index = 1; index < length; index++) {
+// Each of the following case guarantees one more byte in the stream
+// for the following tag or the access_flags following constant pool,
+// so we don't need bounds-check for reading tag.
+u1 tag = cfs->get_u1_fast();
+switch (tag) {
+case JVM_CONSTANT_Class :
+{
+cfs->guarantee_more(3, CHECK);  // name_index, tag/access_flags
+u2 name_index = cfs->get_u2_fast();
+cp->klass_index_at_put(index, name_index);
+}
+break;
+case JVM_CONSTANT_Fieldref :
+{
+cfs->guarantee_more(5, CHECK);  // class_index, name_and_type_index, tag/access_flags
+u2 class_index = cfs->get_u2_fast();
+u2 name_and_type_index = cfs->get_u2_fast();
+cp->field_at_put(index, class_index, name_and_type_index);
+}
+break;
+case JVM_CONSTANT_Methodref :
+{
+cfs->guarantee_more(5, CHECK);  // class_index, name_and_type_index, tag/access_flags
+u2 class_index = cfs->get_u2_fast();
+u2 name_and_type_index = cfs->get_u2_fast();
+cp->method_at_put(index, class_index, name_and_type_index);
+}
+break;
+case JVM_CONSTANT_InterfaceMethodref :
+{
+cfs->guarantee_more(5, CHECK);  // class_index, name_and_type_index, tag/access_flags
+u2 class_index = cfs->get_u2_fast();
+u2 name_and_type_index = cfs->get_u2_fast();
+cp->interface_method_at_put(index, class_index, name_and_type_index);
+}
+break;
+case JVM_CONSTANT_String :
+{
+cfs->guarantee_more(3, CHECK);  // string_index, tag/access_flags
+u2 string_index = cfs->get_u2_fast();
+cp->string_index_at_put(index, string_index);
+}
+break;
+case JVM_CONSTANT_Integer :
+{
+cfs->guarantee_more(5, CHECK);  // bytes, tag/access_flags
+u4 bytes = cfs->get_u4_fast();
+cp->int_at_put(index, (jint) bytes);
+}
+break;
+case JVM_CONSTANT_Float :
+{
+cfs->guarantee_more(5, CHECK);  // bytes, tag/access_flags
+u4 bytes = cfs->get_u4_fast();
+cp->float_at_put(index, *(jfloat*)&bytes);
+}
+break;
+case JVM_CONSTANT_Long :
+// A mangled type might cause you to overrun allocated memory
+guarantee_property(index+1 < length,
+"Invalid constant pool entry %u in class file %s",
+index, CHECK);
+{
+cfs->guarantee_more(9, CHECK);  // bytes, tag/access_flags
+u8 bytes = cfs->get_u8_fast();
+cp->long_at_put(index, bytes);
+}
+index++;   // Skip entry following eigth-byte constant, see JVM book p. 98
+break;
+case JVM_CONSTANT_Double :
+// A mangled type might cause you to overrun allocated memory
+guarantee_property(index+1 < length,
+"Invalid constant pool entry %u in class file %s",
+index, CHECK);
+{
+cfs->guarantee_more(9, CHECK);  // bytes, tag/access_flags
+u8 bytes = cfs->get_u8_fast();
+cp->double_at_put(index, *(jdouble*)&bytes);
+}
+index++;   // Skip entry following eigth-byte constant, see JVM book p. 98
+break;
+case JVM_CONSTANT_NameAndType :
+{
+cfs->guarantee_more(5, CHECK);  // name_index, signature_index, tag/access_flags
+u2 name_index = cfs->get_u2_fast();
+u2 signature_index = cfs->get_u2_fast();
+cp->name_and_type_at_put(index, name_index, signature_index);
+}
+break;
+case JVM_CONSTANT_Utf8 :
+{
+cfs->guarantee_more(2, CHECK);  // utf8_length
+u2  utf8_length = cfs->get_u2_fast();
+u1* utf8_buffer = cfs->get_u1_buffer();
+assert(utf8_buffer != NULL, "null utf8 buffer");
+// Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward.
+cfs->guarantee_more(utf8_length+1, CHECK);  // utf8 string, tag/access_flags
+cfs->skip_u1_fast(utf8_length);
+// Before storing the symbol, make sure it's legal
+if (_need_verify) {
+verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK);
+}
+unsigned int hash;
+symbolOop result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash);
+if (result == NULL) {
+names[names_count] = (char*)utf8_buffer;
+lengths[names_count] = utf8_length;
+indices[names_count] = index;
+hashValues[names_count++] = hash;
+if (names_count == SymbolTable::symbol_alloc_batch_size) {
+oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
+names_count = 0;
+}
+} else {
+cp->symbol_at_put(index, result);
+}
+}
+break;
+default:
+classfile_parse_error(
+"Unknown constant tag %u in class file %s", tag, CHECK);
+break;
+}
+}
+// Allocate the remaining symbols
+if (names_count > 0) {
+oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
+}
+// Copy _current pointer of local copy back to stream().
+#ifdef ASSERT
+assert(cfs0->current() == old_current, "non-exclusive use of stream()");
+#endif
+cfs0->set_current(cfs1.current());
+}
+bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); }
+constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) {
+ClassFileStream* cfs = stream();
+constantPoolHandle nullHandle;
+cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag
+u2 length = cfs->get_u2_fast();
+guarantee_property(
+length >= 1, "Illegal constant pool size %u in class file %s",
+length, CHECK_(nullHandle));
+constantPoolOop constant_pool =
+oopFactory::new_constantPool(length, CHECK_(nullHandle));
+constantPoolHandle cp (THREAD, constant_pool);
+cp->set_partially_loaded();    // Enables heap verify to work on partial constantPoolOops
+// parsing constant pool entries
+parse_constant_pool_entries(cp, length, CHECK_(nullHandle));
+int index = 1;  // declared outside of loops for portability
+// first verification pass - validate cross references and fixup class and string constants
+for (index = 1; index < length; index++) {          // Index 0 is unused
+switch (cp->tag_at(index).value()) {
+case JVM_CONSTANT_Class :
+ShouldNotReachHere();     // Only JVM_CONSTANT_ClassIndex should be present
+break;
+case JVM_CONSTANT_Fieldref :
+// fall through
+case JVM_CONSTANT_Methodref :
+// fall through
+case JVM_CONSTANT_InterfaceMethodref : {
+if (!_need_verify) break;
+int klass_ref_index = cp->klass_ref_index_at(index);
+int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
+check_property(valid_cp_range(klass_ref_index, length) &&
+cp->tag_at(klass_ref_index).is_klass_reference(),
+"Invalid constant pool index %u in class file %s",
+klass_ref_index,
+CHECK_(nullHandle));
+check_property(valid_cp_range(name_and_type_ref_index, length) &&
+cp->tag_at(name_and_type_ref_index).is_name_and_type(),
+"Invalid constant pool index %u in class file %s",
+name_and_type_ref_index,
+CHECK_(nullHandle));
+break;
+}
+case JVM_CONSTANT_String :
+ShouldNotReachHere();     // Only JVM_CONSTANT_StringIndex should be present
+break;
+case JVM_CONSTANT_Integer :
+break;
+case JVM_CONSTANT_Float :
+break;
+case JVM_CONSTANT_Long :
+case JVM_CONSTANT_Double :
+index++;
+check_property(
+(index < length && cp->tag_at(index).is_invalid()),
+"Improper constant pool long/double index %u in class file %s",
+index, CHECK_(nullHandle));
+break;
+case JVM_CONSTANT_NameAndType : {
+if (!_need_verify) break;
+int name_ref_index = cp->name_ref_index_at(index);
+int signature_ref_index = cp->signature_ref_index_at(index);
+check_property(
+valid_cp_range(name_ref_index, length) &&
+cp->tag_at(name_ref_index).is_utf8(),
+"Invalid constant pool index %u in class file %s",
+name_ref_index, CHECK_(nullHandle));
+check_property(
+valid_cp_range(signature_ref_index, length) &&
+cp->tag_at(signature_ref_index).is_utf8(),
+"Invalid constant pool index %u in class file %s",
+signature_ref_index, CHECK_(nullHandle));
+break;
+}
+case JVM_CONSTANT_Utf8 :
+break;
+case JVM_CONSTANT_UnresolvedClass :         // fall-through
+case JVM_CONSTANT_UnresolvedClassInError:
+ShouldNotReachHere();     // Only JVM_CONSTANT_ClassIndex should be present
+break;
+case JVM_CONSTANT_ClassIndex :
+{
+int class_index = cp->klass_index_at(index);
+check_property(
+valid_cp_range(class_index, length) &&
+cp->tag_at(class_index).is_utf8(),
+"Invalid constant pool index %u in class file %s",
+class_index, CHECK_(nullHandle));
+cp->unresolved_klass_at_put(index, cp->symbol_at(class_index));
+}
+break;
+case JVM_CONSTANT_UnresolvedString :
+ShouldNotReachHere();     // Only JVM_CONSTANT_StringIndex should be present
+break;
+case JVM_CONSTANT_StringIndex :
+{
+int string_index = cp->string_index_at(index);
+check_property(
+valid_cp_range(string_index, length) &&
+cp->tag_at(string_index).is_utf8(),
+"Invalid constant pool index %u in class file %s",
+string_index, CHECK_(nullHandle));
+symbolOop sym = cp->symbol_at(string_index);
+cp->unresolved_string_at_put(index, sym);
+}
+break;
+default:
+fatal1("bad constant pool tag value %u", cp->tag_at(index).value());
+ShouldNotReachHere();
+break;
+} // end of switch
+} // end of for
+if (!_need_verify) {
+return cp;
+}
+// second verification pass - checks the strings are of the right format.
+for (index = 1; index < length; index++) {
+jbyte tag = cp->tag_at(index).value();
+switch (tag) {
+case JVM_CONSTANT_UnresolvedClass: {
+symbolHandle class_name(THREAD, cp->unresolved_klass_at(index));
+verify_legal_class_name(class_name, CHECK_(nullHandle));
+break;
+}
+case JVM_CONSTANT_Fieldref:
+case JVM_CONSTANT_Methodref:
+case JVM_CONSTANT_InterfaceMethodref: {
+int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
+// already verified to be utf8
+int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index);
+// already verified to be utf8
+int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index);
+symbolHandle name(THREAD, cp->symbol_at(name_ref_index));
+symbolHandle signature(THREAD, cp->symbol_at(signature_ref_index));
+if (tag == JVM_CONSTANT_Fieldref) {
+verify_legal_field_name(name, CHECK_(nullHandle));
+verify_legal_field_signature(name, signature, CHECK_(nullHandle));
+} else {
+verify_legal_method_name(name, CHECK_(nullHandle));
+verify_legal_method_signature(name, signature, CHECK_(nullHandle));
+if (tag == JVM_CONSTANT_Methodref) {
+// 4509014: If a class method name begins with '<', it must be "<init>".
+assert(!name.is_null(), "method name in constant pool is null");
+unsigned int name_len = name->utf8_length();
+assert(name_len > 0, "bad method name");  // already verified as legal name
+if (name->byte_at(0) == '<') {
+if (name() != vmSymbols::object_initializer_name()) {
+classfile_parse_error(
+"Bad method name at constant pool index %u in class file %s",
+name_ref_index, CHECK_(nullHandle));
+}
+}
+}
+}
+break;
+}
+}  // end of switch
+}  // end of for
+return cp;
+}
+class NameSigHash: public ResourceObj {
+public:
+symbolOop     _name;       // name
+symbolOop     _sig;        // signature
+NameSigHash*  _next;       // Next entry in hash table
+};
+#define HASH_ROW_SIZE 256
+unsigned int hash(symbolOop name, symbolOop sig) {
+unsigned int raw_hash = 0;
+raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2);
+raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize;
+return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE;
+}
+void initialize_hashtable(NameSigHash** table) {
+memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE);
+}
+// Return false if the name/sig combination is found in table.
+// Return true if no duplicate is found. And name/sig is added as a new entry in table.
+// The old format checker uses heap sort to find duplicates.
+// NOTE: caller should guarantee that GC doesn't happen during the life cycle
+// of table since we don't expect symbolOop's to move.
+bool put_after_lookup(symbolOop name, symbolOop sig, NameSigHash** table) {
+assert(name != NULL, "name in constant pool is NULL");
+// First lookup for duplicates
+int index = hash(name, sig);
+NameSigHash* entry = table[index];
+while (entry != NULL) {
+if (entry->_name == name && entry->_sig == sig) {
+return false;
+}
+entry = entry->_next;
+}
+// No duplicate is found, allocate a new entry and fill it.
+entry = new NameSigHash();
+entry->_name = name;
+entry->_sig = sig;
+// Insert into hash table
+entry->_next = table[index];
+table[index] = entry;
+return true;
+}
+objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp,
+int length,
+Handle class_loader,
+Handle protection_domain,
+PerfTraceTime* vmtimer,
+symbolHandle class_name,
+TRAPS) {
+ClassFileStream* cfs = stream();
+assert(length > 0, "only called for length>0");
+objArrayHandle nullHandle;
+objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+objArrayHandle interfaces (THREAD, interface_oop);
+int index;
+for (index = 0; index < length; index++) {
+u2 interface_index = cfs->get_u2(CHECK_(nullHandle));
+check_property(
+valid_cp_range(interface_index, cp->length()) &&
+cp->tag_at(interface_index).is_unresolved_klass(),
+"Interface name has bad constant pool index %u in class file %s",
+interface_index, CHECK_(nullHandle));
+symbolHandle unresolved_klass (THREAD, cp->klass_name_at(interface_index));
+// Don't need to check legal name because it's checked when parsing constant pool.
+// But need to make sure it's not an array type.
+guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY,
+"Bad interface name in class file %s", CHECK_(nullHandle));
+vmtimer->suspend();  // do not count recursive loading twice
+// Call resolve_super so classcircularity is checked
+klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
+unresolved_klass, class_loader, protection_domain,
+false, CHECK_(nullHandle));
+KlassHandle interf (THREAD, k);
+vmtimer->resume();
+if (!Klass::cast(interf())->is_interface()) {
+THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle);
+}
+interfaces->obj_at_put(index, interf());
+}
+if (!_need_verify || length <= 1) {
+return interfaces;
+}
+// Check if there's any duplicates in interfaces
+ResourceMark rm(THREAD);
+NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, NameSigHash*, HASH_ROW_SIZE);
+initialize_hashtable(interface_names);
+bool dup = false;
+{
+debug_only(No_Safepoint_Verifier nsv;)
+for (index = 0; index < length; index++) {
+klassOop k = (klassOop)interfaces->obj_at(index);
+symbolOop name = instanceKlass::cast(k)->name();
+// If no duplicates, add (name, NULL) in hashtable interface_names.
+if (!put_after_lookup(name, NULL, interface_names)) {
+dup = true;
+break;
+}
+}
+}
+if (dup) {
+classfile_parse_error("Duplicate interface name in class file %s",
+CHECK_(nullHandle));
+}
+return interfaces;
+}
+void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) {
+// Make sure the constant pool entry is of a type appropriate to this field
+guarantee_property(
+(constantvalue_index > 0 &&
+constantvalue_index < cp->length()),
+"Bad initial value index %u in ConstantValue attribute in class file %s",
+constantvalue_index, CHECK);
+constantTag value_type = cp->tag_at(constantvalue_index);
+switch ( cp->basic_type_for_signature_at(signature_index) ) {
+case T_LONG:
+guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK);
+break;
+case T_FLOAT:
+guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK);
+break;
+case T_DOUBLE:
+guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK);
+break;
+case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT:
+guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK);
+break;
+case T_OBJECT:
+guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;", 18)
+&& (value_type.is_string() || value_type.is_unresolved_string())),
+"Bad string initial value in class file %s", CHECK);
+break;
+default:
+classfile_parse_error(
+"Unable to set initial value %u in class file %s",
+constantvalue_index, CHECK);
+}
+}
+// Parse attributes for a field.
+void ClassFileParser::parse_field_attributes(constantPoolHandle cp,
+u2 attributes_count,
+bool is_static, u2 signature_index,
+u2* constantvalue_index_addr,
+bool* is_synthetic_addr,
+u2* generic_signature_index_addr,
+typeArrayHandle* field_annotations,
+TRAPS) {
+ClassFileStream* cfs = stream();
+assert(attributes_count > 0, "length should be greater than 0");
+u2 constantvalue_index = 0;
+u2 generic_signature_index = 0;
+bool is_synthetic = false;
+u1* runtime_visible_annotations = NULL;
+int runtime_visible_annotations_length = 0;
+u1* runtime_invisible_annotations = NULL;
+int runtime_invisible_annotations_length = 0;
+while (attributes_count--) {
+cfs->guarantee_more(6, CHECK);  // attribute_name_index, attribute_length
+u2 attribute_name_index = cfs->get_u2_fast();
+u4 attribute_length = cfs->get_u4_fast();
+check_property(valid_cp_range(attribute_name_index, cp->length()) &&
+cp->tag_at(attribute_name_index).is_utf8(),
+"Invalid field attribute index %u in class file %s",
+attribute_name_index,
+CHECK);
+symbolOop attribute_name = cp->symbol_at(attribute_name_index);
+if (is_static && attribute_name == vmSymbols::tag_constant_value()) {
+// ignore if non-static
+if (constantvalue_index != 0) {
+classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK);
+}
+check_property(
+attribute_length == 2,
+"Invalid ConstantValue field attribute length %u in class file %s",
+attribute_length, CHECK);
+constantvalue_index = cfs->get_u2(CHECK);
+if (_need_verify) {
+verify_constantvalue(constantvalue_index, signature_index, cp, CHECK);
+}
+} else if (attribute_name == vmSymbols::tag_synthetic()) {
+if (attribute_length != 0) {
+classfile_parse_error(
+"Invalid Synthetic field attribute length %u in class file %s",
+attribute_length, CHECK);
+}
+is_synthetic = true;
+} else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120
+if (attribute_length != 0) {
+classfile_parse_error(
+"Invalid Deprecated field attribute length %u in class file %s",
+attribute_length, CHECK);
+}
+} else if (_major_version >= JAVA_1_5_VERSION) {
+if (attribute_name == vmSymbols::tag_signature()) {
+if (attribute_length != 2) {
+classfile_parse_error(
+"Wrong size %u for field's Signature attribute in class file %s",
+attribute_length, CHECK);
+}
+generic_signature_index = cfs->get_u2(CHECK);
+} else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
+runtime_visible_annotations_length = attribute_length;
+runtime_visible_annotations = cfs->get_u1_buffer();
+assert(runtime_visible_annotations != NULL, "null visible annotations");
+cfs->skip_u1(runtime_visible_annotations_length, CHECK);
+} else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
+runtime_invisible_annotations_length = attribute_length;
+runtime_invisible_annotations = cfs->get_u1_buffer();
+assert(runtime_invisible_annotations != NULL, "null invisible annotations");
+cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
+} else {
+cfs->skip_u1(attribute_length, CHECK);  // Skip unknown attributes
+}
+} else {
+cfs->skip_u1(attribute_length, CHECK);  // Skip unknown attributes
+}
+}
+*constantvalue_index_addr = constantvalue_index;
+*is_synthetic_addr = is_synthetic;
+*generic_signature_index_addr = generic_signature_index;
+*field_annotations = assemble_annotations(runtime_visible_annotations,
+runtime_visible_annotations_length,
+runtime_invisible_annotations,
+runtime_invisible_annotations_length,
+CHECK);
+return;
+}
+// Field allocation types. Used for computing field offsets.
+enum FieldAllocationType {
+STATIC_OOP,           // Oops
+STATIC_BYTE,          // Boolean, Byte, char
+STATIC_SHORT,         // shorts
+STATIC_WORD,          // ints
+STATIC_DOUBLE,        // long or double
+STATIC_ALIGNED_DOUBLE,// aligned long or double
+NONSTATIC_OOP,
+NONSTATIC_BYTE,
+NONSTATIC_SHORT,
+NONSTATIC_WORD,
+NONSTATIC_DOUBLE,
+NONSTATIC_ALIGNED_DOUBLE
+};
+struct FieldAllocationCount {
+int static_oop_count;
+int static_byte_count;
+int static_short_count;
+int static_word_count;
+int static_double_count;
+int nonstatic_oop_count;
+int nonstatic_byte_count;
+int nonstatic_short_count;
+int nonstatic_word_count;
+int nonstatic_double_count;
+};
+typeArrayHandle ClassFileParser::parse_fields(constantPoolHandle cp, bool is_interface,
+struct FieldAllocationCount *fac,
+objArrayHandle* fields_annotations, TRAPS) {
+ClassFileStream* cfs = stream();
+typeArrayHandle nullHandle;
+cfs->guarantee_more(2, CHECK_(nullHandle));  // length
+u2 length = cfs->get_u2_fast();
+// Tuples of shorts [access, name index, sig index, initial value index, byte offset, generic signature index]
+typeArrayOop new_fields = oopFactory::new_permanent_shortArray(length*instanceKlass::next_offset, CHECK_(nullHandle));
+typeArrayHandle fields(THREAD, new_fields);
+int index = 0;
+typeArrayHandle field_annotations;
+for (int n = 0; n < length; n++) {
+cfs->guarantee_more(8, CHECK_(nullHandle));  // access_flags, name_index, descriptor_index, attributes_count
+AccessFlags access_flags;
+jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS;
+verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle));
+access_flags.set_flags(flags);
+u2 name_index = cfs->get_u2_fast();
+int cp_size = cp->length();
+check_property(
+valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(),
+"Invalid constant pool index %u for field name in class file %s",
+name_index, CHECK_(nullHandle));
+symbolHandle name(THREAD, cp->symbol_at(name_index));
+verify_legal_field_name(name, CHECK_(nullHandle));
+u2 signature_index = cfs->get_u2_fast();
+check_property(
+valid_cp_range(signature_index, cp_size) &&
+cp->tag_at(signature_index).is_utf8(),
+"Invalid constant pool index %u for field signature in class file %s",
+signature_index, CHECK_(nullHandle));
+symbolHandle sig(THREAD, cp->symbol_at(signature_index));
+verify_legal_field_signature(name, sig, CHECK_(nullHandle));
+u2 constantvalue_index = 0;
+bool is_synthetic = false;
+u2 generic_signature_index = 0;
+bool is_static = access_flags.is_static();
+u2 attributes_count = cfs->get_u2_fast();
+if (attributes_count > 0) {
+parse_field_attributes(cp, attributes_count, is_static, signature_index,
+&constantvalue_index, &is_synthetic,
+&generic_signature_index, &field_annotations,
+CHECK_(nullHandle));
+if (field_annotations.not_null()) {
+if (fields_annotations->is_null()) {
+objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+*fields_annotations = objArrayHandle(THREAD, md);
+}
+(*fields_annotations)->obj_at_put(n, field_annotations());
+}
+if (is_synthetic) {
+access_flags.set_is_synthetic();
+}
+}
+fields->short_at_put(index++, access_flags.as_short());
+fields->short_at_put(index++, name_index);
+fields->short_at_put(index++, signature_index);
+fields->short_at_put(index++, constantvalue_index);
+// Remember how many oops we encountered and compute allocation type
+BasicType type = cp->basic_type_for_signature_at(signature_index);
+FieldAllocationType atype;
+if ( is_static ) {
+switch ( type ) {
+case  T_BOOLEAN:
+case  T_BYTE:
+fac->static_byte_count++;
+atype = STATIC_BYTE;
+break;
+case  T_LONG:
+case  T_DOUBLE:
+if (Universe::field_type_should_be_aligned(type)) {
+atype = STATIC_ALIGNED_DOUBLE;
+} else {
+atype = STATIC_DOUBLE;
+}
+fac->static_double_count++;
+break;
+case  T_CHAR:
+case  T_SHORT:
+fac->static_short_count++;
+atype = STATIC_SHORT;
+break;
+case  T_FLOAT:
+case  T_INT:
+fac->static_word_count++;
+atype = STATIC_WORD;
+break;
+case  T_ARRAY:
+case  T_OBJECT:
+fac->static_oop_count++;
+atype = STATIC_OOP;
+break;
+case  T_ADDRESS:
+case  T_VOID:
+default:
+assert(0, "bad field type");
+}
+} else {
+switch ( type ) {
+case  T_BOOLEAN:
+case  T_BYTE:
+fac->nonstatic_byte_count++;
+atype = NONSTATIC_BYTE;
+break;
+case  T_LONG:
+case  T_DOUBLE:
+if (Universe::field_type_should_be_aligned(type)) {
+atype = NONSTATIC_ALIGNED_DOUBLE;
+} else {
+atype = NONSTATIC_DOUBLE;
+}
+fac->nonstatic_double_count++;
+break;
+case  T_CHAR:
+case  T_SHORT:
+fac->nonstatic_short_count++;
+atype = NONSTATIC_SHORT;
+break;
+case  T_FLOAT:
+case  T_INT:
+fac->nonstatic_word_count++;
+atype = NONSTATIC_WORD;
+break;
+case  T_ARRAY:
+case  T_OBJECT:
+fac->nonstatic_oop_count++;
+atype = NONSTATIC_OOP;
+break;
+case  T_ADDRESS:
+case  T_VOID:
+default:
+assert(0, "bad field type");
+}
+}
+// The correct offset is computed later (all oop fields will be located together)
+// We temporarily store the allocation type in the offset field
+fields->short_at_put(index++, atype);
+fields->short_at_put(index++, 0);  // Clear out high word of byte offset
+fields->short_at_put(index++, generic_signature_index);
+}
+if (_need_verify && length > 1) {
+// Check duplicated fields
+ResourceMark rm(THREAD);
+NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, NameSigHash*, HASH_ROW_SIZE);
+initialize_hashtable(names_and_sigs);
+bool dup = false;
+{
+debug_only(No_Safepoint_Verifier nsv;)
+for (int i = 0; i < length*instanceKlass::next_offset; i += instanceKlass::next_offset) {
+int name_index = fields->ushort_at(i + instanceKlass::name_index_offset);
+symbolOop name = cp->symbol_at(name_index);
+int sig_index = fields->ushort_at(i + instanceKlass::signature_index_offset);
+symbolOop sig = cp->symbol_at(sig_index);
+// If no duplicates, add name/signature in hashtable names_and_sigs.
+if (!put_after_lookup(name, sig, names_and_sigs)) {
+dup = true;
+break;
+}
+}
+}
+if (dup) {
+classfile_parse_error("Duplicate field name&signature in class file %s",
+CHECK_(nullHandle));
+}
+}
+return fields;
+}
+static void copy_u2_with_conversion(u2* dest, u2* src, int length) {
+while (length-- > 0) {
+*dest++ = Bytes::get_Java_u2((u1*) (src++));
+}
+}
+typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length,
+u4 exception_table_length,
+constantPoolHandle cp,
+TRAPS) {
+ClassFileStream* cfs = stream();
+typeArrayHandle nullHandle;
+// 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index]
+typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle));
+typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh);
+int index = 0;
+cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index
+for (unsigned int i = 0; i < exception_table_length; i++) {
+u2 start_pc = cfs->get_u2_fast();
+u2 end_pc = cfs->get_u2_fast();
+u2 handler_pc = cfs->get_u2_fast();
+u2 catch_type_index = cfs->get_u2_fast();
+// Will check legal target after parsing code array in verifier.
+if (_need_verify) {
+guarantee_property((start_pc < end_pc) && (end_pc <= code_length),
+"Illegal exception table range in class file %s", CHECK_(nullHandle));
+guarantee_property(handler_pc < code_length,
+"Illegal exception table handler in class file %s", CHECK_(nullHandle));
+if (catch_type_index != 0) {
+guarantee_property(valid_cp_range(catch_type_index, cp->length()) &&
+(cp->tag_at(catch_type_index).is_klass() ||
+cp->tag_at(catch_type_index).is_unresolved_klass()),
+"Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle));
+}
+}
+exception_handlers->int_at_put(index++, start_pc);
+exception_handlers->int_at_put(index++, end_pc);
+exception_handlers->int_at_put(index++, handler_pc);
+exception_handlers->int_at_put(index++, catch_type_index);
+}
+return exception_handlers;
+}
+void ClassFileParser::parse_linenumber_table(
+u4 code_attribute_length, u4 code_length,
+CompressedLineNumberWriteStream** write_stream, TRAPS) {
+ClassFileStream* cfs = stream();
+unsigned int num_entries = cfs->get_u2(CHECK);
+// Each entry is a u2 start_pc, and a u2 line_number
+unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2));
+// Verify line number attribute and table length
+check_property(
+code_attribute_length == sizeof(u2) + length_in_bytes,
+"LineNumberTable attribute has wrong length in class file %s", CHECK);
+cfs->guarantee_more(length_in_bytes, CHECK);
+if ((*write_stream) == NULL) {
+if (length_in_bytes > fixed_buffer_size) {
+(*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes);
+} else {
+(*write_stream) = new CompressedLineNumberWriteStream(
+linenumbertable_buffer, fixed_buffer_size);
+}
+}
+while (num_entries-- > 0) {
+u2 bci  = cfs->get_u2_fast(); // start_pc
+u2 line = cfs->get_u2_fast(); // line_number
+guarantee_property(bci < code_length,
+"Invalid pc in LineNumberTable in class file %s", CHECK);
+(*write_stream)->write_pair(bci, line);
+}
+}
+// Class file LocalVariableTable elements.
+class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC {
+public:
+u2 start_bci;
+u2 length;
+u2 name_cp_index;
+u2 descriptor_cp_index;
+u2 slot;
+};
+class LVT_Hash: public CHeapObj {
+public:
+LocalVariableTableElement  *_elem;  // element
+LVT_Hash*                   _next;  // Next entry in hash table
+};
+unsigned int hash(LocalVariableTableElement *elem) {
+unsigned int raw_hash = elem->start_bci;
+raw_hash = elem->length        + raw_hash * 37;
+raw_hash = elem->name_cp_index + raw_hash * 37;
+raw_hash = elem->slot          + raw_hash * 37;
+return raw_hash % HASH_ROW_SIZE;
+}
+void initialize_hashtable(LVT_Hash** table) {
+for (int i = 0; i < HASH_ROW_SIZE; i++) {
+table[i] = NULL;
+}
+}
+void clear_hashtable(LVT_Hash** table) {
+for (int i = 0; i < HASH_ROW_SIZE; i++) {
+LVT_Hash* current = table[i];
+LVT_Hash* next;
+while (current != NULL) {
+next = current->_next;
+current->_next = NULL;
+delete(current);
+current = next;
+}
+table[i] = NULL;
+}
+}
+LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) {
+LVT_Hash* entry = table[index];
+/*
+* 3-tuple start_bci/length/slot has to be unique key,
+* so the following comparison seems to be redundant:
+*       && elem->name_cp_index == entry->_elem->name_cp_index
+*/
+while (entry != NULL) {
+if (elem->start_bci           == entry->_elem->start_bci
+&& elem->length              == entry->_elem->length
+&& elem->name_cp_index       == entry->_elem->name_cp_index
+&& elem->slot                == entry->_elem->slot
+) {
+return entry;
+}
+entry = entry->_next;
+}
+return NULL;
+}
+// Return false if the local variable is found in table.
+// Return true if no duplicate is found.
+// And local variable is added as a new entry in table.
+bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) {
+// First lookup for duplicates
+int index = hash(elem);
+LVT_Hash* entry = LVT_lookup(elem, index, table);
+if (entry != NULL) {
+return false;
+}
+// No duplicate is found, allocate a new entry and fill it.
+if ((entry = new LVT_Hash()) == NULL) {
+return false;
+}
+entry->_elem = elem;
+// Insert into hash table
+entry->_next = table[index];
+table[index] = entry;
+return true;
+}
+void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) {
+lvt->start_bci           = Bytes::get_Java_u2((u1*) &src->start_bci);
+lvt->length              = Bytes::get_Java_u2((u1*) &src->length);
+lvt->name_cp_index       = Bytes::get_Java_u2((u1*) &src->name_cp_index);
+lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index);
+lvt->signature_cp_index  = 0;
+lvt->slot                = Bytes::get_Java_u2((u1*) &src->slot);
+}
+// Function is used to parse both attributes:
+//       LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT)
+u2* ClassFileParser::parse_localvariable_table(u4 code_length,
+u2 max_locals,
+u4 code_attribute_length,
+constantPoolHandle cp,
+u2* localvariable_table_length,
+bool isLVTT,
+TRAPS) {
+ClassFileStream* cfs = stream();
+const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable";
+*localvariable_table_length = cfs->get_u2(CHECK_NULL);
+unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2);
+// Verify local variable table attribute has right length
+if (_need_verify) {
+guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)),
+"%s has wrong length in class file %s", tbl_name, CHECK_NULL);
+}
+u2* localvariable_table_start = cfs->get_u2_buffer();
+assert(localvariable_table_start != NULL, "null local variable table");
+if (!_need_verify) {
+cfs->skip_u2_fast(size);
+} else {
+cfs->guarantee_more(size * 2, CHECK_NULL);
+for(int i = 0; i < (*localvariable_table_length); i++) {
+u2 start_pc = cfs->get_u2_fast();
+u2 length = cfs->get_u2_fast();
+u2 name_index = cfs->get_u2_fast();
+u2 descriptor_index = cfs->get_u2_fast();
+u2 index = cfs->get_u2_fast();
+// Assign to a u4 to avoid overflow
+u4 end_pc = (u4)start_pc + (u4)length;
+if (start_pc >= code_length) {
+classfile_parse_error(
+"Invalid start_pc %u in %s in class file %s",
+start_pc, tbl_name, CHECK_NULL);
+}
+if (end_pc > code_length) {
+classfile_parse_error(
+"Invalid length %u in %s in class file %s",
+length, tbl_name, CHECK_NULL);
+}
+int cp_size = cp->length();
+guarantee_property(
+valid_cp_range(name_index, cp_size) &&
+cp->tag_at(name_index).is_utf8(),
+"Name index %u in %s has bad constant type in class file %s",
+name_index, tbl_name, CHECK_NULL);
+guarantee_property(
+valid_cp_range(descriptor_index, cp_size) &&
+cp->tag_at(descriptor_index).is_utf8(),
+"Signature index %u in %s has bad constant type in class file %s",
+descriptor_index, tbl_name, CHECK_NULL);
+symbolHandle name(THREAD, cp->symbol_at(name_index));
+symbolHandle sig(THREAD, cp->symbol_at(descriptor_index));
+verify_legal_field_name(name, CHECK_NULL);
+u2 extra_slot = 0;
+if (!isLVTT) {
+verify_legal_field_signature(name, sig, CHECK_NULL);
+// 4894874: check special cases for double and long local variables
+if (sig() == vmSymbols::type_signature(T_DOUBLE) ||
+sig() == vmSymbols::type_signature(T_LONG)) {
+extra_slot = 1;
+}
+}
+guarantee_property((index + extra_slot) < max_locals,
+"Invalid index %u in %s in class file %s",
+index, tbl_name, CHECK_NULL);
+}
+}
+return localvariable_table_start;
+}
+void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
+u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) {
+ClassFileStream* cfs = stream();
+u2 index = 0; // index in the array with long/double occupying two slots
+u4 i1 = *u1_index;
+u4 i2 = *u2_index + 1;
+for(int i = 0; i < array_length; i++) {
+u1 tag = u1_array[i1++] = cfs->get_u1(CHECK);
+index++;
+if (tag == ITEM_Long || tag == ITEM_Double) {
+index++;
+} else if (tag == ITEM_Object) {
+u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK);
+guarantee_property(valid_cp_range(class_index, cp->length()) &&
+cp->tag_at(class_index).is_unresolved_klass(),
+"Bad class index %u in StackMap in class file %s",
+class_index, CHECK);
+} else if (tag == ITEM_Uninitialized) {
+u2 offset = u2_array[i2++] = cfs->get_u2(CHECK);
+guarantee_property(
+offset < code_length,
+"Bad uninitialized type offset %u in StackMap in class file %s",
+offset, CHECK);
+} else {
+guarantee_property(
+tag <= (u1)ITEM_Uninitialized,
+"Unknown variable type %u in StackMap in class file %s",
+tag, CHECK);
+}
+}
+u2_array[*u2_index] = index;
+*u1_index = i1;
+*u2_index = i2;
+}
+typeArrayOop ClassFileParser::parse_stackmap_table(
+u4 code_attribute_length, TRAPS) {
+if (code_attribute_length == 0)
+return NULL;
+ClassFileStream* cfs = stream();
+u1* stackmap_table_start = cfs->get_u1_buffer();
+assert(stackmap_table_start != NULL, "null stackmap table");
+// check code_attribute_length first
+stream()->skip_u1(code_attribute_length, CHECK_NULL);
+if (!_need_verify && !DumpSharedSpaces) {
+return NULL;
+}
+typeArrayOop stackmap_data =
+oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL);
+stackmap_data->set_length(code_attribute_length);
+memcpy((void*)stackmap_data->byte_at_addr(0),
+(void*)stackmap_table_start, code_attribute_length);
+return stackmap_data;
+}
+u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length,
+u4 method_attribute_length,
+constantPoolHandle cp, TRAPS) {
+ClassFileStream* cfs = stream();
+cfs->guarantee_more(2, CHECK_NULL);  // checked_exceptions_length
+*checked_exceptions_length = cfs->get_u2_fast();
+unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2);
+u2* checked_exceptions_start = cfs->get_u2_buffer();
+assert(checked_exceptions_start != NULL, "null checked exceptions");
+if (!_need_verify) {
+cfs->skip_u2_fast(size);
+} else {
+// Verify each value in the checked exception table
+u2 checked_exception;
+u2 len = *checked_exceptions_length;
+cfs->guarantee_more(2 * len, CHECK_NULL);
+for (int i = 0; i < len; i++) {
+checked_exception = cfs->get_u2_fast();
+check_property(
+valid_cp_range(checked_exception, cp->length()) &&
+cp->tag_at(checked_exception).is_klass_reference(),
+"Exception name has bad type at constant pool %u in class file %s",
+checked_exception, CHECK_NULL);
+}
+}
+// check exceptions attribute length
+if (_need_verify) {
+guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) +
+sizeof(u2) * size),
+"Exceptions attribute has wrong length in class file %s", CHECK_NULL);
+}
+return checked_exceptions_start;
+}
+#define MAX_ARGS_SIZE 255
+#define MAX_CODE_SIZE 65535
+#define INITIAL_MAX_LVT_NUMBER 256
+// Note: the parse_method below is big and clunky because all parsing of the code and exceptions
+// attribute is inlined. This is curbersome to avoid since we inline most of the parts in the
+// methodOop to save footprint, so we only know the size of the resulting methodOop when the
+// entire method attribute is parsed.
+//
+// The promoted_flags parameter is used to pass relevant access_flags
+// from the method back up to the containing klass. These flag values
+// are added to klass's access_flags.
+methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface,
+AccessFlags *promoted_flags,
+typeArrayHandle* method_annotations,
+typeArrayHandle* method_parameter_annotations,
+typeArrayHandle* method_default_annotations,
+TRAPS) {
+ClassFileStream* cfs = stream();
+methodHandle nullHandle;
+ResourceMark rm(THREAD);
+// Parse fixed parts
+cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count
+int flags = cfs->get_u2_fast();
+u2 name_index = cfs->get_u2_fast();
+int cp_size = cp->length();
+check_property(
+valid_cp_range(name_index, cp_size) &&
+cp->tag_at(name_index).is_utf8(),
+"Illegal constant pool index %u for method name in class file %s",
+name_index, CHECK_(nullHandle));
+symbolHandle name(THREAD, cp->symbol_at(name_index));
+verify_legal_method_name(name, CHECK_(nullHandle));
+u2 signature_index = cfs->get_u2_fast();
+guarantee_property(
+valid_cp_range(signature_index, cp_size) &&
+cp->tag_at(signature_index).is_utf8(),
+"Illegal constant pool index %u for method signature in class file %s",
+signature_index, CHECK_(nullHandle));
+symbolHandle signature(THREAD, cp->symbol_at(signature_index));
+AccessFlags access_flags;
+if (name == vmSymbols::class_initializer_name()) {
+// We ignore the access flags for a class initializer. (JVM Spec. p. 116)
+flags = JVM_ACC_STATIC;
+} else {
+verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle));
+}
+int args_size = -1;  // only used when _need_verify is true
+if (_need_verify) {
+args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) +
+verify_legal_method_signature(name, signature, CHECK_(nullHandle));
+if (args_size > MAX_ARGS_SIZE) {
+classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle));
+}
+}
+access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS);
+// Default values for code and exceptions attribute elements
+u2 max_stack = 0;
+u2 max_locals = 0;
+u4 code_length = 0;
+u1* code_start = 0;
+u2 exception_table_length = 0;
+typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array());
+u2 checked_exceptions_length = 0;
+u2* checked_exceptions_start = NULL;
+CompressedLineNumberWriteStream* linenumber_table = NULL;
+int linenumber_table_length = 0;
+int total_lvt_length = 0;
+u2 lvt_cnt = 0;
+u2 lvtt_cnt = 0;
+bool lvt_allocated = false;
+u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER;
+u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER;
+u2* localvariable_table_length;
+u2** localvariable_table_start;
+u2* localvariable_type_table_length;
+u2** localvariable_type_table_start;
+bool parsed_code_attribute = false;
+bool parsed_checked_exceptions_attribute = false;
+bool parsed_stackmap_attribute = false;
+// stackmap attribute - JDK1.5
+typeArrayHandle stackmap_data;
+u2 generic_signature_index = 0;
+u1* runtime_visible_annotations = NULL;
+int runtime_visible_annotations_length = 0;
+u1* runtime_invisible_annotations = NULL;
+int runtime_invisible_annotations_length = 0;
+u1* runtime_visible_parameter_annotations = NULL;
+int runtime_visible_parameter_annotations_length = 0;
+u1* runtime_invisible_parameter_annotations = NULL;
+int runtime_invisible_parameter_annotations_length = 0;
+u1* annotation_default = NULL;
+int annotation_default_length = 0;
+// Parse code and exceptions attribute
+u2 method_attributes_count = cfs->get_u2_fast();
+while (method_attributes_count--) {
+cfs->guarantee_more(6, CHECK_(nullHandle));  // method_attribute_name_index, method_attribute_length
+u2 method_attribute_name_index = cfs->get_u2_fast();
+u4 method_attribute_length = cfs->get_u4_fast();
+check_property(
+valid_cp_range(method_attribute_name_index, cp_size) &&
+cp->tag_at(method_attribute_name_index).is_utf8(),
+"Invalid method attribute name index %u in class file %s",
+method_attribute_name_index, CHECK_(nullHandle));
+symbolOop method_attribute_name = cp->symbol_at(method_attribute_name_index);
+if (method_attribute_name == vmSymbols::tag_code()) {
+// Parse Code attribute
+if (_need_verify) {
+guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(),
+"Code attribute in native or abstract methods in class file %s",
+CHECK_(nullHandle));
+}
+if (parsed_code_attribute) {
+classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle));
+}
+parsed_code_attribute = true;
+// Stack size, locals size, and code size
+if (_major_version == 45 && _minor_version <= 2) {
+cfs->guarantee_more(4, CHECK_(nullHandle));
+max_stack = cfs->get_u1_fast();
+max_locals = cfs->get_u1_fast();
+code_length = cfs->get_u2_fast();
+} else {
+cfs->guarantee_more(8, CHECK_(nullHandle));
+max_stack = cfs->get_u2_fast();
+max_locals = cfs->get_u2_fast();
+code_length = cfs->get_u4_fast();
+}
+if (_need_verify) {
+guarantee_property(args_size <= max_locals,
+"Arguments can't fit into locals in class file %s", CHECK_(nullHandle));
+guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE,
+"Invalid method Code length %u in class file %s",
+code_length, CHECK_(nullHandle));
+}
+// Code pointer
+code_start = cfs->get_u1_buffer();
+assert(code_start != NULL, "null code start");
+cfs->guarantee_more(code_length, CHECK_(nullHandle));
+cfs->skip_u1_fast(code_length);
+// Exception handler table
+cfs->guarantee_more(2, CHECK_(nullHandle));  // exception_table_length
+exception_table_length = cfs->get_u2_fast();
+if (exception_table_length > 0) {
+exception_handlers =
+parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle));
+}
+// Parse additional attributes in code attribute
+cfs->guarantee_more(2, CHECK_(nullHandle));  // code_attributes_count
+u2 code_attributes_count = cfs->get_u2_fast();
+unsigned int calculated_attribute_length = sizeof(max_stack) +
+sizeof(max_locals) +
+sizeof(code_length) +
+code_length +
+sizeof(exception_table_length) +
+sizeof(code_attributes_count) +
+exception_table_length*(sizeof(u2) /* start_pc */+
+sizeof(u2) /* end_pc */  +
+sizeof(u2) /* handler_pc */ +
+sizeof(u2) /* catch_type_index */);
+while (code_attributes_count--) {
+cfs->guarantee_more(6, CHECK_(nullHandle));  // code_attribute_name_index, code_attribute_length
+u2 code_attribute_name_index = cfs->get_u2_fast();
+u4 code_attribute_length = cfs->get_u4_fast();
+calculated_attribute_length += code_attribute_length +
+sizeof(code_attribute_name_index) +
+sizeof(code_attribute_length);
+check_property(valid_cp_range(code_attribute_name_index, cp_size) &&
+cp->tag_at(code_attribute_name_index).is_utf8(),
+"Invalid code attribute name index %u in class file %s",
+code_attribute_name_index,
+CHECK_(nullHandle));
+if (LoadLineNumberTables &&
+cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) {
+// Parse and compress line number table
+parse_linenumber_table(code_attribute_length, code_length,
+&linenumber_table, CHECK_(nullHandle));
+} else if (LoadLocalVariableTables &&
+cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) {
+// Parse local variable table
+if (!lvt_allocated) {
+localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  INITIAL_MAX_LVT_NUMBER);
+localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
+localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  INITIAL_MAX_LVT_NUMBER);
+localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
+lvt_allocated = true;
+}
+if (lvt_cnt == max_lvt_cnt) {
+max_lvt_cnt <<= 1;
+REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt);
+REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt);
+}
+localvariable_table_start[lvt_cnt] =
+parse_localvariable_table(code_length,
+max_locals,
+code_attribute_length,
+cp,
+&localvariable_table_length[lvt_cnt],
+false,    // is not LVTT
+CHECK_(nullHandle));
+total_lvt_length += localvariable_table_length[lvt_cnt];
+lvt_cnt++;
+} else if (LoadLocalVariableTypeTables &&
+_major_version >= JAVA_1_5_VERSION &&
+cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) {
+if (!lvt_allocated) {
+localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  INITIAL_MAX_LVT_NUMBER);
+localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
+localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  INITIAL_MAX_LVT_NUMBER);
+localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
+lvt_allocated = true;
+}
+// Parse local variable type table
+if (lvtt_cnt == max_lvtt_cnt) {
+max_lvtt_cnt <<= 1;
+REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt);
+REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt);
+}
+localvariable_type_table_start[lvtt_cnt] =
+parse_localvariable_table(code_length,
+max_locals,
+code_attribute_length,
+cp,
+&localvariable_type_table_length[lvtt_cnt],
+true,     // is LVTT
+CHECK_(nullHandle));
+lvtt_cnt++;
+} else if (UseSplitVerifier &&
+_major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION &&
+cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) {
+// Stack map is only needed by the new verifier in JDK1.5.
+if (parsed_stackmap_attribute) {
+classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle));
+}
+typeArrayOop sm =
+parse_stackmap_table(code_attribute_length, CHECK_(nullHandle));
+stackmap_data = typeArrayHandle(THREAD, sm);
+parsed_stackmap_attribute = true;
+} else {
+// Skip unknown attributes
+cfs->skip_u1(code_attribute_length, CHECK_(nullHandle));
+}
+}
+// check method attribute length
+if (_need_verify) {
+guarantee_property(method_attribute_length == calculated_attribute_length,
+"Code segment has wrong length in class file %s", CHECK_(nullHandle));
+}
+} else if (method_attribute_name == vmSymbols::tag_exceptions()) {
+// Parse Exceptions attribute
+if (parsed_checked_exceptions_attribute) {
+classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle));
+}
+parsed_checked_exceptions_attribute = true;
+checked_exceptions_start =
+parse_checked_exceptions(&checked_exceptions_length,
+method_attribute_length,
+cp, CHECK_(nullHandle));
+} else if (method_attribute_name == vmSymbols::tag_synthetic()) {
+if (method_attribute_length != 0) {
+classfile_parse_error(
+"Invalid Synthetic method attribute length %u in class file %s",
+method_attribute_length, CHECK_(nullHandle));
+}
+// Should we check that there hasn't already been a synthetic attribute?
+access_flags.set_is_synthetic();
+} else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120
+if (method_attribute_length != 0) {
+classfile_parse_error(
+"Invalid Deprecated method attribute length %u in class file %s",
+method_attribute_length, CHECK_(nullHandle));
+}
+} else if (_major_version >= JAVA_1_5_VERSION) {
+if (method_attribute_name == vmSymbols::tag_signature()) {
+if (method_attribute_length != 2) {
+classfile_parse_error(
+"Invalid Signature attribute length %u in class file %s",
+method_attribute_length, CHECK_(nullHandle));
+}
+cfs->guarantee_more(2, CHECK_(nullHandle));  // generic_signature_index
+generic_signature_index = cfs->get_u2_fast();
+} else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
+runtime_visible_annotations_length = method_attribute_length;
+runtime_visible_annotations = cfs->get_u1_buffer();
+assert(runtime_visible_annotations != NULL, "null visible annotations");
+cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle));
+} else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
+runtime_invisible_annotations_length = method_attribute_length;
+runtime_invisible_annotations = cfs->get_u1_buffer();
+assert(runtime_invisible_annotations != NULL, "null invisible annotations");
+cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle));
+} else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) {
+runtime_visible_parameter_annotations_length = method_attribute_length;
+runtime_visible_parameter_annotations = cfs->get_u1_buffer();
+assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations");
+cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle));
+} else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) {
+runtime_invisible_parameter_annotations_length = method_attribute_length;
+runtime_invisible_parameter_annotations = cfs->get_u1_buffer();
+assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations");
+cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle));
+} else if (method_attribute_name == vmSymbols::tag_annotation_default()) {
+annotation_default_length = method_attribute_length;
+annotation_default = cfs->get_u1_buffer();
+assert(annotation_default != NULL, "null annotation default");
+cfs->skip_u1(annotation_default_length, CHECK_(nullHandle));
+} else {
+// Skip unknown attributes
+cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
+}
+} else {
+// Skip unknown attributes
+cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
+}
+}
+if (linenumber_table != NULL) {
+linenumber_table->write_terminator();
+linenumber_table_length = linenumber_table->position();
+}
+// Make sure there's at least one Code attribute in non-native/non-abstract method
+if (_need_verify) {
+guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute,
+"Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle));
+}
+// All sizing information for a methodOop is finally available, now create it
+methodOop m_oop  = oopFactory::new_method(
+code_length, access_flags, linenumber_table_length,
+total_lvt_length, checked_exceptions_length, CHECK_(nullHandle));
+methodHandle m (THREAD, m_oop);
+ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize);
+// Fill in information from fixed part (access_flags already set)
+m->set_constants(cp());
+m->set_name_index(name_index);
+m->set_signature_index(signature_index);
+m->set_generic_signature_index(generic_signature_index);
+#ifdef CC_INTERP
+// hmm is there a gc issue here??
+ResultTypeFinder rtf(cp->symbol_at(signature_index));
+m->set_result_index(rtf.type());
+#endif
+if (args_size >= 0) {
+m->set_size_of_parameters(args_size);
+} else {
+m->compute_size_of_parameters(THREAD);
+}
+#ifdef ASSERT
+if (args_size >= 0) {
+m->compute_size_of_parameters(THREAD);
+assert(args_size == m->size_of_parameters(), "");
+}
+#endif
+// Fill in code attribute information
+m->set_max_stack(max_stack);
+m->set_max_locals(max_locals);
+m->constMethod()->set_stackmap_data(stackmap_data());
+/**
+* The exception_table field is the flag used to indicate
+* that the methodOop and it's associated constMethodOop are partially
+* initialized and thus are exempt from pre/post GC verification.  Once
+* the field is set, the oops are considered fully initialized so make
+* sure that the oops can pass verification when this field is set.
+*/
+m->set_exception_table(exception_handlers());
+// Copy byte codes
+if (code_length > 0) {
+memcpy(m->code_base(), code_start, code_length);
+}
+// Copy line number table
+if (linenumber_table != NULL) {
+memcpy(m->compressed_linenumber_table(),
+linenumber_table->buffer(), linenumber_table_length);
+}
+// Copy checked exceptions
+if (checked_exceptions_length > 0) {
+int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2);
+copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size);
+}
+/* Copy class file LVT's/LVTT's into the HotSpot internal LVT.
+*
+* Rules for LVT's and LVTT's are:
+*   - There can be any number of LVT's and LVTT's.
+*   - If there are n LVT's, it is the same as if there was just
+*     one LVT containing all the entries from the n LVT's.
+*   - There may be no more than one LVT entry per local variable.
+*     Two LVT entries are 'equal' if these fields are the same:
+*        start_pc, length, name, slot
+*   - There may be no more than one LVTT entry per each LVT entry.
+*     Each LVTT entry has to match some LVT entry.
+*   - HotSpot internal LVT keeps natural ordering of class file LVT entries.
+*/
+if (total_lvt_length > 0) {
+int tbl_no, idx;
+promoted_flags->set_has_localvariable_table();
+LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE);
+initialize_hashtable(lvt_Hash);
+// To fill LocalVariableTable in
+Classfile_LVT_Element*  cf_lvt;
+LocalVariableTableElement* lvt = m->localvariable_table_start();
+for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) {
+cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no];
+for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) {
+copy_lvt_element(&cf_lvt[idx], lvt);
+// If no duplicates, add LVT elem in hashtable lvt_Hash.
+if (LVT_put_after_lookup(lvt, lvt_Hash) == false
+&& _need_verify
+&& _major_version >= JAVA_1_5_VERSION ) {
+clear_hashtable(lvt_Hash);
+classfile_parse_error("Duplicated LocalVariableTable attribute "
+"entry for '%s' in class file %s",
+cp->symbol_at(lvt->name_cp_index)->as_utf8(),
+CHECK_(nullHandle));
+}
+}
+}
+// To merge LocalVariableTable and LocalVariableTypeTable
+Classfile_LVT_Element* cf_lvtt;
+LocalVariableTableElement lvtt_elem;
+for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) {
+cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no];
+for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) {
+copy_lvt_element(&cf_lvtt[idx], &lvtt_elem);
+int index = hash(&lvtt_elem);
+LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash);
+if (entry == NULL) {
+if (_need_verify) {
+clear_hashtable(lvt_Hash);
+classfile_parse_error("LVTT entry for '%s' in class file %s "
+"does not match any LVT entry",
+cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
+CHECK_(nullHandle));
+}
+} else if (entry->_elem->signature_cp_index != 0 && _need_verify) {
+clear_hashtable(lvt_Hash);
+classfile_parse_error("Duplicated LocalVariableTypeTable attribute "
+"entry for '%s' in class file %s",
+cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
+CHECK_(nullHandle));
+} else {
+// to add generic signatures into LocalVariableTable
+entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index;
+}
+}
+}
+clear_hashtable(lvt_Hash);
+}
+*method_annotations = assemble_annotations(runtime_visible_annotations,
+runtime_visible_annotations_length,
+runtime_invisible_annotations,
+runtime_invisible_annotations_length,
+CHECK_(nullHandle));
+*method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations,
+runtime_visible_parameter_annotations_length,
+runtime_invisible_parameter_annotations,
+runtime_invisible_parameter_annotations_length,
+CHECK_(nullHandle));
+*method_default_annotations = assemble_annotations(annotation_default,
+annotation_default_length,
+NULL,
+0,
+CHECK_(nullHandle));
+if (name() == vmSymbols::finalize_method_name() &&
+signature() == vmSymbols::void_method_signature()) {
+if (m->is_empty_method()) {
+_has_empty_finalizer = true;
+} else {
+_has_finalizer = true;
+}
+}
+if (name() == vmSymbols::object_initializer_name() &&
+signature() == vmSymbols::void_method_signature() &&
+m->is_vanilla_constructor()) {
+_has_vanilla_constructor = true;
+}
+return m;
+}
+// The promoted_flags parameter is used to pass relevant access_flags
+// from the methods back up to the containing klass. These flag values
+// are added to klass's access_flags.
+objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface,
+AccessFlags* promoted_flags,
+bool* has_final_method,
+objArrayOop* methods_annotations_oop,
+objArrayOop* methods_parameter_annotations_oop,
+objArrayOop* methods_default_annotations_oop,
+TRAPS) {
+ClassFileStream* cfs = stream();
+objArrayHandle nullHandle;
+typeArrayHandle method_annotations;
+typeArrayHandle method_parameter_annotations;
+typeArrayHandle method_default_annotations;
+cfs->guarantee_more(2, CHECK_(nullHandle));  // length
+u2 length = cfs->get_u2_fast();
+if (length == 0) {
+return objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
+} else {
+objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+objArrayHandle methods(THREAD, m);
+HandleMark hm(THREAD);
+objArrayHandle methods_annotations;
+objArrayHandle methods_parameter_annotations;
+objArrayHandle methods_default_annotations;
+for (int index = 0; index < length; index++) {
+methodHandle method = parse_method(cp, is_interface,
+promoted_flags,
+&method_annotations,
+&method_parameter_annotations,
+&method_default_annotations,
+CHECK_(nullHandle));
+if (method->is_final()) {
+*has_final_method = true;
+}
+methods->obj_at_put(index, method());
+if (method_annotations.not_null()) {
+if (methods_annotations.is_null()) {
+objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+methods_annotations = objArrayHandle(THREAD, md);
+}
+methods_annotations->obj_at_put(index, method_annotations());
+}
+if (method_parameter_annotations.not_null()) {
+if (methods_parameter_annotations.is_null()) {
+objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+methods_parameter_annotations = objArrayHandle(THREAD, md);
+}
+methods_parameter_annotations->obj_at_put(index, method_parameter_annotations());
+}
+if (method_default_annotations.not_null()) {
+if (methods_default_annotations.is_null()) {
+objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
+methods_default_annotations = objArrayHandle(THREAD, md);
+}
+methods_default_annotations->obj_at_put(index, method_default_annotations());
+}
+}
+if (_need_verify && length > 1) {
+// Check duplicated methods
+ResourceMark rm(THREAD);
+NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, NameSigHash*, HASH_ROW_SIZE);
+initialize_hashtable(names_and_sigs);
+bool dup = false;
+{
+debug_only(No_Safepoint_Verifier nsv;)
+for (int i = 0; i < length; i++) {
+methodOop m = (methodOop)methods->obj_at(i);
+// If no duplicates, add name/signature in hashtable names_and_sigs.
+if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) {
+dup = true;
+break;
+}
+}
+}
+if (dup) {
+classfile_parse_error("Duplicate method name&signature in class file %s",
+CHECK_(nullHandle));
+}
+}
+*methods_annotations_oop = methods_annotations();
+*methods_parameter_annotations_oop = methods_parameter_annotations();
+*methods_default_annotations_oop = methods_default_annotations();
+return methods;
+}
+}
+typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods,
+objArrayHandle methods_annotations,
+objArrayHandle methods_parameter_annotations,
+objArrayHandle methods_default_annotations,
+TRAPS) {
+typeArrayHandle nullHandle;
+int length = methods()->length();
+// If JVMTI original method ordering is enabled we have to
+// remember the original class file ordering.
+// We temporarily use the vtable_index field in the methodOop to store the
+// class file index, so we can read in after calling qsort.
+if (JvmtiExport::can_maintain_original_method_order()) {
+for (int index = 0; index < length; index++) {
+methodOop m = methodOop(methods->obj_at(index));
+assert(!m->valid_vtable_index(), "vtable index should not be set");
+m->set_vtable_index(index);
+}
+}
+// Sort method array by ascending method name (for faster lookups & vtable construction)
+// Note that the ordering is not alphabetical, see symbolOopDesc::fast_compare
+methodOopDesc::sort_methods(methods(),
+methods_annotations(),
+methods_parameter_annotations(),
+methods_default_annotations());
+// If JVMTI original method ordering is enabled construct int array remembering the original ordering
+if (JvmtiExport::can_maintain_original_method_order()) {
+typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle));
+typeArrayHandle method_ordering(THREAD, new_ordering);
+for (int index = 0; index < length; index++) {
+methodOop m = methodOop(methods->obj_at(index));
+int old_index = m->vtable_index();
+assert(old_index >= 0 && old_index < length, "invalid method index");
+method_ordering->int_at_put(index, old_index);
+m->set_vtable_index(methodOopDesc::invalid_vtable_index);
+}
+return method_ordering;
+} else {
+return typeArrayHandle(THREAD, Universe::the_empty_int_array());
+}
+}
+void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
+ClassFileStream* cfs = stream();
+cfs->guarantee_more(2, CHECK);  // sourcefile_index
+u2 sourcefile_index = cfs->get_u2_fast();
+check_property(
+valid_cp_range(sourcefile_index, cp->length()) &&
+cp->tag_at(sourcefile_index).is_utf8(),
+"Invalid SourceFile attribute at constant pool index %u in class file %s",
+sourcefile_index, CHECK);
+k->set_source_file_name(cp->symbol_at(sourcefile_index));
+}
+void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
+instanceKlassHandle k,
+int length, TRAPS) {
+ClassFileStream* cfs = stream();
+u1* sde_buffer = cfs->get_u1_buffer();
+assert(sde_buffer != NULL, "null sde buffer");
+// Don't bother storing it if there is no way to retrieve it
+if (JvmtiExport::can_get_source_debug_extension()) {
+// Optimistically assume that only 1 byte UTF format is used
+// (common case)
+symbolOop sde_symbol = oopFactory::new_symbol((char*)sde_buffer,
+length, CHECK);
+k->set_source_debug_extension(sde_symbol);
+}
+// Got utf8 string, set stream position forward
+cfs->skip_u1(length, CHECK);
+}
+// Inner classes can be static, private or protected (classic VM does this)
+#define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC)
+// Return number of classes in the inner classes attribute table
+u2 ClassFileParser::parse_classfile_inner_classes_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
+ClassFileStream* cfs = stream();
+cfs->guarantee_more(2, CHECK_0);  // length
+u2 length = cfs->get_u2_fast();
+// 4-tuples of shorts [inner_class_info_index, outer_class_info_index, inner_name_index, inner_class_access_flags]
+typeArrayOop ic = oopFactory::new_permanent_shortArray(length*4, CHECK_0);
+typeArrayHandle inner_classes(THREAD, ic);
+int index = 0;
+int cp_size = cp->length();
+cfs->guarantee_more(8 * length, CHECK_0);  // 4-tuples of u2
+for (int n = 0; n < length; n++) {
+// Inner class index
+u2 inner_class_info_index = cfs->get_u2_fast();
+check_property(
+inner_class_info_index == 0 ||
+(valid_cp_range(inner_class_info_index, cp_size) &&
+cp->tag_at(inner_class_info_index).is_klass_reference()),
+"inner_class_info_index %u has bad constant type in class file %s",
+inner_class_info_index, CHECK_0);
+// Outer class index
+u2 outer_class_info_index = cfs->get_u2_fast();
+check_property(
+outer_class_info_index == 0 ||
+(valid_cp_range(outer_class_info_index, cp_size) &&
+cp->tag_at(outer_class_info_index).is_klass_reference()),
+"outer_class_info_index %u has bad constant type in class file %s",
+outer_class_info_index, CHECK_0);
+// Inner class name
+u2 inner_name_index = cfs->get_u2_fast();
+check_property(
+inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) &&
+cp->tag_at(inner_name_index).is_utf8()),
+"inner_name_index %u has bad constant type in class file %s",
+inner_name_index, CHECK_0);
+if (_need_verify) {
+guarantee_property(inner_class_info_index != outer_class_info_index,
+"Class is both outer and inner class in class file %s", CHECK_0);
+}
+// Access flags
+AccessFlags inner_access_flags;
+jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS;
+if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
+// Set abstract bit for old class files for backward compatibility
+flags |= JVM_ACC_ABSTRACT;
+}
+verify_legal_class_modifiers(flags, CHECK_0);
+inner_access_flags.set_flags(flags);
+inner_classes->short_at_put(index++, inner_class_info_index);
+inner_classes->short_at_put(index++, outer_class_info_index);
+inner_classes->short_at_put(index++, inner_name_index);
+inner_classes->short_at_put(index++, inner_access_flags.as_short());
+}
+// 4347400: make sure there's no duplicate entry in the classes array
+if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
+for(int i = 0; i < inner_classes->length(); i += 4) {
+for(int j = i + 4; j < inner_classes->length(); j += 4) {
+guarantee_property((inner_classes->ushort_at(i)   != inner_classes->ushort_at(j) ||
+inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) ||
+inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) ||
+inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)),
+"Duplicate entry in InnerClasses in class file %s",
+CHECK_0);
+}
+}
+}
+// Update instanceKlass with inner class info.
+k->set_inner_classes(inner_classes());
+return length;
+}
+void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
+k->set_is_synthetic();
+}
+void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
+ClassFileStream* cfs = stream();
+u2 signature_index = cfs->get_u2(CHECK);
+check_property(
+valid_cp_range(signature_index, cp->length()) &&
+cp->tag_at(signature_index).is_utf8(),
+"Invalid constant pool index %u in Signature attribute in class file %s",
+signature_index, CHECK);
+k->set_generic_signature(cp->symbol_at(signature_index));
+}
+void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
+ClassFileStream* cfs = stream();
+// Set inner classes attribute to default sentinel
+k->set_inner_classes(Universe::the_empty_short_array());
+cfs->guarantee_more(2, CHECK);  // attributes_count
+u2 attributes_count = cfs->get_u2_fast();
+bool parsed_sourcefile_attribute = false;
+bool parsed_innerclasses_attribute = false;
+bool parsed_enclosingmethod_attribute = false;
+u1* runtime_visible_annotations = NULL;
+int runtime_visible_annotations_length = 0;
+u1* runtime_invisible_annotations = NULL;
+int runtime_invisible_annotations_length = 0;
+// Iterate over attributes
+while (attributes_count--) {
+cfs->guarantee_more(6, CHECK);  // attribute_name_index, attribute_length
+u2 attribute_name_index = cfs->get_u2_fast();
+u4 attribute_length = cfs->get_u4_fast();
+check_property(
+valid_cp_range(attribute_name_index, cp->length()) &&
+cp->tag_at(attribute_name_index).is_utf8(),
+"Attribute name has bad constant pool index %u in class file %s",
+attribute_name_index, CHECK);
+symbolOop tag = cp->symbol_at(attribute_name_index);
+if (tag == vmSymbols::tag_source_file()) {
+// Check for SourceFile tag
+if (_need_verify) {
+guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK);
+}
+if (parsed_sourcefile_attribute) {
+classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK);
+} else {
+parsed_sourcefile_attribute = true;
+}
+parse_classfile_sourcefile_attribute(cp, k, CHECK);
+} else if (tag == vmSymbols::tag_source_debug_extension()) {
+// Check for SourceDebugExtension tag
+parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK);
+} else if (tag == vmSymbols::tag_inner_classes()) {
+// Check for InnerClasses tag
+if (parsed_innerclasses_attribute) {
+classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK);
+} else {
+parsed_innerclasses_attribute = true;
+}
+u2 num_of_classes = parse_classfile_inner_classes_attribute(cp, k, CHECK);
+if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
+guarantee_property(attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes,
+"Wrong InnerClasses attribute length in class file %s", CHECK);
+}
+} else if (tag == vmSymbols::tag_synthetic()) {
+// Check for Synthetic tag
+// Shouldn't we check that the synthetic flags wasn't already set? - not required in spec
+if (attribute_length != 0) {
+classfile_parse_error(
+"Invalid Synthetic classfile attribute length %u in class file %s",
+attribute_length, CHECK);
+}
+parse_classfile_synthetic_attribute(cp, k, CHECK);
+} else if (tag == vmSymbols::tag_deprecated()) {
+// Check for Deprecatd tag - 4276120
+if (attribute_length != 0) {
+classfile_parse_error(
+"Invalid Deprecated classfile attribute length %u in class file %s",
+attribute_length, CHECK);
+}
+} else if (_major_version >= JAVA_1_5_VERSION) {
+if (tag == vmSymbols::tag_signature()) {
+if (attribute_length != 2) {
+classfile_parse_error(
+"Wrong Signature attribute length %u in class file %s",
+attribute_length, CHECK);
+}
+parse_classfile_signature_attribute(cp, k, CHECK);
+} else if (tag == vmSymbols::tag_runtime_visible_annotations()) {
+runtime_visible_annotations_length = attribute_length;
+runtime_visible_annotations = cfs->get_u1_buffer();
+assert(runtime_visible_annotations != NULL, "null visible annotations");
+cfs->skip_u1(runtime_visible_annotations_length, CHECK);
+} else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) {
+runtime_invisible_annotations_length = attribute_length;
+runtime_invisible_annotations = cfs->get_u1_buffer();
+assert(runtime_invisible_annotations != NULL, "null invisible annotations");
+cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
+} else if (tag == vmSymbols::tag_enclosing_method()) {
+if (parsed_enclosingmethod_attribute) {
+classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK);
+}   else {
+parsed_enclosingmethod_attribute = true;
+}
+cfs->guarantee_more(4, CHECK);  // class_index, method_index
+u2 class_index  = cfs->get_u2_fast();
+u2 method_index = cfs->get_u2_fast();
+if (class_index == 0) {
+classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK);
+}
+// Validate the constant pool indices and types
+if (!cp->is_within_bounds(class_index) ||
+!cp->tag_at(class_index).is_klass_reference()) {
+classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK);
+}
+if (method_index != 0 &&
+(!cp->is_within_bounds(method_index) ||
+!cp->tag_at(method_index).is_name_and_type())) {
+classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK);
+}
+k->set_enclosing_method_indices(class_index, method_index);
+} else {
+// Unknown attribute
+cfs->skip_u1(attribute_length, CHECK);
+}
+} else {
+// Unknown attribute
+cfs->skip_u1(attribute_length, CHECK);
+}
+}
+typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations,
+runtime_visible_annotations_length,
+runtime_invisible_annotations,
+runtime_invisible_annotations_length,
+CHECK);
+k->set_class_annotations(annotations());
+}
+typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations,
+int runtime_visible_annotations_length,
+u1* runtime_invisible_annotations,
+int runtime_invisible_annotations_length, TRAPS) {
+typeArrayHandle annotations;
+if (runtime_visible_annotations != NULL ||
+runtime_invisible_annotations != NULL) {
+typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length +
+runtime_invisible_annotations_length, CHECK_(annotations));
+annotations = typeArrayHandle(THREAD, anno);
+if (runtime_visible_annotations != NULL) {
+memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length);
+}
+if (runtime_invisible_annotations != NULL) {
+memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length);
+}
+}
+return annotations;
+}
+static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
+KlassHandle h_k (THREAD, fd->field_holder());
+assert(h_k.not_null() && fd->is_static(), "just checking");
+if (fd->has_initial_value()) {
+BasicType t = fd->field_type();
+switch (t) {
+case T_BYTE:
+h_k()->byte_field_put(fd->offset(), fd->int_initial_value());
+break;
+case T_BOOLEAN:
+h_k()->bool_field_put(fd->offset(), fd->int_initial_value());
+break;
+case T_CHAR:
+h_k()->char_field_put(fd->offset(), fd->int_initial_value());
+break;
+case T_SHORT:
+h_k()->short_field_put(fd->offset(), fd->int_initial_value());
+break;
+case T_INT:
+h_k()->int_field_put(fd->offset(), fd->int_initial_value());
+break;
+case T_FLOAT:
+h_k()->float_field_put(fd->offset(), fd->float_initial_value());
+break;
+case T_DOUBLE:
+h_k()->double_field_put(fd->offset(), fd->double_initial_value());
+break;
+case T_LONG:
+h_k()->long_field_put(fd->offset(), fd->long_initial_value());
+break;
+case T_OBJECT:
+{
+#ifdef ASSERT
+symbolOop sym = oopFactory::new_symbol("Ljava/lang/String;", CHECK);
+assert(fd->signature() == sym, "just checking");
+#endif
+oop string = fd->string_initial_value(CHECK);
+h_k()->obj_field_put(fd->offset(), string);
+}
+break;
+default:
+THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
+"Illegal ConstantValue attribute in class file");
+}
+}
+}
+void ClassFileParser::java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
+constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS) {
+// This code is for compatibility with earlier jdk's that do not
+// have the "discovered" field in java.lang.ref.Reference.  For 1.5
+// the check for the "discovered" field should issue a warning if
+// the field is not found.  For 1.6 this code should be issue a
+// fatal error if the "discovered" field is not found.
+//
+// Increment fac.nonstatic_oop_count so that the start of the
+// next type of non-static oops leaves room for the fake oop.
+// Do not increment next_nonstatic_oop_offset so that the
+// fake oop is place after the java.lang.ref.Reference oop
+// fields.
+//
+// Check the fields in java.lang.ref.Reference for the "discovered"
+// field.  If it is not present, artifically create a field for it.
+// This allows this VM to run on early JDK where the field is not
+// present.
+//
+// Increment fac.nonstatic_oop_count so that the start of the
+// next type of non-static oops leaves room for the fake oop.
+// Do not increment next_nonstatic_oop_offset so that the
+// fake oop is place after the java.lang.ref.Reference oop
+// fields.
+//
+// Check the fields in java.lang.ref.Reference for the "discovered"
+// field.  If it is not present, artifically create a field for it.
+// This allows this VM to run on early JDK where the field is not
+// present.
+int reference_sig_index = 0;
+int reference_name_index = 0;
+int reference_index = 0;
+int extra = java_lang_ref_Reference::number_of_fake_oop_fields;
+const int n = (*fields_ptr)()->length();
+for (int i = 0; i < n; i += instanceKlass::next_offset ) {
+int name_index =
+(*fields_ptr)()->ushort_at(i + instanceKlass::name_index_offset);
+int sig_index  =
+(*fields_ptr)()->ushort_at(i + instanceKlass::signature_index_offset);
+symbolOop f_name = cp->symbol_at(name_index);
+symbolOop f_sig  = cp->symbol_at(sig_index);
+if (f_sig == vmSymbols::reference_signature() && reference_index == 0) {
+// Save the index for reference signature for later use.
+// The fake discovered field does not entries in the
+// constant pool so the index for its signature cannot
+// be extracted from the constant pool.  It will need
+// later, however.  It's signature is vmSymbols::reference_signature()
+// so same an index for that signature.
+reference_sig_index = sig_index;
+reference_name_index = name_index;
+reference_index = i;
+}
+if (f_name == vmSymbols::reference_discovered_name() &&
+f_sig == vmSymbols::reference_signature()) {
+// The values below are fake but will force extra
+// non-static oop fields and a corresponding non-static
+// oop map block to be allocated.
+extra = 0;
+break;
+}
+}
+if (extra != 0) {
+fac_ptr->nonstatic_oop_count += extra;
+// Add the additional entry to "fields" so that the klass
+// contains the "discoverd" field and the field will be initialized
+// in instances of the object.
+int fields_with_fix_length = (*fields_ptr)()->length() +
+instanceKlass::next_offset;
+typeArrayOop ff = oopFactory::new_permanent_shortArray(
+fields_with_fix_length, CHECK);
+typeArrayHandle fields_with_fix(THREAD, ff);
+// Take everything from the original but the length.
+for (int idx = 0; idx < (*fields_ptr)->length(); idx++) {
+fields_with_fix->ushort_at_put(idx, (*fields_ptr)->ushort_at(idx));
+}
+// Add the fake field at the end.
+int i = (*fields_ptr)->length();
+// There is no name index for the fake "discovered" field nor
+// signature but a signature is needed so that the field will
+// be properly initialized.  Use one found for
+// one of the other reference fields. Be sure the index for the
+// name is 0.  In fieldDescriptor::initialize() the index of the
+// name is checked.  That check is by passed for the last nonstatic
+// oop field in a java.lang.ref.Reference which is assumed to be
+// this artificial "discovered" field.  An assertion checks that
+// the name index is 0.
+assert(reference_index != 0, "Missing signature for reference");
+int j;
+for (j = 0; j < instanceKlass::next_offset; j++) {
+fields_with_fix->ushort_at_put(i + j,
+(*fields_ptr)->ushort_at(reference_index +j));
+}
+// Clear the public access flag and set the private access flag.
+short flags;
+flags =
+fields_with_fix->ushort_at(i + instanceKlass::access_flags_offset);
+assert(!(flags & JVM_RECOGNIZED_FIELD_MODIFIERS), "Unexpected access flags set");
+flags = flags & (~JVM_ACC_PUBLIC);
+flags = flags | JVM_ACC_PRIVATE;
+AccessFlags access_flags;
+access_flags.set_flags(flags);
+assert(!access_flags.is_public(), "Failed to clear public flag");
+assert(access_flags.is_private(), "Failed to set private flag");
+fields_with_fix->ushort_at_put(i + instanceKlass::access_flags_offset,
+flags);
+assert(fields_with_fix->ushort_at(i + instanceKlass::name_index_offset)
+== reference_name_index, "The fake reference name is incorrect");
+assert(fields_with_fix->ushort_at(i + instanceKlass::signature_index_offset)
+== reference_sig_index, "The fake reference signature is incorrect");
+// The type of the field is stored in the low_offset entry during
+// parsing.
+assert(fields_with_fix->ushort_at(i + instanceKlass::low_offset) ==
+NONSTATIC_OOP, "The fake reference type is incorrect");
+// "fields" is allocated in the permanent generation.  Disgard
+// it and let it be collected.
+(*fields_ptr) = fields_with_fix;
+}
+return;
+}
+void ClassFileParser::java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
+FieldAllocationCount *fac_ptr, TRAPS) {
+// Add fake fields for java.lang.Class instances
+//
+// This is not particularly nice. We should consider adding a
+// private transient object field at the Java level to
+// java.lang.Class. Alternatively we could add a subclass of
+// instanceKlass which provides an accessor and size computer for
+// this field, but that appears to be more code than this hack.
+//
+// NOTE that we wedge these in at the beginning rather than the
+// end of the object because the Class layout changed between JDK
+// 1.3 and JDK 1.4 with the new reflection implementation; some
+// nonstatic oop fields were added at the Java level. The offsets
+// of these fake fields can't change between these two JDK
+// versions because when the offsets are computed at bootstrap
+// time we don't know yet which version of the JDK we're running in.
+// The values below are fake but will force two non-static oop fields and
+// a corresponding non-static oop map block to be allocated.
+const int extra = java_lang_Class::number_of_fake_oop_fields;
+fac_ptr->nonstatic_oop_count += extra;
+}
+void ClassFileParser::java_lang_Class_fix_post(int* next_nonstatic_oop_offset_ptr) {
+// Cause the extra fake fields in java.lang.Class to show up before
+// the Java fields for layout compatibility between 1.3 and 1.4
+// Incrementing next_nonstatic_oop_offset here advances the
+// location where the real java fields are placed.
+const int extra = java_lang_Class::number_of_fake_oop_fields;
+(*next_nonstatic_oop_offset_ptr) += (extra * wordSize);
+}
+instanceKlassHandle ClassFileParser::parseClassFile(symbolHandle name,
+Handle class_loader,
+Handle protection_domain,
+symbolHandle& parsed_name,
+TRAPS) {
+// So that JVMTI can cache class file in the state before retransformable agents
+// have modified it
+unsigned char *cached_class_file_bytes = NULL;
+jint cached_class_file_length;
+ClassFileStream* cfs = stream();
+// Timing
+PerfTraceTime vmtimer(ClassLoader::perf_accumulated_time());
+_has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
+if (JvmtiExport::should_post_class_file_load_hook()) {
+unsigned char* ptr = cfs->buffer();
+unsigned char* end_ptr = cfs->buffer() + cfs->length();
+JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain,
+&ptr, &end_ptr,
+&cached_class_file_bytes,
+&cached_class_file_length);
+if (ptr != cfs->buffer()) {
+// JVMTI agent has modified class file data.
+// Set new class file stream using JVMTI agent modified
+// class file data.
+cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source());
+set_stream(cfs);
+}
+}
+instanceKlassHandle nullHandle;
+// Figure out whether we can skip format checking (matching classic VM behavior)
+_need_verify = Verifier::should_verify_for(class_loader());
+// Set the verify flag in stream
+cfs->set_verify(_need_verify);
+// Save the class file name for easier error message printing.
+_class_name = name.not_null()? name : vmSymbolHandles::unknown_class_name();
+cfs->guarantee_more(8, CHECK_(nullHandle));  // magic, major, minor
+// Magic value
+u4 magic = cfs->get_u4_fast();
+guarantee_property(magic == JAVA_CLASSFILE_MAGIC,
+"Incompatible magic value %u in class file %s",
+magic, CHECK_(nullHandle));
+// Version numbers
+u2 minor_version = cfs->get_u2_fast();
+u2 major_version = cfs->get_u2_fast();
+// Check version numbers - we check this even with verifier off
+if (!is_supported_version(major_version, minor_version)) {
+if (name.is_null()) {
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
+"Unsupported major.minor version %u.%u",
+major_version,
+minor_version);
+} else {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
+"%s : Unsupported major.minor version %u.%u",
+name->as_C_string(),
+major_version,
+minor_version);
+}
+return nullHandle;
+}
+_major_version = major_version;
+_minor_version = minor_version;
+// Check if verification needs to be relaxed for this class file
+// Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376)
+_relax_verify = Verifier::relax_verify_for(class_loader());
+// Constant pool
+constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle));
+int cp_size = cp->length();
+cfs->guarantee_more(8, CHECK_(nullHandle));  // flags, this_class, super_class, infs_len
+// Access flags
+AccessFlags access_flags;
+jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS;
+if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
+// Set abstract bit for old class files for backward compatibility
+flags |= JVM_ACC_ABSTRACT;
+}
+verify_legal_class_modifiers(flags, CHECK_(nullHandle));
+access_flags.set_flags(flags);
+// This class and superclass
+instanceKlassHandle super_klass;
+u2 this_class_index = cfs->get_u2_fast();
+check_property(
+valid_cp_range(this_class_index, cp_size) &&
+cp->tag_at(this_class_index).is_unresolved_klass(),
+"Invalid this class index %u in constant pool in class file %s",
+this_class_index, CHECK_(nullHandle));
+symbolHandle class_name (THREAD, cp->unresolved_klass_at(this_class_index));
+assert(class_name.not_null(), "class_name can't be null");
+// It's important to set parsed_name *before* resolving the super class.
+// (it's used for cleanup by the caller if parsing fails)
+parsed_name = class_name;
+// Update _class_name which could be null previously to be class_name
+_class_name = class_name;
+// Don't need to check whether this class name is legal or not.
+// It has been checked when constant pool is parsed.
+// However, make sure it is not an array type.
+if (_need_verify) {
+guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY,
+"Bad class name in class file %s",
+CHECK_(nullHandle));
+}
+klassOop preserve_this_klass;   // for storing result across HandleMark
+// release all handles when parsing is done
+{ HandleMark hm(THREAD);
+// Checks if name in class file matches requested name
+if (name.not_null() && class_name() != name()) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_NoClassDefFoundError(),
+"%s (wrong name: %s)",
+name->as_C_string(),
+class_name->as_C_string()
+);
+return nullHandle;
+}
+if (TraceClassLoadingPreorder) {
+tty->print("[Loading %s", name()->as_klass_external_name());
+if (cfs->source() != NULL) tty->print(" from %s", cfs->source());
+tty->print_cr("]");
+}
+u2 super_class_index = cfs->get_u2_fast();
+if (super_class_index == 0) {
+check_property(class_name() == vmSymbols::java_lang_Object(),
+"Invalid superclass index %u in class file %s",
+super_class_index,
+CHECK_(nullHandle));
+} else {
+check_property(valid_cp_range(super_class_index, cp_size) &&
+cp->tag_at(super_class_index).is_unresolved_klass(),
+"Invalid superclass index %u in class file %s",
+super_class_index,
+CHECK_(nullHandle));
+// The class name should be legal because it is checked when parsing constant pool.
+// However, make sure it is not an array type.
+if (_need_verify) {
+guarantee_property(cp->unresolved_klass_at(super_class_index)->byte_at(0) != JVM_SIGNATURE_ARRAY,
+"Bad superclass name in class file %s", CHECK_(nullHandle));
+}
+}
+// Interfaces
+u2 itfs_len = cfs->get_u2_fast();
+objArrayHandle local_interfaces;
+if (itfs_len == 0) {
+local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
+} else {
+local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, &vmtimer, _class_name, CHECK_(nullHandle));
+}
+// Fields (offsets are filled in later)
+struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0};
+objArrayHandle fields_annotations;
+typeArrayHandle fields = parse_fields(cp, access_flags.is_interface(), &fac, &fields_annotations, CHECK_(nullHandle));
+// Methods
+bool has_final_method = false;
+AccessFlags promoted_flags;
+promoted_flags.set_flags(0);
+// These need to be oop pointers because they are allocated lazily
+// inside parse_methods inside a nested HandleMark
+objArrayOop methods_annotations_oop = NULL;
+objArrayOop methods_parameter_annotations_oop = NULL;
+objArrayOop methods_default_annotations_oop = NULL;
+objArrayHandle methods = parse_methods(cp, access_flags.is_interface(),
+&promoted_flags,
+&has_final_method,
+&methods_annotations_oop,
+&methods_parameter_annotations_oop,
+&methods_default_annotations_oop,
+CHECK_(nullHandle));
+objArrayHandle methods_annotations(THREAD, methods_annotations_oop);
+objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop);
+objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop);
+// We check super class after class file is parsed and format is checked
+if (super_class_index > 0) {
+symbolHandle sk (THREAD, cp->klass_name_at(super_class_index));
+if (access_flags.is_interface()) {
+// Before attempting to resolve the superclass, check for class format
+// errors not checked yet.
+guarantee_property(sk() == vmSymbols::java_lang_Object(),
+"Interfaces must have java.lang.Object as superclass in class file %s",
+CHECK_(nullHandle));
+}
+klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
+sk,
+class_loader,
+protection_domain,
+true,
+CHECK_(nullHandle));
+KlassHandle kh (THREAD, k);
+super_klass = instanceKlassHandle(THREAD, kh());
+if (super_klass->is_interface()) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
+"class %s has interface %s as super class",
+class_name->as_klass_external_name(),
+super_klass->external_name()
+);
+return nullHandle;
+}
+// Make sure super class is not final
+if (super_klass->is_final()) {
+THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle);
+}
+}
+// Compute the transitive list of all unique interfaces implemented by this class
+objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle));
+// sort methods
+typeArrayHandle method_ordering = sort_methods(methods,
+methods_annotations,
+methods_parameter_annotations,
+methods_default_annotations,
+CHECK_(nullHandle));
+// promote flags from parse_methods() to the klass' flags
+access_flags.add_promoted_flags(promoted_flags.as_int());
+// Size of Java vtable (in words)
+int vtable_size = 0;
+int itable_size = 0;
+int num_miranda_methods = 0;
+klassVtable::compute_vtable_size_and_num_mirandas(vtable_size,
+num_miranda_methods,
+super_klass(),
+methods(),
+access_flags,
+class_loader(),
+class_name(),
+local_interfaces());
+// Size of Java itable (in words)
+itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces);
+// Field size and offset computation
+int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size();
+#ifndef PRODUCT
+int orig_nonstatic_field_size = 0;
+#endif
+int static_field_size = 0;
+int next_static_oop_offset;
+int next_static_double_offset;
+int next_static_word_offset;
+int next_static_short_offset;
+int next_static_byte_offset;
+int next_static_type_offset;
+int next_nonstatic_oop_offset;
+int next_nonstatic_double_offset;
+int next_nonstatic_word_offset;
+int next_nonstatic_short_offset;
+int next_nonstatic_byte_offset;
+int next_nonstatic_type_offset;
+int first_nonstatic_oop_offset;
+int first_nonstatic_field_offset;
+int next_nonstatic_field_offset;
+// Calculate the starting byte offsets
+next_static_oop_offset      = (instanceKlass::header_size() +
+align_object_offset(vtable_size) +
+align_object_offset(itable_size)) * wordSize;
+next_static_double_offset   = next_static_oop_offset +
+(fac.static_oop_count * oopSize);
+if ( fac.static_double_count &&
+(Universe::field_type_should_be_aligned(T_DOUBLE) ||
+Universe::field_type_should_be_aligned(T_LONG)) ) {
+next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong);
+}
+next_static_word_offset     = next_static_double_offset +
+(fac.static_double_count * BytesPerLong);
+next_static_short_offset    = next_static_word_offset +
+(fac.static_word_count * BytesPerInt);
+next_static_byte_offset     = next_static_short_offset +
+(fac.static_short_count * BytesPerShort);
+next_static_type_offset     = align_size_up((next_static_byte_offset +
+fac.static_byte_count ), wordSize );
+static_field_size           = (next_static_type_offset -
+next_static_oop_offset) / wordSize;
+first_nonstatic_field_offset = (instanceOopDesc::header_size() +
+nonstatic_field_size) * wordSize;
+next_nonstatic_field_offset = first_nonstatic_field_offset;
+// Add fake fields for java.lang.Class instances (also see below)
+if (class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
+java_lang_Class_fix_pre(&methods, &fac, CHECK_(nullHandle));
+}
+// Add a fake "discovered" field if it is not present
+// for compatibility with earlier jdk's.
+if (class_name() == vmSymbols::java_lang_ref_Reference()
+&& class_loader.is_null()) {
+java_lang_ref_Reference_fix_pre(&fields, cp, &fac, CHECK_(nullHandle));
+}
+// end of "discovered" field compactibility fix
+int nonstatic_double_count = fac.nonstatic_double_count;
+int nonstatic_word_count   = fac.nonstatic_word_count;
+int nonstatic_short_count  = fac.nonstatic_short_count;
+int nonstatic_byte_count   = fac.nonstatic_byte_count;
+int nonstatic_oop_count    = fac.nonstatic_oop_count;
+// Prepare list of oops for oop maps generation.
+u2* nonstatic_oop_offsets;
+u2* nonstatic_oop_length;
+int nonstatic_oop_map_count = 0;
+nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  nonstatic_oop_count+1);
+nonstatic_oop_length  = NEW_RESOURCE_ARRAY_IN_THREAD(
+THREAD, u2,  nonstatic_oop_count+1);
+// Add fake fields for java.lang.Class instances (also see above).
+// FieldsAllocationStyle and CompactFields values will be reset to default.
+if(class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
+java_lang_Class_fix_post(&next_nonstatic_field_offset);
+nonstatic_oop_offsets[0] = (u2)first_nonstatic_field_offset;
+int fake_oop_count       = (( next_nonstatic_field_offset -
+first_nonstatic_field_offset ) / oopSize);
+nonstatic_oop_length [0] = (u2)fake_oop_count;
+nonstatic_oop_map_count  = 1;
+nonstatic_oop_count     -= fake_oop_count;
+first_nonstatic_oop_offset = first_nonstatic_field_offset;
+} else {
+first_nonstatic_oop_offset = 0; // will be set for first oop field
+}
+#ifndef PRODUCT
+if( PrintCompactFieldsSavings ) {
+next_nonstatic_double_offset = next_nonstatic_field_offset +
+(nonstatic_oop_count * oopSize);
+if ( nonstatic_double_count > 0 ) {
+next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong);
+}
+next_nonstatic_word_offset  = next_nonstatic_double_offset +
+(nonstatic_double_count * BytesPerLong);
+next_nonstatic_short_offset = next_nonstatic_word_offset +
+(nonstatic_word_count * BytesPerInt);
+next_nonstatic_byte_offset  = next_nonstatic_short_offset +
+(nonstatic_short_count * BytesPerShort);
+next_nonstatic_type_offset  = align_size_up((next_nonstatic_byte_offset +
+nonstatic_byte_count ), wordSize );
+orig_nonstatic_field_size   = nonstatic_field_size +
+((next_nonstatic_type_offset - first_nonstatic_field_offset)/wordSize);
+}
+#endif
+bool compact_fields   = CompactFields;
+int  allocation_style = FieldsAllocationStyle;
+if( allocation_style < 0 || allocation_style > 1 ) { // Out of range?
+assert(false, "0 <= FieldsAllocationStyle <= 1");
+allocation_style = 1; // Optimistic
+}
+// The next classes have predefined hard-coded fields offsets
+// (see in JavaClasses::compute_hard_coded_offsets()).
+// Use default fields allocation order for them.
+if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() &&
+(class_name() == vmSymbols::java_lang_AssertionStatusDirectives() ||
+class_name() == vmSymbols::java_lang_Class() ||
+class_name() == vmSymbols::java_lang_ClassLoader() ||
+class_name() == vmSymbols::java_lang_ref_Reference() ||
+class_name() == vmSymbols::java_lang_ref_SoftReference() ||
+class_name() == vmSymbols::java_lang_StackTraceElement() ||
+class_name() == vmSymbols::java_lang_String() ||
+class_name() == vmSymbols::java_lang_Throwable()) ) {
+allocation_style = 0;     // Allocate oops first
+compact_fields   = false; // Don't compact fields
+}
+if( allocation_style == 0 ) {
+// Fields order: oops, longs/doubles, ints, shorts/chars, bytes
+next_nonstatic_oop_offset    = next_nonstatic_field_offset;
+next_nonstatic_double_offset = next_nonstatic_oop_offset +
+(nonstatic_oop_count * oopSize);
+} else if( allocation_style == 1 ) {
+// Fields order: longs/doubles, ints, shorts/chars, bytes, oops
+next_nonstatic_double_offset = next_nonstatic_field_offset;
+} else {
+ShouldNotReachHere();
+}
+int nonstatic_oop_space_count   = 0;
+int nonstatic_word_space_count  = 0;
+int nonstatic_short_space_count = 0;
+int nonstatic_byte_space_count  = 0;
+int nonstatic_oop_space_offset;
+int nonstatic_word_space_offset;
+int nonstatic_short_space_offset;
+int nonstatic_byte_space_offset;
+if( nonstatic_double_count > 0 ) {
+int offset = next_nonstatic_double_offset;
+next_nonstatic_double_offset = align_size_up(offset, BytesPerLong);
+if( compact_fields && offset != next_nonstatic_double_offset ) {
+// Allocate available fields into the gap before double field.
+int length = next_nonstatic_double_offset - offset;
+assert(length == BytesPerInt, "");
+nonstatic_word_space_offset = offset;
+if( nonstatic_word_count > 0 ) {
+nonstatic_word_count      -= 1;
+nonstatic_word_space_count = 1; // Only one will fit
+length -= BytesPerInt;
+offset += BytesPerInt;
+}
+nonstatic_short_space_offset = offset;
+while( length >= BytesPerShort && nonstatic_short_count > 0 ) {
+nonstatic_short_count       -= 1;
+nonstatic_short_space_count += 1;
+length -= BytesPerShort;
+offset += BytesPerShort;
+}
+nonstatic_byte_space_offset = offset;
+while( length > 0 && nonstatic_byte_count > 0 ) {
+nonstatic_byte_count       -= 1;
+nonstatic_byte_space_count += 1;
+length -= 1;
+}
+// Allocate oop field in the gap if there are no other fields for that.
+nonstatic_oop_space_offset = offset;
+if( length >= oopSize && nonstatic_oop_count > 0 &&
+allocation_style != 0 ) { // when oop fields not first
+nonstatic_oop_count      -= 1;
+nonstatic_oop_space_count = 1; // Only one will fit
+length -= oopSize;
+offset += oopSize;
+}
+}
+}
+next_nonstatic_word_offset  = next_nonstatic_double_offset +
+(nonstatic_double_count * BytesPerLong);
+next_nonstatic_short_offset = next_nonstatic_word_offset +
+(nonstatic_word_count * BytesPerInt);
+next_nonstatic_byte_offset  = next_nonstatic_short_offset +
+(nonstatic_short_count * BytesPerShort);
+int notaligned_offset;
+if( allocation_style == 0 ) {
+notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
+} else { // allocation_style == 1
+next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
+if( nonstatic_oop_count > 0 ) {
+notaligned_offset = next_nonstatic_oop_offset;
+next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, oopSize);
+}
+notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * oopSize);
+}
+next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize );
+nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset
+- first_nonstatic_field_offset)/wordSize);
+// Iterate over fields again and compute correct offsets.
+// The field allocation type was temporarily stored in the offset slot.
+// oop fields are located before non-oop fields (static and non-static).
+int len = fields->length();
+for (int i = 0; i < len; i += instanceKlass::next_offset) {
+int real_offset;
+FieldAllocationType atype = (FieldAllocationType) fields->ushort_at(i+4);
+switch (atype) {
+case STATIC_OOP:
+real_offset = next_static_oop_offset;
+next_static_oop_offset += oopSize;
+break;
+case STATIC_BYTE:
+real_offset = next_static_byte_offset;
+next_static_byte_offset += 1;
+break;
+case STATIC_SHORT:
+real_offset = next_static_short_offset;
+next_static_short_offset += BytesPerShort;
+break;
+case STATIC_WORD:
+real_offset = next_static_word_offset;
+next_static_word_offset += BytesPerInt;
+break;
+case STATIC_ALIGNED_DOUBLE:
+case STATIC_DOUBLE:
+real_offset = next_static_double_offset;
+next_static_double_offset += BytesPerLong;
+break;
+case NONSTATIC_OOP:
+if( nonstatic_oop_space_count > 0 ) {
+real_offset = nonstatic_oop_space_offset;
+nonstatic_oop_space_offset += oopSize;
+nonstatic_oop_space_count  -= 1;
+} else {
+real_offset = next_nonstatic_oop_offset;
+next_nonstatic_oop_offset += oopSize;
+}
+// Update oop maps
+if( nonstatic_oop_map_count > 0 &&
+nonstatic_oop_offsets[nonstatic_oop_map_count - 1] ==
+(u2)(real_offset - nonstatic_oop_length[nonstatic_oop_map_count - 1] * oopSize) ) {
+// Extend current oop map
+nonstatic_oop_length[nonstatic_oop_map_count - 1] += 1;
+} else {
+// Create new oop map
+nonstatic_oop_offsets[nonstatic_oop_map_count] = (u2)real_offset;
+nonstatic_oop_length [nonstatic_oop_map_count] = 1;
+nonstatic_oop_map_count += 1;
+if( first_nonstatic_oop_offset == 0 ) { // Undefined
+first_nonstatic_oop_offset = real_offset;
+}
+}
+break;
+case NONSTATIC_BYTE:
+if( nonstatic_byte_space_count > 0 ) {
+real_offset = nonstatic_byte_space_offset;
+nonstatic_byte_space_offset += 1;
+nonstatic_byte_space_count  -= 1;
+} else {
+real_offset = next_nonstatic_byte_offset;
+next_nonstatic_byte_offset += 1;
+}
+break;
+case NONSTATIC_SHORT:
+if( nonstatic_short_space_count > 0 ) {
+real_offset = nonstatic_short_space_offset;
+nonstatic_short_space_offset += BytesPerShort;
+nonstatic_short_space_count  -= 1;
+} else {
+real_offset = next_nonstatic_short_offset;
+next_nonstatic_short_offset += BytesPerShort;
+}
+break;
+case NONSTATIC_WORD:
+if( nonstatic_word_space_count > 0 ) {
+real_offset = nonstatic_word_space_offset;
+nonstatic_word_space_offset += BytesPerInt;
+nonstatic_word_space_count  -= 1;
+} else {
+real_offset = next_nonstatic_word_offset;
+next_nonstatic_word_offset += BytesPerInt;
+}
+break;
+case NONSTATIC_ALIGNED_DOUBLE:
+case NONSTATIC_DOUBLE:
+real_offset = next_nonstatic_double_offset;
+next_nonstatic_double_offset += BytesPerLong;
+break;
+default:
+ShouldNotReachHere();
+}
+fields->short_at_put(i+4, extract_low_short_from_int(real_offset) );
+fields->short_at_put(i+5, extract_high_short_from_int(real_offset) );
+}
+// Size of instances
+int instance_size;
+instance_size = align_object_size(next_nonstatic_type_offset / wordSize);
+assert(instance_size == align_object_size(instanceOopDesc::header_size() + nonstatic_field_size), "consistent layout helper value");
+// Size of non-static oop map blocks (in words) allocated at end of klass
+int nonstatic_oop_map_size = compute_oop_map_size(super_klass, nonstatic_oop_map_count, first_nonstatic_oop_offset);
+// Compute reference type
+ReferenceType rt;
+if (super_klass() == NULL) {
+rt = REF_NONE;
+} else {
+rt = super_klass->reference_type();
+}
+// We can now create the basic klassOop for this klass
+klassOop ik = oopFactory::new_instanceKlass(
+vtable_size, itable_size,
+static_field_size, nonstatic_oop_map_size,
+rt, CHECK_(nullHandle));
+instanceKlassHandle this_klass (THREAD, ik);
+assert(this_klass->static_field_size() == static_field_size &&
+this_klass->nonstatic_oop_map_size() == nonstatic_oop_map_size, "sanity check");
+// Fill in information already parsed
+this_klass->set_access_flags(access_flags);
+jint lh = Klass::instance_layout_helper(instance_size, false);
+this_klass->set_layout_helper(lh);
+assert(this_klass->oop_is_instance(), "layout is correct");
+assert(this_klass->size_helper() == instance_size, "correct size_helper");
+// Not yet: supers are done below to support the new subtype-checking fields
+//this_klass->set_super(super_klass());
+this_klass->set_class_loader(class_loader());
+this_klass->set_nonstatic_field_size(nonstatic_field_size);
+this_klass->set_static_oop_field_size(fac.static_oop_count);
+cp->set_pool_holder(this_klass());
+this_klass->set_constants(cp());
+this_klass->set_local_interfaces(local_interfaces());
+this_klass->set_fields(fields());
+this_klass->set_methods(methods());
+if (has_final_method) {
+this_klass->set_has_final_method();
+}
+this_klass->set_method_ordering(method_ordering());
+this_klass->set_initial_method_idnum(methods->length());
+this_klass->set_name(cp->klass_name_at(this_class_index));
+this_klass->set_protection_domain(protection_domain());
+this_klass->set_fields_annotations(fields_annotations());
+this_klass->set_methods_annotations(methods_annotations());
+this_klass->set_methods_parameter_annotations(methods_parameter_annotations());
+this_klass->set_methods_default_annotations(methods_default_annotations());
+this_klass->set_minor_version(minor_version);
+this_klass->set_major_version(major_version);
+if (cached_class_file_bytes != NULL) {
+// JVMTI: we have an instanceKlass now, tell it about the cached bytes
+this_klass->set_cached_class_file(cached_class_file_bytes,
+cached_class_file_length);
+}
+// Miranda methods
+if ((num_miranda_methods > 0) ||
+// if this class introduced new miranda methods or
+(super_klass.not_null() && (super_klass->has_miranda_methods()))
+// super class exists and this class inherited miranda methods
+) {
+this_klass->set_has_miranda_methods(); // then set a flag
+}
+// Additional attributes
+parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle));
+// Make sure this is the end of class file stream
+guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle));
+// Initialize static fields
+this_klass->do_local_static_fields(&initialize_static_field, CHECK_(nullHandle));
+// VerifyOops believes that once this has been set, the object is completely loaded.
+// Compute transitive closure of interfaces this class implements
+this_klass->set_transitive_interfaces(transitive_interfaces());
+// Fill in information needed to compute superclasses.
+this_klass->initialize_supers(super_klass(), CHECK_(nullHandle));
+// Initialize itable offset tables
+klassItable::setup_itable_offset_table(this_klass);
+// Do final class setup
+fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_length);
+set_precomputed_flags(this_klass);
+// reinitialize modifiers, using the InnerClasses attribute
+int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle));
+this_klass->set_modifier_flags(computed_modifiers);
+// check if this class can access its super class
+check_super_class_access(this_klass, CHECK_(nullHandle));
+// check if this class can access its superinterfaces
+check_super_interface_access(this_klass, CHECK_(nullHandle));
+// check if this class overrides any final method
+check_final_method_override(this_klass, CHECK_(nullHandle));
+// check that if this class is an interface then it doesn't have static methods
+if (this_klass->is_interface()) {
+check_illegal_static_method(this_klass, CHECK_(nullHandle));
+}
+ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()),
+false /* not shared class */);
+if (TraceClassLoading) {
+// print in a single call to reduce interleaving of output
+if (cfs->source() != NULL) {
+tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
+cfs->source());
+} else if (class_loader.is_null()) {
+if (THREAD->is_Java_thread()) {
+klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1);
+tty->print("[Loaded %s by instance of %s]\n",
+this_klass->external_name(),
+instanceKlass::cast(caller)->external_name());
+} else {
+tty->print("[Loaded %s]\n", this_klass->external_name());
+}
+} else {
+ResourceMark rm;
+tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
+instanceKlass::cast(class_loader->klass())->external_name());
+}
+}
+if (TraceClassResolution) {
+// print out the superclass.
+const char * from = Klass::cast(this_klass())->external_name();
+if (this_klass->java_super() != NULL) {
+tty->print("RESOLVE %s %s\n", from, instanceKlass::cast(this_klass->java_super())->external_name());
+}
+// print out each of the interface classes referred to by this class.
+objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces());
+if (!local_interfaces.is_null()) {
+int length = local_interfaces->length();
+for (int i = 0; i < length; i++) {
+klassOop k = klassOop(local_interfaces->obj_at(i));
+instanceKlass* to_class = instanceKlass::cast(k);
+const char * to = to_class->external_name();
+tty->print("RESOLVE %s %s\n", from, to);
+}
+}
+}
+#ifndef PRODUCT
+if( PrintCompactFieldsSavings ) {
+if( nonstatic_field_size < orig_nonstatic_field_size ) {
+tty->print("[Saved %d of %3d words in %s]\n",
+orig_nonstatic_field_size - nonstatic_field_size,
+orig_nonstatic_field_size, this_klass->external_name());
+} else if( nonstatic_field_size > orig_nonstatic_field_size ) {
+tty->print("[Wasted %d over %3d words in %s]\n",
+nonstatic_field_size - orig_nonstatic_field_size,
+orig_nonstatic_field_size, this_klass->external_name());
+}
+}
+#endif
+// preserve result across HandleMark
+preserve_this_klass = this_klass();
+}
+// Create new handle outside HandleMark
+instanceKlassHandle this_klass (THREAD, preserve_this_klass);
+debug_only(this_klass->as_klassOop()->verify();)
+return this_klass;
+}
+int ClassFileParser::compute_oop_map_size(instanceKlassHandle super, int nonstatic_oop_map_count, int first_nonstatic_oop_offset) {
+int map_size = super.is_null() ? 0 : super->nonstatic_oop_map_size();
+if (nonstatic_oop_map_count > 0) {
+// We have oops to add to map
+if (map_size == 0) {
+map_size = nonstatic_oop_map_count;
+} else {
+// Check whether we should add a new map block or whether the last one can be extended
+OopMapBlock* first_map = super->start_of_nonstatic_oop_maps();
+OopMapBlock* last_map = first_map + map_size - 1;
+int next_offset = last_map->offset() + (last_map->length() * oopSize);
+if (next_offset == first_nonstatic_oop_offset) {
+// There is no gap bettwen superklass's last oop field and first
+// local oop field, merge maps.
+nonstatic_oop_map_count -= 1;
+} else {
+// Superklass didn't end with a oop field, add extra maps
+assert(next_offset<first_nonstatic_oop_offset, "just checking");
+}
+map_size += nonstatic_oop_map_count;
+}
+}
+return map_size;
+}
+void ClassFileParser::fill_oop_maps(instanceKlassHandle k,
+int nonstatic_oop_map_count,
+u2* nonstatic_oop_offsets, u2* nonstatic_oop_length) {
+OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps();
+OopMapBlock* last_oop_map = this_oop_map + k->nonstatic_oop_map_size();
+instanceKlass* super = k->superklass();
+if (super != NULL) {
+int super_oop_map_size     = super->nonstatic_oop_map_size();
+OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps();
+// Copy maps from superklass
+while (super_oop_map_size-- > 0) {
+*this_oop_map++ = *super_oop_map++;
+}
+}
+if (nonstatic_oop_map_count > 0) {
+if (this_oop_map + nonstatic_oop_map_count > last_oop_map) {
+// Calculated in compute_oop_map_size() number of oop maps is less then
+// collected oop maps since there is no gap between superklass's last oop
+// field and first local oop field. Extend the last oop map copied
+// from the superklass instead of creating new one.
+nonstatic_oop_map_count--;
+nonstatic_oop_offsets++;
+this_oop_map--;
+this_oop_map->set_length(this_oop_map->length() + *nonstatic_oop_length++);
+this_oop_map++;
+}
+assert((this_oop_map + nonstatic_oop_map_count) == last_oop_map, "just checking");
+// Add new map blocks, fill them
+while (nonstatic_oop_map_count-- > 0) {
+this_oop_map->set_offset(*nonstatic_oop_offsets++);
+this_oop_map->set_length(*nonstatic_oop_length++);
+this_oop_map++;
+}
+}
+}
+void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) {
+klassOop super = k->super();
+// Check if this klass has an empty finalize method (i.e. one with return bytecode only),
+// in which case we don't have to register objects as finalizable
+if (!_has_empty_finalizer) {
+if (_has_finalizer ||
+(super != NULL && super->klass_part()->has_finalizer())) {
+k->set_has_finalizer();
+}
+}
+#ifdef ASSERT
+bool f = false;
+methodOop m = k->lookup_method(vmSymbols::finalize_method_name(),
+vmSymbols::void_method_signature());
+if (m != NULL && !m->is_empty_method()) {
+f = true;
+}
+assert(f == k->has_finalizer(), "inconsistent has_finalizer");
+#endif
+// Check if this klass supports the java.lang.Cloneable interface
+if (SystemDictionary::cloneable_klass_loaded()) {
+if (k->is_subtype_of(SystemDictionary::cloneable_klass())) {
+k->set_is_cloneable();
+}
+}
+// Check if this klass has a vanilla default constructor
+if (super == NULL) {
+// java.lang.Object has empty default constructor
+k->set_has_vanilla_constructor();
+} else {
+if (Klass::cast(super)->has_vanilla_constructor() &&
+_has_vanilla_constructor) {
+k->set_has_vanilla_constructor();
+}
+#ifdef ASSERT
+bool v = false;
+if (Klass::cast(super)->has_vanilla_constructor()) {
+methodOop constructor = k->find_method(vmSymbols::object_initializer_name(
+), vmSymbols::void_method_signature());
+if (constructor != NULL && constructor->is_vanilla_constructor()) {
+v = true;
+}
+}
+assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor");
+#endif
+}
+// If it cannot be fast-path allocated, set a bit in the layout helper.
+// See documentation of instanceKlass::can_be_fastpath_allocated().
+assert(k->size_helper() > 0, "layout_helper is initialized");
+if ((!RegisterFinalizersAtInit && k->has_finalizer())
+|| k->is_abstract() || k->is_interface()
+|| (k->name() == vmSymbols::java_lang_Class()
+&& k->class_loader() == NULL)
+|| k->size_helper() >= FastAllocateSizeLimit) {
+// Forbid fast-path allocation.
+jint lh = Klass::instance_layout_helper(k->size_helper(), true);
+k->set_layout_helper(lh);
+}
+}
+// utility method for appending and array with check for duplicates
+void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) {
+// iterate over new interfaces
+for (int i = 0; i < ifs->length(); i++) {
+oop e = ifs->obj_at(i);
+assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking");
+// check for duplicates
+bool duplicate = false;
+for (int j = 0; j < index; j++) {
+if (result->obj_at(j) == e) {
+duplicate = true;
+break;
+}
+}
+// add new interface
+if (!duplicate) {
+result->obj_at_put(index++, e);
+}
+}
+}
+objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) {
+// Compute maximum size for transitive interfaces
+int max_transitive_size = 0;
+int super_size = 0;
+// Add superclass transitive interfaces size
+if (super.not_null()) {
+super_size = super->transitive_interfaces()->length();
+max_transitive_size += super_size;
+}
+// Add local interfaces' super interfaces
+int local_size = local_ifs->length();
+for (int i = 0; i < local_size; i++) {
+klassOop l = klassOop(local_ifs->obj_at(i));
+max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length();
+}
+// Finally add local interfaces
+max_transitive_size += local_size;
+// Construct array
+objArrayHandle result;
+if (max_transitive_size == 0) {
+// no interfaces, use canonicalized array
+result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
+} else if (max_transitive_size == super_size) {
+// no new local interfaces added, share superklass' transitive interface array
+result = objArrayHandle(THREAD, super->transitive_interfaces());
+} else if (max_transitive_size == local_size) {
+// only local interfaces added, share local interface array
+result = local_ifs;
+} else {
+objArrayHandle nullHandle;
+objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle));
+result = objArrayHandle(THREAD, new_objarray);
+int index = 0;
+// Copy down from superclass
+if (super.not_null()) {
+append_interfaces(result, index, super->transitive_interfaces());
+}
+// Copy down from local interfaces' superinterfaces
+for (int i = 0; i < local_ifs->length(); i++) {
+klassOop l = klassOop(local_ifs->obj_at(i));
+append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces());
+}
+// Finally add local interfaces
+append_interfaces(result, index, local_ifs());
+// Check if duplicates were removed
+if (index != max_transitive_size) {
+assert(index < max_transitive_size, "just checking");
+objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle));
+for (int i = 0; i < index; i++) {
+oop e = result->obj_at(i);
+assert(e != NULL, "just checking");
+new_result->obj_at_put(i, e);
+}
+result = objArrayHandle(THREAD, new_result);
+}
+}
+return result;
+}
+void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) {
+klassOop super = this_klass->super();
+if ((super != NULL) &&
+(!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_IllegalAccessError(),
+"class %s cannot access its superclass %s",
+this_klass->external_name(),
+instanceKlass::cast(super)->external_name()
+);
+return;
+}
+}
+void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) {
+objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces());
+int lng = local_interfaces->length();
+for (int i = lng - 1; i >= 0; i--) {
+klassOop k = klassOop(local_interfaces->obj_at(i));
+assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface");
+if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_IllegalAccessError(),
+"class %s cannot access its superinterface %s",
+this_klass->external_name(),
+instanceKlass::cast(k)->external_name()
+);
+return;
+}
+}
+}
+void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) {
+objArrayHandle methods (THREAD, this_klass->methods());
+int num_methods = methods->length();
+// go thru each method and check if it overrides a final method
+for (int index = 0; index < num_methods; index++) {
+methodOop m = (methodOop)methods->obj_at(index);
+// skip private, static and <init> methods
+if ((!m->is_private()) &&
+(!m->is_static()) &&
+(m->name() != vmSymbols::object_initializer_name())) {
+symbolOop name = m->name();
+symbolOop signature = m->signature();
+klassOop k = this_klass->super();
+methodOop super_m = NULL;
+while (k != NULL) {
+// skip supers that don't have final methods.
+if (k->klass_part()->has_final_method()) {
+// lookup a matching method in the super class hierarchy
+super_m = instanceKlass::cast(k)->lookup_method(name, signature);
+if (super_m == NULL) {
+break; // didn't find any match; get out
+}
+if (super_m->is_final() &&
+// matching method in super is final
+(Reflection::verify_field_access(this_klass->as_klassOop(),
+super_m->method_holder(),
+super_m->method_holder(),
+super_m->access_flags(), false))
+// this class can access super final method and therefore override
+) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_VerifyError(),
+"class %s overrides final method %s.%s",
+this_klass->external_name(),
+name->as_C_string(),
+signature->as_C_string()
+);
+return;
+}
+// continue to look from super_m's holder's super.
+k = instanceKlass::cast(super_m->method_holder())->super();
+continue;
+}
+k = k->klass_part()->super();
+}
+}
+}
+}
+// assumes that this_klass is an interface
+void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) {
+assert(this_klass->is_interface(), "not an interface");
+objArrayHandle methods (THREAD, this_klass->methods());
+int num_methods = methods->length();
+for (int index = 0; index < num_methods; index++) {
+methodOop m = (methodOop)methods->obj_at(index);
+// if m is static and not the init method, throw a verify error
+if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_VerifyError(),
+"Illegal static method %s in interface %s",
+m->name()->as_C_string(),
+this_klass->external_name()
+);
+return;
+}
+}
+}
+// utility methods for format checking
+void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) {
+if (!_need_verify) { return; }
+const bool is_interface  = (flags & JVM_ACC_INTERFACE)  != 0;
+const bool is_abstract   = (flags & JVM_ACC_ABSTRACT)   != 0;
+const bool is_final      = (flags & JVM_ACC_FINAL)      != 0;
+const bool is_super      = (flags & JVM_ACC_SUPER)      != 0;
+const bool is_enum       = (flags & JVM_ACC_ENUM)       != 0;
+const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0;
+const bool major_gte_15  = _major_version >= JAVA_1_5_VERSION;
+if ((is_abstract && is_final) ||
+(is_interface && !is_abstract) ||
+(is_interface && major_gte_15 && (is_super || is_enum)) ||
+(!is_interface && major_gte_15 && is_annotation)) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Illegal class modifiers in class %s: 0x%X",
+_class_name->as_C_string(), flags
+);
+return;
+}
+}
+bool ClassFileParser::has_illegal_visibility(jint flags) {
+const bool is_public    = (flags & JVM_ACC_PUBLIC)    != 0;
+const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
+const bool is_private   = (flags & JVM_ACC_PRIVATE)   != 0;
+return ((is_public && is_protected) ||
+(is_public && is_private) ||
+(is_protected && is_private));
+}
+bool ClassFileParser::is_supported_version(u2 major, u2 minor) {
+return (major >= JAVA_MIN_SUPPORTED_VERSION) &&
+(major <= JAVA_MAX_SUPPORTED_VERSION) &&
+((major != JAVA_MAX_SUPPORTED_VERSION) ||
+(minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION));
+}
+void ClassFileParser::verify_legal_field_modifiers(
+jint flags, bool is_interface, TRAPS) {
+if (!_need_verify) { return; }
+const bool is_public    = (flags & JVM_ACC_PUBLIC)    != 0;
+const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
+const bool is_private   = (flags & JVM_ACC_PRIVATE)   != 0;
+const bool is_static    = (flags & JVM_ACC_STATIC)    != 0;
+const bool is_final     = (flags & JVM_ACC_FINAL)     != 0;
+const bool is_volatile  = (flags & JVM_ACC_VOLATILE)  != 0;
+const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0;
+const bool is_enum      = (flags & JVM_ACC_ENUM)      != 0;
+const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
+bool is_illegal = false;
+if (is_interface) {
+if (!is_public || !is_static || !is_final || is_private ||
+is_protected || is_volatile || is_transient ||
+(major_gte_15 && is_enum)) {
+is_illegal = true;
+}
+} else { // not interface
+if (has_illegal_visibility(flags) || (is_final && is_volatile)) {
+is_illegal = true;
+}
+}
+if (is_illegal) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Illegal field modifiers in class %s: 0x%X",
+_class_name->as_C_string(), flags);
+return;
+}
+}
+void ClassFileParser::verify_legal_method_modifiers(
+jint flags, bool is_interface, symbolHandle name, TRAPS) {
+if (!_need_verify) { return; }
+const bool is_public       = (flags & JVM_ACC_PUBLIC)       != 0;
+const bool is_private      = (flags & JVM_ACC_PRIVATE)      != 0;
+const bool is_static       = (flags & JVM_ACC_STATIC)       != 0;
+const bool is_final        = (flags & JVM_ACC_FINAL)        != 0;
+const bool is_native       = (flags & JVM_ACC_NATIVE)       != 0;
+const bool is_abstract     = (flags & JVM_ACC_ABSTRACT)     != 0;
+const bool is_bridge       = (flags & JVM_ACC_BRIDGE)       != 0;
+const bool is_strict       = (flags & JVM_ACC_STRICT)       != 0;
+const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0;
+const bool major_gte_15    = _major_version >= JAVA_1_5_VERSION;
+const bool is_initializer  = (name == vmSymbols::object_initializer_name());
+bool is_illegal = false;
+if (is_interface) {
+if (!is_abstract || !is_public || is_static || is_final ||
+is_native || (major_gte_15 && (is_synchronized || is_strict))) {
+is_illegal = true;
+}
+} else { // not interface
+if (is_initializer) {
+if (is_static || is_final || is_synchronized || is_native ||
+is_abstract || (major_gte_15 && is_bridge)) {
+is_illegal = true;
+}
+} else { // not initializer
+if (is_abstract) {
+if ((is_final || is_native || is_private || is_static ||
+(major_gte_15 && (is_synchronized || is_strict)))) {
+is_illegal = true;
+}
+}
+if (has_illegal_visibility(flags)) {
+is_illegal = true;
+}
+}
+}
+if (is_illegal) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Method %s in class %s has illegal modifiers: 0x%X",
+name->as_C_string(), _class_name->as_C_string(), flags);
+return;
+}
+}
+void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) {
+assert(_need_verify, "only called when _need_verify is true");
+int i = 0;
+int count = length >> 2;
+for (int k=0; k<count; k++) {
+unsigned char b0 = buffer[i];
+unsigned char b1 = buffer[i+1];
+unsigned char b2 = buffer[i+2];
+unsigned char b3 = buffer[i+3];
+// For an unsigned char v,
+// (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128;
+// (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128.
+unsigned char res = b0 | b0 - 1 |
+b1 | b1 - 1 |
+b2 | b2 - 1 |
+b3 | b3 - 1;
+if (res >= 128) break;
+i += 4;
+}
+for(; i < length; i++) {
+unsigned short c;
+// no embedded zeros
+guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK);
+if(buffer[i] < 128) {
+continue;
+}
+if ((i + 5) < length) { // see if it's legal supplementary character
+if (UTF8::is_supplementary_character(&buffer[i])) {
+c = UTF8::get_supplementary_character(&buffer[i]);
+i += 5;
+continue;
+}
+}
+switch (buffer[i] >> 4) {
+default: break;
+case 0x8: case 0x9: case 0xA: case 0xB: case 0xF:
+classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
+case 0xC: case 0xD:  // 110xxxxx  10xxxxxx
+c = (buffer[i] & 0x1F) << 6;
+i++;
+if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) {
+c += buffer[i] & 0x3F;
+if (_major_version <= 47 || c == 0 || c >= 0x80) {
+// for classes with major > 47, c must a null or a character in its shortest form
+break;
+}
+}
+classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
+case 0xE:  // 1110xxxx 10xxxxxx 10xxxxxx
+c = (buffer[i] & 0xF) << 12;
+i += 2;
+if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) {
+c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F);
+if (_major_version <= 47 || c >= 0x800) {
+// for classes with major > 47, c must be in its shortest form
+break;
+}
+}
+classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
+}  // end of switch
+} // end of for
+}
+// Checks if name is a legal class name.
+void ClassFileParser::verify_legal_class_name(symbolHandle name, TRAPS) {
+if (!_need_verify || _relax_verify) { return; }
+char buf[fixed_buffer_size];
+char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
+unsigned int length = name->utf8_length();
+bool legal = false;
+if (length > 0) {
+char* p;
+if (bytes[0] == JVM_SIGNATURE_ARRAY) {
+p = skip_over_field_signature(bytes, false, length, CHECK);
+legal = (p != NULL) && ((p - bytes) == (int)length);
+} else if (_major_version < JAVA_1_5_VERSION) {
+if (bytes[0] != '<') {
+p = skip_over_field_name(bytes, true, length);
+legal = (p != NULL) && ((p - bytes) == (int)length);
+}
+} else {
+// 4900761: relax the constraints based on JSR202 spec
+// Class names may be drawn from the entire Unicode character set.
+// Identifiers between '/' must be unqualified names.
+// The utf8 string has been verified when parsing cpool entries.
+legal = verify_unqualified_name(bytes, length, LegalClass);
+}
+}
+if (!legal) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Illegal class name \"%s\" in class file %s", bytes,
+_class_name->as_C_string()
+);
+return;
+}
+}
+// Checks if name is a legal field name.
+void ClassFileParser::verify_legal_field_name(symbolHandle name, TRAPS) {
+if (!_need_verify || _relax_verify) { return; }
+char buf[fixed_buffer_size];
+char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
+unsigned int length = name->utf8_length();
+bool legal = false;
+if (length > 0) {
+if (_major_version < JAVA_1_5_VERSION) {
+if (bytes[0] != '<') {
+char* p = skip_over_field_name(bytes, false, length);
+legal = (p != NULL) && ((p - bytes) == (int)length);
+}
+} else {
+// 4881221: relax the constraints based on JSR202 spec
+legal = verify_unqualified_name(bytes, length, LegalField);
+}
+}
+if (!legal) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Illegal field name \"%s\" in class %s", bytes,
+_class_name->as_C_string()
+);
+return;
+}
+}
+// Checks if name is a legal method name.
+void ClassFileParser::verify_legal_method_name(symbolHandle name, TRAPS) {
+if (!_need_verify || _relax_verify) { return; }
+assert(!name.is_null(), "method name is null");
+char buf[fixed_buffer_size];
+char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
+unsigned int length = name->utf8_length();
+bool legal = false;
+if (length > 0) {
+if (bytes[0] == '<') {
+if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) {
+legal = true;
+}
+} else if (_major_version < JAVA_1_5_VERSION) {
+char* p;
+p = skip_over_field_name(bytes, false, length);
+legal = (p != NULL) && ((p - bytes) == (int)length);
+} else {
+// 4881221: relax the constraints based on JSR202 spec
+legal = verify_unqualified_name(bytes, length, LegalMethod);
+}
+}
+if (!legal) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Illegal method name \"%s\" in class %s", bytes,
+_class_name->as_C_string()
+);
+return;
+}
+}
+// Checks if signature is a legal field signature.
+void ClassFileParser::verify_legal_field_signature(symbolHandle name, symbolHandle signature, TRAPS) {
+if (!_need_verify) { return; }
+char buf[fixed_buffer_size];
+char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
+unsigned int length = signature->utf8_length();
+char* p = skip_over_field_signature(bytes, false, length, CHECK);
+if (p == NULL || (p - bytes) != (int)length) {
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Field \"%s\" in class %s has illegal signature \"%s\"",
+name->as_C_string(), _class_name->as_C_string(), bytes
+);
+return;
+}
+}
+// Checks if signature is a legal method signature.
+// Returns number of parameters
+int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHandle signature, TRAPS) {
+if (!_need_verify) {
+// make sure caller's args_size will be less than 0 even for non-static
+// method so it will be recomputed in compute_size_of_parameters().
+return -2;
+}
+unsigned int args_size = 0;
+char buf[fixed_buffer_size];
+char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
+unsigned int length = signature->utf8_length();
+char* nextp;
+// The first character must be a '('
+if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) {
+length--;
+// Skip over legal field signatures
+nextp = skip_over_field_signature(p, false, length, CHECK_0);
+while ((length > 0) && (nextp != NULL)) {
+args_size++;
+if (p[0] == 'J' || p[0] == 'D') {
+args_size++;
+}
+length -= nextp - p;
+p = nextp;
+nextp = skip_over_field_signature(p, false, length, CHECK_0);
+}
+// The first non-signature thing better be a ')'
+if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) {
+length--;
+if (name->utf8_length() > 0 && name->byte_at(0) == '<') {
+// All internal methods must return void
+if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) {
+return args_size;
+}
+} else {
+// Now we better just have a return value
+nextp = skip_over_field_signature(p, true, length, CHECK_0);
+if (nextp && ((int)length == (nextp - p))) {
+return args_size;
+}
+}
+}
+}
+// Report error
+ResourceMark rm(THREAD);
+Exceptions::fthrow(
+THREAD_AND_LOCATION,
+vmSymbolHandles::java_lang_ClassFormatError(),
+"Method \"%s\" in class %s has illegal signature \"%s\"",
+name->as_C_string(),  _class_name->as_C_string(), p
+);
+return 0;
+}
+// Unqualified names may not contain the characters '.', ';', or '/'.
+// Method names also may not contain the characters '<' or '>', unless <init> or <clinit>.
+// Note that method names may not be <init> or <clinit> in this method.
+// Because these names have been checked as special cases before calling this method
+// in verify_legal_method_name.
+bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) {
+jchar ch;
+for (char* p = name; p != name + length; ) {
+ch = *p;
+if (ch < 128) {
+p++;
+if (ch == '.' || ch == ';') {
+return false;   // do not permit '.' or ';'
+}
+if (type != LegalClass && ch == '/') {
+return false;   // do not permit '/' unless it's class name
+}
+if (type == LegalMethod && (ch == '<' || ch == '>')) {
+return false;   // do not permit '<' or '>' in method names
+}
+} else {
+char* tmp_p = UTF8::next(p, &ch);
+p = tmp_p;
+}
+}
+return true;
+}
+// Take pointer to a string. Skip over the longest part of the string that could
+// be taken as a fieldname. Allow '/' if slash_ok is true.
+// Return a pointer to just past the fieldname.
+// Return NULL if no fieldname at all was found, or in the case of slash_ok
+// being true, we saw consecutive slashes (meaning we were looking for a
+// qualified path but found something that was badly-formed).
+char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) {
+char* p;
+jchar ch;
+jboolean last_is_slash = false;
+jboolean not_first_ch = false;
+for (p = name; p != name + length; not_first_ch = true) {
+char* old_p = p;
+ch = *p;
+if (ch < 128) {
+p++;
+// quick check for ascii
+if ((ch >= 'a' && ch <= 'z') ||
+(ch >= 'A' && ch <= 'Z') ||
+(ch == '_' || ch == '$') ||
+(not_first_ch && ch >= '0' && ch <= '9')) {
+last_is_slash = false;
+continue;
+}
+if (slash_ok && ch == '/') {
+if (last_is_slash) {
+return NULL;  // Don't permit consecutive slashes
+}
+last_is_slash = true;
+continue;
+}
+} else {
+jint unicode_ch;
+char* tmp_p = UTF8::next_character(p, &unicode_ch);
+p = tmp_p;
+last_is_slash = false;
+// Check if ch is Java identifier start or is Java identifier part
+// 4672820: call java.lang.Character methods directly without generating separate tables.
+EXCEPTION_MARK;
+instanceKlassHandle klass (THREAD, SystemDictionary::char_klass());
+// return value
+JavaValue result(T_BOOLEAN);
+// Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart
+JavaCallArguments args;
+args.push_int(unicode_ch);
+// public static boolean isJavaIdentifierStart(char ch);
+JavaCalls::call_static(&result,
+klass,
+vmSymbolHandles::isJavaIdentifierStart_name(),
+vmSymbolHandles::int_bool_signature(),
+&args,
+THREAD);
+if (HAS_PENDING_EXCEPTION) {
+CLEAR_PENDING_EXCEPTION;
+return 0;
+}
+if (result.get_jboolean()) {
+continue;
+}
+if (not_first_ch) {
+// public static boolean isJavaIdentifierPart(char ch);
+JavaCalls::call_static(&result,
+klass,
+vmSymbolHandles::isJavaIdentifierPart_name(),
+vmSymbolHandles::int_bool_signature(),
+&args,
+THREAD);
+if (HAS_PENDING_EXCEPTION) {
+CLEAR_PENDING_EXCEPTION;
+return 0;
+}
+if (result.get_jboolean()) {
+continue;
+}
+}
+}
+return (not_first_ch) ? old_p : NULL;
+}
+return (not_first_ch) ? p : NULL;
+}
+// Take pointer to a string. Skip over the longest part of the string that could
+// be taken as a field signature. Allow "void" if void_ok.
+// Return a pointer to just past the signature.
+// Return NULL if no legal signature is found.
+char* ClassFileParser::skip_over_field_signature(char* signature,
+bool void_ok,
+unsigned int length,
+TRAPS) {
+unsigned int array_dim = 0;
+while (length > 0) {
+switch (signature[0]) {
+case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; }
+case JVM_SIGNATURE_BOOLEAN:
+case JVM_SIGNATURE_BYTE:
+case JVM_SIGNATURE_CHAR:
+case JVM_SIGNATURE_SHORT:
+case JVM_SIGNATURE_INT:
+case JVM_SIGNATURE_FLOAT:
+case JVM_SIGNATURE_LONG:
+case JVM_SIGNATURE_DOUBLE:
+return signature + 1;
+case JVM_SIGNATURE_CLASS: {
+if (_major_version < JAVA_1_5_VERSION) {
+// Skip over the class name if one is there
+char* p = skip_over_field_name(signature + 1, true, --length);
+// The next character better be a semicolon
+if (p && (p - signature) > 1 && p[0] == ';') {
+return p + 1;
+}
+} else {
+// 4900761: For class version > 48, any unicode is allowed in class name.
+length--;
+signature++;
+while (length > 0 && signature[0] != ';') {
+if (signature[0] == '.') {
+classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0);
+}
+length--;
+signature++;
+}
+if (signature[0] == ';') { return signature + 1; }
+}
+return NULL;
+}
+case JVM_SIGNATURE_ARRAY:
+array_dim++;
+if (array_dim > 255) {
+// 4277370: array descriptor is valid only if it represents 255 or fewer dimensions.
+classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0);
+}
+// The rest of what's there better be a legal signature
+signature++;
+length--;
+void_ok = false;
+break;
+default:
+return NULL;
+}
+}
+return NULL;
+}

Mercurial > hg > graal-compiler

comparison src/share/vm/classfile/classFileParser.cpp @ 0:a61af66fc99e jdk7-b24