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/*
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* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_classFileParser.cpp.incl"
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// We generally try to create the oops directly when parsing, rather than allocating
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// temporary data structures and copying the bytes twice. A temporary area is only
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// needed when parsing utf8 entries in the constant pool and when parsing line number
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// tables.
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// We add assert in debug mode when class format is not checked.
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#define JAVA_CLASSFILE_MAGIC 0xCAFEBABE
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#define JAVA_MIN_SUPPORTED_VERSION 45
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#define JAVA_MAX_SUPPORTED_VERSION 50
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#define JAVA_MAX_SUPPORTED_MINOR_VERSION 0
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// Used for two backward compatibility reasons:
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// - to check for new additions to the class file format in JDK1.5
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// - to check for bug fixes in the format checker in JDK1.5
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#define JAVA_1_5_VERSION 49
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// Used for backward compatibility reasons:
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// - to check for javac bug fixes that happened after 1.5
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#define JAVA_6_VERSION 50
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void ClassFileParser::parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS) {
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// Use a local copy of ClassFileStream. It helps the C++ compiler to optimize
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// this function (_current can be allocated in a register, with scalar
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// replacement of aggregates). The _current pointer is copied back to
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// stream() when this function returns. DON'T call another method within
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// this method that uses stream().
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ClassFileStream* cfs0 = stream();
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ClassFileStream cfs1 = *cfs0;
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ClassFileStream* cfs = &cfs1;
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#ifdef ASSERT
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u1* old_current = cfs0->current();
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#endif
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// Used for batching symbol allocations.
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const char* names[SymbolTable::symbol_alloc_batch_size];
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int lengths[SymbolTable::symbol_alloc_batch_size];
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int indices[SymbolTable::symbol_alloc_batch_size];
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unsigned int hashValues[SymbolTable::symbol_alloc_batch_size];
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int names_count = 0;
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// parsing Index 0 is unused
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for (int index = 1; index < length; index++) {
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// Each of the following case guarantees one more byte in the stream
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// for the following tag or the access_flags following constant pool,
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// so we don't need bounds-check for reading tag.
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u1 tag = cfs->get_u1_fast();
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switch (tag) {
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case JVM_CONSTANT_Class :
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{
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cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags
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u2 name_index = cfs->get_u2_fast();
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cp->klass_index_at_put(index, name_index);
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}
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break;
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case JVM_CONSTANT_Fieldref :
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{
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cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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u2 class_index = cfs->get_u2_fast();
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u2 name_and_type_index = cfs->get_u2_fast();
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cp->field_at_put(index, class_index, name_and_type_index);
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}
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break;
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case JVM_CONSTANT_Methodref :
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{
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cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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u2 class_index = cfs->get_u2_fast();
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u2 name_and_type_index = cfs->get_u2_fast();
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cp->method_at_put(index, class_index, name_and_type_index);
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}
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break;
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case JVM_CONSTANT_InterfaceMethodref :
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{
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cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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u2 class_index = cfs->get_u2_fast();
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u2 name_and_type_index = cfs->get_u2_fast();
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cp->interface_method_at_put(index, class_index, name_and_type_index);
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}
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break;
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case JVM_CONSTANT_String :
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{
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cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags
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u2 string_index = cfs->get_u2_fast();
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cp->string_index_at_put(index, string_index);
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}
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break;
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case JVM_CONSTANT_Integer :
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{
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cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags
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u4 bytes = cfs->get_u4_fast();
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cp->int_at_put(index, (jint) bytes);
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}
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break;
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case JVM_CONSTANT_Float :
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{
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cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags
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u4 bytes = cfs->get_u4_fast();
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cp->float_at_put(index, *(jfloat*)&bytes);
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}
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break;
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case JVM_CONSTANT_Long :
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// A mangled type might cause you to overrun allocated memory
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guarantee_property(index+1 < length,
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"Invalid constant pool entry %u in class file %s",
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index, CHECK);
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{
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cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags
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u8 bytes = cfs->get_u8_fast();
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cp->long_at_put(index, bytes);
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}
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index++; // Skip entry following eigth-byte constant, see JVM book p. 98
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break;
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case JVM_CONSTANT_Double :
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// A mangled type might cause you to overrun allocated memory
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guarantee_property(index+1 < length,
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"Invalid constant pool entry %u in class file %s",
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index, CHECK);
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{
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cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags
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u8 bytes = cfs->get_u8_fast();
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cp->double_at_put(index, *(jdouble*)&bytes);
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}
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index++; // Skip entry following eigth-byte constant, see JVM book p. 98
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break;
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case JVM_CONSTANT_NameAndType :
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{
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cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags
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u2 name_index = cfs->get_u2_fast();
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u2 signature_index = cfs->get_u2_fast();
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cp->name_and_type_at_put(index, name_index, signature_index);
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}
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break;
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case JVM_CONSTANT_Utf8 :
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{
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cfs->guarantee_more(2, CHECK); // utf8_length
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u2 utf8_length = cfs->get_u2_fast();
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u1* utf8_buffer = cfs->get_u1_buffer();
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assert(utf8_buffer != NULL, "null utf8 buffer");
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// Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward.
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cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags
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cfs->skip_u1_fast(utf8_length);
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// Before storing the symbol, make sure it's legal
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if (_need_verify) {
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verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK);
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}
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unsigned int hash;
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symbolOop result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash);
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if (result == NULL) {
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names[names_count] = (char*)utf8_buffer;
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lengths[names_count] = utf8_length;
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indices[names_count] = index;
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hashValues[names_count++] = hash;
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if (names_count == SymbolTable::symbol_alloc_batch_size) {
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oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
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names_count = 0;
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}
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} else {
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cp->symbol_at_put(index, result);
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}
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}
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break;
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default:
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classfile_parse_error(
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"Unknown constant tag %u in class file %s", tag, CHECK);
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break;
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}
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}
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// Allocate the remaining symbols
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if (names_count > 0) {
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oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
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}
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// Copy _current pointer of local copy back to stream().
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#ifdef ASSERT
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assert(cfs0->current() == old_current, "non-exclusive use of stream()");
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#endif
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cfs0->set_current(cfs1.current());
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}
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bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); }
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constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) {
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ClassFileStream* cfs = stream();
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constantPoolHandle nullHandle;
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cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag
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u2 length = cfs->get_u2_fast();
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guarantee_property(
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length >= 1, "Illegal constant pool size %u in class file %s",
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length, CHECK_(nullHandle));
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constantPoolOop constant_pool =
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oopFactory::new_constantPool(length, CHECK_(nullHandle));
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constantPoolHandle cp (THREAD, constant_pool);
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cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops
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// parsing constant pool entries
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parse_constant_pool_entries(cp, length, CHECK_(nullHandle));
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int index = 1; // declared outside of loops for portability
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// first verification pass - validate cross references and fixup class and string constants
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for (index = 1; index < length; index++) { // Index 0 is unused
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switch (cp->tag_at(index).value()) {
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case JVM_CONSTANT_Class :
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ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present
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break;
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case JVM_CONSTANT_Fieldref :
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// fall through
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case JVM_CONSTANT_Methodref :
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// fall through
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case JVM_CONSTANT_InterfaceMethodref : {
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if (!_need_verify) break;
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int klass_ref_index = cp->klass_ref_index_at(index);
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int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
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check_property(valid_cp_range(klass_ref_index, length) &&
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cp->tag_at(klass_ref_index).is_klass_reference(),
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"Invalid constant pool index %u in class file %s",
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klass_ref_index,
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CHECK_(nullHandle));
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check_property(valid_cp_range(name_and_type_ref_index, length) &&
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cp->tag_at(name_and_type_ref_index).is_name_and_type(),
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"Invalid constant pool index %u in class file %s",
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name_and_type_ref_index,
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CHECK_(nullHandle));
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break;
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}
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case JVM_CONSTANT_String :
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ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present
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break;
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case JVM_CONSTANT_Integer :
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break;
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case JVM_CONSTANT_Float :
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break;
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case JVM_CONSTANT_Long :
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case JVM_CONSTANT_Double :
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index++;
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check_property(
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(index < length && cp->tag_at(index).is_invalid()),
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"Improper constant pool long/double index %u in class file %s",
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index, CHECK_(nullHandle));
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break;
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case JVM_CONSTANT_NameAndType : {
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if (!_need_verify) break;
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int name_ref_index = cp->name_ref_index_at(index);
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int signature_ref_index = cp->signature_ref_index_at(index);
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check_property(
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valid_cp_range(name_ref_index, length) &&
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cp->tag_at(name_ref_index).is_utf8(),
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"Invalid constant pool index %u in class file %s",
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name_ref_index, CHECK_(nullHandle));
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check_property(
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valid_cp_range(signature_ref_index, length) &&
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cp->tag_at(signature_ref_index).is_utf8(),
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"Invalid constant pool index %u in class file %s",
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signature_ref_index, CHECK_(nullHandle));
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break;
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}
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case JVM_CONSTANT_Utf8 :
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break;
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case JVM_CONSTANT_UnresolvedClass : // fall-through
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case JVM_CONSTANT_UnresolvedClassInError:
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ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present
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break;
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case JVM_CONSTANT_ClassIndex :
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{
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int class_index = cp->klass_index_at(index);
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check_property(
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valid_cp_range(class_index, length) &&
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cp->tag_at(class_index).is_utf8(),
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"Invalid constant pool index %u in class file %s",
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class_index, CHECK_(nullHandle));
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cp->unresolved_klass_at_put(index, cp->symbol_at(class_index));
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}
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break;
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case JVM_CONSTANT_UnresolvedString :
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ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present
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break;
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case JVM_CONSTANT_StringIndex :
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{
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int string_index = cp->string_index_at(index);
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check_property(
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valid_cp_range(string_index, length) &&
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cp->tag_at(string_index).is_utf8(),
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"Invalid constant pool index %u in class file %s",
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string_index, CHECK_(nullHandle));
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symbolOop sym = cp->symbol_at(string_index);
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cp->unresolved_string_at_put(index, sym);
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}
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break;
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default:
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fatal1("bad constant pool tag value %u", cp->tag_at(index).value());
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ShouldNotReachHere();
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break;
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} // end of switch
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} // end of for
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if (!_need_verify) {
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return cp;
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}
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// second verification pass - checks the strings are of the right format.
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for (index = 1; index < length; index++) {
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jbyte tag = cp->tag_at(index).value();
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switch (tag) {
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case JVM_CONSTANT_UnresolvedClass: {
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symbolHandle class_name(THREAD, cp->unresolved_klass_at(index));
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verify_legal_class_name(class_name, CHECK_(nullHandle));
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break;
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}
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case JVM_CONSTANT_Fieldref:
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case JVM_CONSTANT_Methodref:
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case JVM_CONSTANT_InterfaceMethodref: {
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int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
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// already verified to be utf8
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int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index);
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// already verified to be utf8
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int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index);
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symbolHandle name(THREAD, cp->symbol_at(name_ref_index));
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symbolHandle signature(THREAD, cp->symbol_at(signature_ref_index));
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if (tag == JVM_CONSTANT_Fieldref) {
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verify_legal_field_name(name, CHECK_(nullHandle));
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verify_legal_field_signature(name, signature, CHECK_(nullHandle));
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} else {
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verify_legal_method_name(name, CHECK_(nullHandle));
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verify_legal_method_signature(name, signature, CHECK_(nullHandle));
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if (tag == JVM_CONSTANT_Methodref) {
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// 4509014: If a class method name begins with '<', it must be "<init>".
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assert(!name.is_null(), "method name in constant pool is null");
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unsigned int name_len = name->utf8_length();
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assert(name_len > 0, "bad method name"); // already verified as legal name
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if (name->byte_at(0) == '<') {
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if (name() != vmSymbols::object_initializer_name()) {
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classfile_parse_error(
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"Bad method name at constant pool index %u in class file %s",
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name_ref_index, CHECK_(nullHandle));
|
|
367 |
}
|
|
368 |
}
|
|
369 |
}
|
|
370 |
}
|
|
371 |
break;
|
|
372 |
}
|
|
373 |
} // end of switch
|
|
374 |
} // end of for
|
|
375 |
|
|
376 |
return cp;
|
|
377 |
}
|
|
378 |
|
|
379 |
|
|
380 |
class NameSigHash: public ResourceObj {
|
|
381 |
public:
|
|
382 |
symbolOop _name; // name
|
|
383 |
symbolOop _sig; // signature
|
|
384 |
NameSigHash* _next; // Next entry in hash table
|
|
385 |
};
|
|
386 |
|
|
387 |
|
|
388 |
#define HASH_ROW_SIZE 256
|
|
389 |
|
|
390 |
unsigned int hash(symbolOop name, symbolOop sig) {
|
|
391 |
unsigned int raw_hash = 0;
|
|
392 |
raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2);
|
|
393 |
raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize;
|
|
394 |
|
|
395 |
return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE;
|
|
396 |
}
|
|
397 |
|
|
398 |
|
|
399 |
void initialize_hashtable(NameSigHash** table) {
|
|
400 |
memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE);
|
|
401 |
}
|
|
402 |
|
|
403 |
// Return false if the name/sig combination is found in table.
|
|
404 |
// Return true if no duplicate is found. And name/sig is added as a new entry in table.
|
|
405 |
// The old format checker uses heap sort to find duplicates.
|
|
406 |
// NOTE: caller should guarantee that GC doesn't happen during the life cycle
|
|
407 |
// of table since we don't expect symbolOop's to move.
|
|
408 |
bool put_after_lookup(symbolOop name, symbolOop sig, NameSigHash** table) {
|
|
409 |
assert(name != NULL, "name in constant pool is NULL");
|
|
410 |
|
|
411 |
// First lookup for duplicates
|
|
412 |
int index = hash(name, sig);
|
|
413 |
NameSigHash* entry = table[index];
|
|
414 |
while (entry != NULL) {
|
|
415 |
if (entry->_name == name && entry->_sig == sig) {
|
|
416 |
return false;
|
|
417 |
}
|
|
418 |
entry = entry->_next;
|
|
419 |
}
|
|
420 |
|
|
421 |
// No duplicate is found, allocate a new entry and fill it.
|
|
422 |
entry = new NameSigHash();
|
|
423 |
entry->_name = name;
|
|
424 |
entry->_sig = sig;
|
|
425 |
|
|
426 |
// Insert into hash table
|
|
427 |
entry->_next = table[index];
|
|
428 |
table[index] = entry;
|
|
429 |
|
|
430 |
return true;
|
|
431 |
}
|
|
432 |
|
|
433 |
|
|
434 |
objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp,
|
|
435 |
int length,
|
|
436 |
Handle class_loader,
|
|
437 |
Handle protection_domain,
|
|
438 |
PerfTraceTime* vmtimer,
|
|
439 |
symbolHandle class_name,
|
|
440 |
TRAPS) {
|
|
441 |
ClassFileStream* cfs = stream();
|
|
442 |
assert(length > 0, "only called for length>0");
|
|
443 |
objArrayHandle nullHandle;
|
|
444 |
objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
445 |
objArrayHandle interfaces (THREAD, interface_oop);
|
|
446 |
|
|
447 |
int index;
|
|
448 |
for (index = 0; index < length; index++) {
|
|
449 |
u2 interface_index = cfs->get_u2(CHECK_(nullHandle));
|
|
450 |
check_property(
|
|
451 |
valid_cp_range(interface_index, cp->length()) &&
|
|
452 |
cp->tag_at(interface_index).is_unresolved_klass(),
|
|
453 |
"Interface name has bad constant pool index %u in class file %s",
|
|
454 |
interface_index, CHECK_(nullHandle));
|
|
455 |
symbolHandle unresolved_klass (THREAD, cp->klass_name_at(interface_index));
|
|
456 |
|
|
457 |
// Don't need to check legal name because it's checked when parsing constant pool.
|
|
458 |
// But need to make sure it's not an array type.
|
|
459 |
guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
460 |
"Bad interface name in class file %s", CHECK_(nullHandle));
|
|
461 |
|
|
462 |
vmtimer->suspend(); // do not count recursive loading twice
|
|
463 |
// Call resolve_super so classcircularity is checked
|
|
464 |
klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
|
|
465 |
unresolved_klass, class_loader, protection_domain,
|
|
466 |
false, CHECK_(nullHandle));
|
|
467 |
KlassHandle interf (THREAD, k);
|
|
468 |
vmtimer->resume();
|
|
469 |
|
|
470 |
if (!Klass::cast(interf())->is_interface()) {
|
|
471 |
THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle);
|
|
472 |
}
|
|
473 |
interfaces->obj_at_put(index, interf());
|
|
474 |
}
|
|
475 |
|
|
476 |
if (!_need_verify || length <= 1) {
|
|
477 |
return interfaces;
|
|
478 |
}
|
|
479 |
|
|
480 |
// Check if there's any duplicates in interfaces
|
|
481 |
ResourceMark rm(THREAD);
|
|
482 |
NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
483 |
THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
484 |
initialize_hashtable(interface_names);
|
|
485 |
bool dup = false;
|
|
486 |
{
|
|
487 |
debug_only(No_Safepoint_Verifier nsv;)
|
|
488 |
for (index = 0; index < length; index++) {
|
|
489 |
klassOop k = (klassOop)interfaces->obj_at(index);
|
|
490 |
symbolOop name = instanceKlass::cast(k)->name();
|
|
491 |
// If no duplicates, add (name, NULL) in hashtable interface_names.
|
|
492 |
if (!put_after_lookup(name, NULL, interface_names)) {
|
|
493 |
dup = true;
|
|
494 |
break;
|
|
495 |
}
|
|
496 |
}
|
|
497 |
}
|
|
498 |
if (dup) {
|
|
499 |
classfile_parse_error("Duplicate interface name in class file %s",
|
|
500 |
CHECK_(nullHandle));
|
|
501 |
}
|
|
502 |
|
|
503 |
return interfaces;
|
|
504 |
}
|
|
505 |
|
|
506 |
|
|
507 |
void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) {
|
|
508 |
// Make sure the constant pool entry is of a type appropriate to this field
|
|
509 |
guarantee_property(
|
|
510 |
(constantvalue_index > 0 &&
|
|
511 |
constantvalue_index < cp->length()),
|
|
512 |
"Bad initial value index %u in ConstantValue attribute in class file %s",
|
|
513 |
constantvalue_index, CHECK);
|
|
514 |
constantTag value_type = cp->tag_at(constantvalue_index);
|
|
515 |
switch ( cp->basic_type_for_signature_at(signature_index) ) {
|
|
516 |
case T_LONG:
|
|
517 |
guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK);
|
|
518 |
break;
|
|
519 |
case T_FLOAT:
|
|
520 |
guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK);
|
|
521 |
break;
|
|
522 |
case T_DOUBLE:
|
|
523 |
guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK);
|
|
524 |
break;
|
|
525 |
case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT:
|
|
526 |
guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK);
|
|
527 |
break;
|
|
528 |
case T_OBJECT:
|
|
529 |
guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;", 18)
|
|
530 |
&& (value_type.is_string() || value_type.is_unresolved_string())),
|
|
531 |
"Bad string initial value in class file %s", CHECK);
|
|
532 |
break;
|
|
533 |
default:
|
|
534 |
classfile_parse_error(
|
|
535 |
"Unable to set initial value %u in class file %s",
|
|
536 |
constantvalue_index, CHECK);
|
|
537 |
}
|
|
538 |
}
|
|
539 |
|
|
540 |
|
|
541 |
// Parse attributes for a field.
|
|
542 |
void ClassFileParser::parse_field_attributes(constantPoolHandle cp,
|
|
543 |
u2 attributes_count,
|
|
544 |
bool is_static, u2 signature_index,
|
|
545 |
u2* constantvalue_index_addr,
|
|
546 |
bool* is_synthetic_addr,
|
|
547 |
u2* generic_signature_index_addr,
|
|
548 |
typeArrayHandle* field_annotations,
|
|
549 |
TRAPS) {
|
|
550 |
ClassFileStream* cfs = stream();
|
|
551 |
assert(attributes_count > 0, "length should be greater than 0");
|
|
552 |
u2 constantvalue_index = 0;
|
|
553 |
u2 generic_signature_index = 0;
|
|
554 |
bool is_synthetic = false;
|
|
555 |
u1* runtime_visible_annotations = NULL;
|
|
556 |
int runtime_visible_annotations_length = 0;
|
|
557 |
u1* runtime_invisible_annotations = NULL;
|
|
558 |
int runtime_invisible_annotations_length = 0;
|
|
559 |
while (attributes_count--) {
|
|
560 |
cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length
|
|
561 |
u2 attribute_name_index = cfs->get_u2_fast();
|
|
562 |
u4 attribute_length = cfs->get_u4_fast();
|
|
563 |
check_property(valid_cp_range(attribute_name_index, cp->length()) &&
|
|
564 |
cp->tag_at(attribute_name_index).is_utf8(),
|
|
565 |
"Invalid field attribute index %u in class file %s",
|
|
566 |
attribute_name_index,
|
|
567 |
CHECK);
|
|
568 |
symbolOop attribute_name = cp->symbol_at(attribute_name_index);
|
|
569 |
if (is_static && attribute_name == vmSymbols::tag_constant_value()) {
|
|
570 |
// ignore if non-static
|
|
571 |
if (constantvalue_index != 0) {
|
|
572 |
classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK);
|
|
573 |
}
|
|
574 |
check_property(
|
|
575 |
attribute_length == 2,
|
|
576 |
"Invalid ConstantValue field attribute length %u in class file %s",
|
|
577 |
attribute_length, CHECK);
|
|
578 |
constantvalue_index = cfs->get_u2(CHECK);
|
|
579 |
if (_need_verify) {
|
|
580 |
verify_constantvalue(constantvalue_index, signature_index, cp, CHECK);
|
|
581 |
}
|
|
582 |
} else if (attribute_name == vmSymbols::tag_synthetic()) {
|
|
583 |
if (attribute_length != 0) {
|
|
584 |
classfile_parse_error(
|
|
585 |
"Invalid Synthetic field attribute length %u in class file %s",
|
|
586 |
attribute_length, CHECK);
|
|
587 |
}
|
|
588 |
is_synthetic = true;
|
|
589 |
} else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120
|
|
590 |
if (attribute_length != 0) {
|
|
591 |
classfile_parse_error(
|
|
592 |
"Invalid Deprecated field attribute length %u in class file %s",
|
|
593 |
attribute_length, CHECK);
|
|
594 |
}
|
|
595 |
} else if (_major_version >= JAVA_1_5_VERSION) {
|
|
596 |
if (attribute_name == vmSymbols::tag_signature()) {
|
|
597 |
if (attribute_length != 2) {
|
|
598 |
classfile_parse_error(
|
|
599 |
"Wrong size %u for field's Signature attribute in class file %s",
|
|
600 |
attribute_length, CHECK);
|
|
601 |
}
|
|
602 |
generic_signature_index = cfs->get_u2(CHECK);
|
|
603 |
} else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
|
|
604 |
runtime_visible_annotations_length = attribute_length;
|
|
605 |
runtime_visible_annotations = cfs->get_u1_buffer();
|
|
606 |
assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
607 |
cfs->skip_u1(runtime_visible_annotations_length, CHECK);
|
|
608 |
} else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
609 |
runtime_invisible_annotations_length = attribute_length;
|
|
610 |
runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
611 |
assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
612 |
cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
|
|
613 |
} else {
|
|
614 |
cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes
|
|
615 |
}
|
|
616 |
} else {
|
|
617 |
cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes
|
|
618 |
}
|
|
619 |
}
|
|
620 |
|
|
621 |
*constantvalue_index_addr = constantvalue_index;
|
|
622 |
*is_synthetic_addr = is_synthetic;
|
|
623 |
*generic_signature_index_addr = generic_signature_index;
|
|
624 |
*field_annotations = assemble_annotations(runtime_visible_annotations,
|
|
625 |
runtime_visible_annotations_length,
|
|
626 |
runtime_invisible_annotations,
|
|
627 |
runtime_invisible_annotations_length,
|
|
628 |
CHECK);
|
|
629 |
return;
|
|
630 |
}
|
|
631 |
|
|
632 |
|
|
633 |
// Field allocation types. Used for computing field offsets.
|
|
634 |
|
|
635 |
enum FieldAllocationType {
|
|
636 |
STATIC_OOP, // Oops
|
|
637 |
STATIC_BYTE, // Boolean, Byte, char
|
|
638 |
STATIC_SHORT, // shorts
|
|
639 |
STATIC_WORD, // ints
|
|
640 |
STATIC_DOUBLE, // long or double
|
|
641 |
STATIC_ALIGNED_DOUBLE,// aligned long or double
|
|
642 |
NONSTATIC_OOP,
|
|
643 |
NONSTATIC_BYTE,
|
|
644 |
NONSTATIC_SHORT,
|
|
645 |
NONSTATIC_WORD,
|
|
646 |
NONSTATIC_DOUBLE,
|
|
647 |
NONSTATIC_ALIGNED_DOUBLE
|
|
648 |
};
|
|
649 |
|
|
650 |
|
|
651 |
struct FieldAllocationCount {
|
|
652 |
int static_oop_count;
|
|
653 |
int static_byte_count;
|
|
654 |
int static_short_count;
|
|
655 |
int static_word_count;
|
|
656 |
int static_double_count;
|
|
657 |
int nonstatic_oop_count;
|
|
658 |
int nonstatic_byte_count;
|
|
659 |
int nonstatic_short_count;
|
|
660 |
int nonstatic_word_count;
|
|
661 |
int nonstatic_double_count;
|
|
662 |
};
|
|
663 |
|
|
664 |
typeArrayHandle ClassFileParser::parse_fields(constantPoolHandle cp, bool is_interface,
|
|
665 |
struct FieldAllocationCount *fac,
|
|
666 |
objArrayHandle* fields_annotations, TRAPS) {
|
|
667 |
ClassFileStream* cfs = stream();
|
|
668 |
typeArrayHandle nullHandle;
|
|
669 |
cfs->guarantee_more(2, CHECK_(nullHandle)); // length
|
|
670 |
u2 length = cfs->get_u2_fast();
|
|
671 |
// Tuples of shorts [access, name index, sig index, initial value index, byte offset, generic signature index]
|
|
672 |
typeArrayOop new_fields = oopFactory::new_permanent_shortArray(length*instanceKlass::next_offset, CHECK_(nullHandle));
|
|
673 |
typeArrayHandle fields(THREAD, new_fields);
|
|
674 |
|
|
675 |
int index = 0;
|
|
676 |
typeArrayHandle field_annotations;
|
|
677 |
for (int n = 0; n < length; n++) {
|
|
678 |
cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count
|
|
679 |
|
|
680 |
AccessFlags access_flags;
|
|
681 |
jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
682 |
verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle));
|
|
683 |
access_flags.set_flags(flags);
|
|
684 |
|
|
685 |
u2 name_index = cfs->get_u2_fast();
|
|
686 |
int cp_size = cp->length();
|
|
687 |
check_property(
|
|
688 |
valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(),
|
|
689 |
"Invalid constant pool index %u for field name in class file %s",
|
|
690 |
name_index, CHECK_(nullHandle));
|
|
691 |
symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
692 |
verify_legal_field_name(name, CHECK_(nullHandle));
|
|
693 |
|
|
694 |
u2 signature_index = cfs->get_u2_fast();
|
|
695 |
check_property(
|
|
696 |
valid_cp_range(signature_index, cp_size) &&
|
|
697 |
cp->tag_at(signature_index).is_utf8(),
|
|
698 |
"Invalid constant pool index %u for field signature in class file %s",
|
|
699 |
signature_index, CHECK_(nullHandle));
|
|
700 |
symbolHandle sig(THREAD, cp->symbol_at(signature_index));
|
|
701 |
verify_legal_field_signature(name, sig, CHECK_(nullHandle));
|
|
702 |
|
|
703 |
u2 constantvalue_index = 0;
|
|
704 |
bool is_synthetic = false;
|
|
705 |
u2 generic_signature_index = 0;
|
|
706 |
bool is_static = access_flags.is_static();
|
|
707 |
|
|
708 |
u2 attributes_count = cfs->get_u2_fast();
|
|
709 |
if (attributes_count > 0) {
|
|
710 |
parse_field_attributes(cp, attributes_count, is_static, signature_index,
|
|
711 |
&constantvalue_index, &is_synthetic,
|
|
712 |
&generic_signature_index, &field_annotations,
|
|
713 |
CHECK_(nullHandle));
|
|
714 |
if (field_annotations.not_null()) {
|
|
715 |
if (fields_annotations->is_null()) {
|
|
716 |
objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
717 |
*fields_annotations = objArrayHandle(THREAD, md);
|
|
718 |
}
|
|
719 |
(*fields_annotations)->obj_at_put(n, field_annotations());
|
|
720 |
}
|
|
721 |
if (is_synthetic) {
|
|
722 |
access_flags.set_is_synthetic();
|
|
723 |
}
|
|
724 |
}
|
|
725 |
|
|
726 |
fields->short_at_put(index++, access_flags.as_short());
|
|
727 |
fields->short_at_put(index++, name_index);
|
|
728 |
fields->short_at_put(index++, signature_index);
|
|
729 |
fields->short_at_put(index++, constantvalue_index);
|
|
730 |
|
|
731 |
// Remember how many oops we encountered and compute allocation type
|
|
732 |
BasicType type = cp->basic_type_for_signature_at(signature_index);
|
|
733 |
FieldAllocationType atype;
|
|
734 |
if ( is_static ) {
|
|
735 |
switch ( type ) {
|
|
736 |
case T_BOOLEAN:
|
|
737 |
case T_BYTE:
|
|
738 |
fac->static_byte_count++;
|
|
739 |
atype = STATIC_BYTE;
|
|
740 |
break;
|
|
741 |
case T_LONG:
|
|
742 |
case T_DOUBLE:
|
|
743 |
if (Universe::field_type_should_be_aligned(type)) {
|
|
744 |
atype = STATIC_ALIGNED_DOUBLE;
|
|
745 |
} else {
|
|
746 |
atype = STATIC_DOUBLE;
|
|
747 |
}
|
|
748 |
fac->static_double_count++;
|
|
749 |
break;
|
|
750 |
case T_CHAR:
|
|
751 |
case T_SHORT:
|
|
752 |
fac->static_short_count++;
|
|
753 |
atype = STATIC_SHORT;
|
|
754 |
break;
|
|
755 |
case T_FLOAT:
|
|
756 |
case T_INT:
|
|
757 |
fac->static_word_count++;
|
|
758 |
atype = STATIC_WORD;
|
|
759 |
break;
|
|
760 |
case T_ARRAY:
|
|
761 |
case T_OBJECT:
|
|
762 |
fac->static_oop_count++;
|
|
763 |
atype = STATIC_OOP;
|
|
764 |
break;
|
|
765 |
case T_ADDRESS:
|
|
766 |
case T_VOID:
|
|
767 |
default:
|
|
768 |
assert(0, "bad field type");
|
|
769 |
}
|
|
770 |
} else {
|
|
771 |
switch ( type ) {
|
|
772 |
case T_BOOLEAN:
|
|
773 |
case T_BYTE:
|
|
774 |
fac->nonstatic_byte_count++;
|
|
775 |
atype = NONSTATIC_BYTE;
|
|
776 |
break;
|
|
777 |
case T_LONG:
|
|
778 |
case T_DOUBLE:
|
|
779 |
if (Universe::field_type_should_be_aligned(type)) {
|
|
780 |
atype = NONSTATIC_ALIGNED_DOUBLE;
|
|
781 |
} else {
|
|
782 |
atype = NONSTATIC_DOUBLE;
|
|
783 |
}
|
|
784 |
fac->nonstatic_double_count++;
|
|
785 |
break;
|
|
786 |
case T_CHAR:
|
|
787 |
case T_SHORT:
|
|
788 |
fac->nonstatic_short_count++;
|
|
789 |
atype = NONSTATIC_SHORT;
|
|
790 |
break;
|
|
791 |
case T_FLOAT:
|
|
792 |
case T_INT:
|
|
793 |
fac->nonstatic_word_count++;
|
|
794 |
atype = NONSTATIC_WORD;
|
|
795 |
break;
|
|
796 |
case T_ARRAY:
|
|
797 |
case T_OBJECT:
|
|
798 |
fac->nonstatic_oop_count++;
|
|
799 |
atype = NONSTATIC_OOP;
|
|
800 |
break;
|
|
801 |
case T_ADDRESS:
|
|
802 |
case T_VOID:
|
|
803 |
default:
|
|
804 |
assert(0, "bad field type");
|
|
805 |
}
|
|
806 |
}
|
|
807 |
|
|
808 |
// The correct offset is computed later (all oop fields will be located together)
|
|
809 |
// We temporarily store the allocation type in the offset field
|
|
810 |
fields->short_at_put(index++, atype);
|
|
811 |
fields->short_at_put(index++, 0); // Clear out high word of byte offset
|
|
812 |
fields->short_at_put(index++, generic_signature_index);
|
|
813 |
}
|
|
814 |
|
|
815 |
if (_need_verify && length > 1) {
|
|
816 |
// Check duplicated fields
|
|
817 |
ResourceMark rm(THREAD);
|
|
818 |
NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
819 |
THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
820 |
initialize_hashtable(names_and_sigs);
|
|
821 |
bool dup = false;
|
|
822 |
{
|
|
823 |
debug_only(No_Safepoint_Verifier nsv;)
|
|
824 |
for (int i = 0; i < length*instanceKlass::next_offset; i += instanceKlass::next_offset) {
|
|
825 |
int name_index = fields->ushort_at(i + instanceKlass::name_index_offset);
|
|
826 |
symbolOop name = cp->symbol_at(name_index);
|
|
827 |
int sig_index = fields->ushort_at(i + instanceKlass::signature_index_offset);
|
|
828 |
symbolOop sig = cp->symbol_at(sig_index);
|
|
829 |
// If no duplicates, add name/signature in hashtable names_and_sigs.
|
|
830 |
if (!put_after_lookup(name, sig, names_and_sigs)) {
|
|
831 |
dup = true;
|
|
832 |
break;
|
|
833 |
}
|
|
834 |
}
|
|
835 |
}
|
|
836 |
if (dup) {
|
|
837 |
classfile_parse_error("Duplicate field name&signature in class file %s",
|
|
838 |
CHECK_(nullHandle));
|
|
839 |
}
|
|
840 |
}
|
|
841 |
|
|
842 |
return fields;
|
|
843 |
}
|
|
844 |
|
|
845 |
|
|
846 |
static void copy_u2_with_conversion(u2* dest, u2* src, int length) {
|
|
847 |
while (length-- > 0) {
|
|
848 |
*dest++ = Bytes::get_Java_u2((u1*) (src++));
|
|
849 |
}
|
|
850 |
}
|
|
851 |
|
|
852 |
|
|
853 |
typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length,
|
|
854 |
u4 exception_table_length,
|
|
855 |
constantPoolHandle cp,
|
|
856 |
TRAPS) {
|
|
857 |
ClassFileStream* cfs = stream();
|
|
858 |
typeArrayHandle nullHandle;
|
|
859 |
|
|
860 |
// 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index]
|
|
861 |
typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle));
|
|
862 |
typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh);
|
|
863 |
|
|
864 |
int index = 0;
|
|
865 |
cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index
|
|
866 |
for (unsigned int i = 0; i < exception_table_length; i++) {
|
|
867 |
u2 start_pc = cfs->get_u2_fast();
|
|
868 |
u2 end_pc = cfs->get_u2_fast();
|
|
869 |
u2 handler_pc = cfs->get_u2_fast();
|
|
870 |
u2 catch_type_index = cfs->get_u2_fast();
|
|
871 |
// Will check legal target after parsing code array in verifier.
|
|
872 |
if (_need_verify) {
|
|
873 |
guarantee_property((start_pc < end_pc) && (end_pc <= code_length),
|
|
874 |
"Illegal exception table range in class file %s", CHECK_(nullHandle));
|
|
875 |
guarantee_property(handler_pc < code_length,
|
|
876 |
"Illegal exception table handler in class file %s", CHECK_(nullHandle));
|
|
877 |
if (catch_type_index != 0) {
|
|
878 |
guarantee_property(valid_cp_range(catch_type_index, cp->length()) &&
|
|
879 |
(cp->tag_at(catch_type_index).is_klass() ||
|
|
880 |
cp->tag_at(catch_type_index).is_unresolved_klass()),
|
|
881 |
"Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle));
|
|
882 |
}
|
|
883 |
}
|
|
884 |
exception_handlers->int_at_put(index++, start_pc);
|
|
885 |
exception_handlers->int_at_put(index++, end_pc);
|
|
886 |
exception_handlers->int_at_put(index++, handler_pc);
|
|
887 |
exception_handlers->int_at_put(index++, catch_type_index);
|
|
888 |
}
|
|
889 |
return exception_handlers;
|
|
890 |
}
|
|
891 |
|
|
892 |
void ClassFileParser::parse_linenumber_table(
|
|
893 |
u4 code_attribute_length, u4 code_length,
|
|
894 |
CompressedLineNumberWriteStream** write_stream, TRAPS) {
|
|
895 |
ClassFileStream* cfs = stream();
|
|
896 |
unsigned int num_entries = cfs->get_u2(CHECK);
|
|
897 |
|
|
898 |
// Each entry is a u2 start_pc, and a u2 line_number
|
|
899 |
unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2));
|
|
900 |
|
|
901 |
// Verify line number attribute and table length
|
|
902 |
check_property(
|
|
903 |
code_attribute_length == sizeof(u2) + length_in_bytes,
|
|
904 |
"LineNumberTable attribute has wrong length in class file %s", CHECK);
|
|
905 |
|
|
906 |
cfs->guarantee_more(length_in_bytes, CHECK);
|
|
907 |
|
|
908 |
if ((*write_stream) == NULL) {
|
|
909 |
if (length_in_bytes > fixed_buffer_size) {
|
|
910 |
(*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes);
|
|
911 |
} else {
|
|
912 |
(*write_stream) = new CompressedLineNumberWriteStream(
|
|
913 |
linenumbertable_buffer, fixed_buffer_size);
|
|
914 |
}
|
|
915 |
}
|
|
916 |
|
|
917 |
while (num_entries-- > 0) {
|
|
918 |
u2 bci = cfs->get_u2_fast(); // start_pc
|
|
919 |
u2 line = cfs->get_u2_fast(); // line_number
|
|
920 |
guarantee_property(bci < code_length,
|
|
921 |
"Invalid pc in LineNumberTable in class file %s", CHECK);
|
|
922 |
(*write_stream)->write_pair(bci, line);
|
|
923 |
}
|
|
924 |
}
|
|
925 |
|
|
926 |
|
|
927 |
// Class file LocalVariableTable elements.
|
|
928 |
class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC {
|
|
929 |
public:
|
|
930 |
u2 start_bci;
|
|
931 |
u2 length;
|
|
932 |
u2 name_cp_index;
|
|
933 |
u2 descriptor_cp_index;
|
|
934 |
u2 slot;
|
|
935 |
};
|
|
936 |
|
|
937 |
|
|
938 |
class LVT_Hash: public CHeapObj {
|
|
939 |
public:
|
|
940 |
LocalVariableTableElement *_elem; // element
|
|
941 |
LVT_Hash* _next; // Next entry in hash table
|
|
942 |
};
|
|
943 |
|
|
944 |
unsigned int hash(LocalVariableTableElement *elem) {
|
|
945 |
unsigned int raw_hash = elem->start_bci;
|
|
946 |
|
|
947 |
raw_hash = elem->length + raw_hash * 37;
|
|
948 |
raw_hash = elem->name_cp_index + raw_hash * 37;
|
|
949 |
raw_hash = elem->slot + raw_hash * 37;
|
|
950 |
|
|
951 |
return raw_hash % HASH_ROW_SIZE;
|
|
952 |
}
|
|
953 |
|
|
954 |
void initialize_hashtable(LVT_Hash** table) {
|
|
955 |
for (int i = 0; i < HASH_ROW_SIZE; i++) {
|
|
956 |
table[i] = NULL;
|
|
957 |
}
|
|
958 |
}
|
|
959 |
|
|
960 |
void clear_hashtable(LVT_Hash** table) {
|
|
961 |
for (int i = 0; i < HASH_ROW_SIZE; i++) {
|
|
962 |
LVT_Hash* current = table[i];
|
|
963 |
LVT_Hash* next;
|
|
964 |
while (current != NULL) {
|
|
965 |
next = current->_next;
|
|
966 |
current->_next = NULL;
|
|
967 |
delete(current);
|
|
968 |
current = next;
|
|
969 |
}
|
|
970 |
table[i] = NULL;
|
|
971 |
}
|
|
972 |
}
|
|
973 |
|
|
974 |
LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) {
|
|
975 |
LVT_Hash* entry = table[index];
|
|
976 |
|
|
977 |
/*
|
|
978 |
* 3-tuple start_bci/length/slot has to be unique key,
|
|
979 |
* so the following comparison seems to be redundant:
|
|
980 |
* && elem->name_cp_index == entry->_elem->name_cp_index
|
|
981 |
*/
|
|
982 |
while (entry != NULL) {
|
|
983 |
if (elem->start_bci == entry->_elem->start_bci
|
|
984 |
&& elem->length == entry->_elem->length
|
|
985 |
&& elem->name_cp_index == entry->_elem->name_cp_index
|
|
986 |
&& elem->slot == entry->_elem->slot
|
|
987 |
) {
|
|
988 |
return entry;
|
|
989 |
}
|
|
990 |
entry = entry->_next;
|
|
991 |
}
|
|
992 |
return NULL;
|
|
993 |
}
|
|
994 |
|
|
995 |
// Return false if the local variable is found in table.
|
|
996 |
// Return true if no duplicate is found.
|
|
997 |
// And local variable is added as a new entry in table.
|
|
998 |
bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) {
|
|
999 |
// First lookup for duplicates
|
|
1000 |
int index = hash(elem);
|
|
1001 |
LVT_Hash* entry = LVT_lookup(elem, index, table);
|
|
1002 |
|
|
1003 |
if (entry != NULL) {
|
|
1004 |
return false;
|
|
1005 |
}
|
|
1006 |
// No duplicate is found, allocate a new entry and fill it.
|
|
1007 |
if ((entry = new LVT_Hash()) == NULL) {
|
|
1008 |
return false;
|
|
1009 |
}
|
|
1010 |
entry->_elem = elem;
|
|
1011 |
|
|
1012 |
// Insert into hash table
|
|
1013 |
entry->_next = table[index];
|
|
1014 |
table[index] = entry;
|
|
1015 |
|
|
1016 |
return true;
|
|
1017 |
}
|
|
1018 |
|
|
1019 |
void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) {
|
|
1020 |
lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci);
|
|
1021 |
lvt->length = Bytes::get_Java_u2((u1*) &src->length);
|
|
1022 |
lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index);
|
|
1023 |
lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index);
|
|
1024 |
lvt->signature_cp_index = 0;
|
|
1025 |
lvt->slot = Bytes::get_Java_u2((u1*) &src->slot);
|
|
1026 |
}
|
|
1027 |
|
|
1028 |
// Function is used to parse both attributes:
|
|
1029 |
// LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT)
|
|
1030 |
u2* ClassFileParser::parse_localvariable_table(u4 code_length,
|
|
1031 |
u2 max_locals,
|
|
1032 |
u4 code_attribute_length,
|
|
1033 |
constantPoolHandle cp,
|
|
1034 |
u2* localvariable_table_length,
|
|
1035 |
bool isLVTT,
|
|
1036 |
TRAPS) {
|
|
1037 |
ClassFileStream* cfs = stream();
|
|
1038 |
const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable";
|
|
1039 |
*localvariable_table_length = cfs->get_u2(CHECK_NULL);
|
|
1040 |
unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2);
|
|
1041 |
// Verify local variable table attribute has right length
|
|
1042 |
if (_need_verify) {
|
|
1043 |
guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)),
|
|
1044 |
"%s has wrong length in class file %s", tbl_name, CHECK_NULL);
|
|
1045 |
}
|
|
1046 |
u2* localvariable_table_start = cfs->get_u2_buffer();
|
|
1047 |
assert(localvariable_table_start != NULL, "null local variable table");
|
|
1048 |
if (!_need_verify) {
|
|
1049 |
cfs->skip_u2_fast(size);
|
|
1050 |
} else {
|
|
1051 |
cfs->guarantee_more(size * 2, CHECK_NULL);
|
|
1052 |
for(int i = 0; i < (*localvariable_table_length); i++) {
|
|
1053 |
u2 start_pc = cfs->get_u2_fast();
|
|
1054 |
u2 length = cfs->get_u2_fast();
|
|
1055 |
u2 name_index = cfs->get_u2_fast();
|
|
1056 |
u2 descriptor_index = cfs->get_u2_fast();
|
|
1057 |
u2 index = cfs->get_u2_fast();
|
|
1058 |
// Assign to a u4 to avoid overflow
|
|
1059 |
u4 end_pc = (u4)start_pc + (u4)length;
|
|
1060 |
|
|
1061 |
if (start_pc >= code_length) {
|
|
1062 |
classfile_parse_error(
|
|
1063 |
"Invalid start_pc %u in %s in class file %s",
|
|
1064 |
start_pc, tbl_name, CHECK_NULL);
|
|
1065 |
}
|
|
1066 |
if (end_pc > code_length) {
|
|
1067 |
classfile_parse_error(
|
|
1068 |
"Invalid length %u in %s in class file %s",
|
|
1069 |
length, tbl_name, CHECK_NULL);
|
|
1070 |
}
|
|
1071 |
int cp_size = cp->length();
|
|
1072 |
guarantee_property(
|
|
1073 |
valid_cp_range(name_index, cp_size) &&
|
|
1074 |
cp->tag_at(name_index).is_utf8(),
|
|
1075 |
"Name index %u in %s has bad constant type in class file %s",
|
|
1076 |
name_index, tbl_name, CHECK_NULL);
|
|
1077 |
guarantee_property(
|
|
1078 |
valid_cp_range(descriptor_index, cp_size) &&
|
|
1079 |
cp->tag_at(descriptor_index).is_utf8(),
|
|
1080 |
"Signature index %u in %s has bad constant type in class file %s",
|
|
1081 |
descriptor_index, tbl_name, CHECK_NULL);
|
|
1082 |
|
|
1083 |
symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
1084 |
symbolHandle sig(THREAD, cp->symbol_at(descriptor_index));
|
|
1085 |
verify_legal_field_name(name, CHECK_NULL);
|
|
1086 |
u2 extra_slot = 0;
|
|
1087 |
if (!isLVTT) {
|
|
1088 |
verify_legal_field_signature(name, sig, CHECK_NULL);
|
|
1089 |
|
|
1090 |
// 4894874: check special cases for double and long local variables
|
|
1091 |
if (sig() == vmSymbols::type_signature(T_DOUBLE) ||
|
|
1092 |
sig() == vmSymbols::type_signature(T_LONG)) {
|
|
1093 |
extra_slot = 1;
|
|
1094 |
}
|
|
1095 |
}
|
|
1096 |
guarantee_property((index + extra_slot) < max_locals,
|
|
1097 |
"Invalid index %u in %s in class file %s",
|
|
1098 |
index, tbl_name, CHECK_NULL);
|
|
1099 |
}
|
|
1100 |
}
|
|
1101 |
return localvariable_table_start;
|
|
1102 |
}
|
|
1103 |
|
|
1104 |
|
|
1105 |
void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
|
|
1106 |
u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) {
|
|
1107 |
ClassFileStream* cfs = stream();
|
|
1108 |
u2 index = 0; // index in the array with long/double occupying two slots
|
|
1109 |
u4 i1 = *u1_index;
|
|
1110 |
u4 i2 = *u2_index + 1;
|
|
1111 |
for(int i = 0; i < array_length; i++) {
|
|
1112 |
u1 tag = u1_array[i1++] = cfs->get_u1(CHECK);
|
|
1113 |
index++;
|
|
1114 |
if (tag == ITEM_Long || tag == ITEM_Double) {
|
|
1115 |
index++;
|
|
1116 |
} else if (tag == ITEM_Object) {
|
|
1117 |
u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK);
|
|
1118 |
guarantee_property(valid_cp_range(class_index, cp->length()) &&
|
|
1119 |
cp->tag_at(class_index).is_unresolved_klass(),
|
|
1120 |
"Bad class index %u in StackMap in class file %s",
|
|
1121 |
class_index, CHECK);
|
|
1122 |
} else if (tag == ITEM_Uninitialized) {
|
|
1123 |
u2 offset = u2_array[i2++] = cfs->get_u2(CHECK);
|
|
1124 |
guarantee_property(
|
|
1125 |
offset < code_length,
|
|
1126 |
"Bad uninitialized type offset %u in StackMap in class file %s",
|
|
1127 |
offset, CHECK);
|
|
1128 |
} else {
|
|
1129 |
guarantee_property(
|
|
1130 |
tag <= (u1)ITEM_Uninitialized,
|
|
1131 |
"Unknown variable type %u in StackMap in class file %s",
|
|
1132 |
tag, CHECK);
|
|
1133 |
}
|
|
1134 |
}
|
|
1135 |
u2_array[*u2_index] = index;
|
|
1136 |
*u1_index = i1;
|
|
1137 |
*u2_index = i2;
|
|
1138 |
}
|
|
1139 |
|
|
1140 |
typeArrayOop ClassFileParser::parse_stackmap_table(
|
|
1141 |
u4 code_attribute_length, TRAPS) {
|
|
1142 |
if (code_attribute_length == 0)
|
|
1143 |
return NULL;
|
|
1144 |
|
|
1145 |
ClassFileStream* cfs = stream();
|
|
1146 |
u1* stackmap_table_start = cfs->get_u1_buffer();
|
|
1147 |
assert(stackmap_table_start != NULL, "null stackmap table");
|
|
1148 |
|
|
1149 |
// check code_attribute_length first
|
|
1150 |
stream()->skip_u1(code_attribute_length, CHECK_NULL);
|
|
1151 |
|
|
1152 |
if (!_need_verify && !DumpSharedSpaces) {
|
|
1153 |
return NULL;
|
|
1154 |
}
|
|
1155 |
|
|
1156 |
typeArrayOop stackmap_data =
|
|
1157 |
oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL);
|
|
1158 |
|
|
1159 |
stackmap_data->set_length(code_attribute_length);
|
|
1160 |
memcpy((void*)stackmap_data->byte_at_addr(0),
|
|
1161 |
(void*)stackmap_table_start, code_attribute_length);
|
|
1162 |
return stackmap_data;
|
|
1163 |
}
|
|
1164 |
|
|
1165 |
u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length,
|
|
1166 |
u4 method_attribute_length,
|
|
1167 |
constantPoolHandle cp, TRAPS) {
|
|
1168 |
ClassFileStream* cfs = stream();
|
|
1169 |
cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length
|
|
1170 |
*checked_exceptions_length = cfs->get_u2_fast();
|
|
1171 |
unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2);
|
|
1172 |
u2* checked_exceptions_start = cfs->get_u2_buffer();
|
|
1173 |
assert(checked_exceptions_start != NULL, "null checked exceptions");
|
|
1174 |
if (!_need_verify) {
|
|
1175 |
cfs->skip_u2_fast(size);
|
|
1176 |
} else {
|
|
1177 |
// Verify each value in the checked exception table
|
|
1178 |
u2 checked_exception;
|
|
1179 |
u2 len = *checked_exceptions_length;
|
|
1180 |
cfs->guarantee_more(2 * len, CHECK_NULL);
|
|
1181 |
for (int i = 0; i < len; i++) {
|
|
1182 |
checked_exception = cfs->get_u2_fast();
|
|
1183 |
check_property(
|
|
1184 |
valid_cp_range(checked_exception, cp->length()) &&
|
|
1185 |
cp->tag_at(checked_exception).is_klass_reference(),
|
|
1186 |
"Exception name has bad type at constant pool %u in class file %s",
|
|
1187 |
checked_exception, CHECK_NULL);
|
|
1188 |
}
|
|
1189 |
}
|
|
1190 |
// check exceptions attribute length
|
|
1191 |
if (_need_verify) {
|
|
1192 |
guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) +
|
|
1193 |
sizeof(u2) * size),
|
|
1194 |
"Exceptions attribute has wrong length in class file %s", CHECK_NULL);
|
|
1195 |
}
|
|
1196 |
return checked_exceptions_start;
|
|
1197 |
}
|
|
1198 |
|
|
1199 |
|
|
1200 |
#define MAX_ARGS_SIZE 255
|
|
1201 |
#define MAX_CODE_SIZE 65535
|
|
1202 |
#define INITIAL_MAX_LVT_NUMBER 256
|
|
1203 |
|
|
1204 |
// Note: the parse_method below is big and clunky because all parsing of the code and exceptions
|
|
1205 |
// attribute is inlined. This is curbersome to avoid since we inline most of the parts in the
|
|
1206 |
// methodOop to save footprint, so we only know the size of the resulting methodOop when the
|
|
1207 |
// entire method attribute is parsed.
|
|
1208 |
//
|
|
1209 |
// The promoted_flags parameter is used to pass relevant access_flags
|
|
1210 |
// from the method back up to the containing klass. These flag values
|
|
1211 |
// are added to klass's access_flags.
|
|
1212 |
|
|
1213 |
methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface,
|
|
1214 |
AccessFlags *promoted_flags,
|
|
1215 |
typeArrayHandle* method_annotations,
|
|
1216 |
typeArrayHandle* method_parameter_annotations,
|
|
1217 |
typeArrayHandle* method_default_annotations,
|
|
1218 |
TRAPS) {
|
|
1219 |
ClassFileStream* cfs = stream();
|
|
1220 |
methodHandle nullHandle;
|
|
1221 |
ResourceMark rm(THREAD);
|
|
1222 |
// Parse fixed parts
|
|
1223 |
cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count
|
|
1224 |
|
|
1225 |
int flags = cfs->get_u2_fast();
|
|
1226 |
u2 name_index = cfs->get_u2_fast();
|
|
1227 |
int cp_size = cp->length();
|
|
1228 |
check_property(
|
|
1229 |
valid_cp_range(name_index, cp_size) &&
|
|
1230 |
cp->tag_at(name_index).is_utf8(),
|
|
1231 |
"Illegal constant pool index %u for method name in class file %s",
|
|
1232 |
name_index, CHECK_(nullHandle));
|
|
1233 |
symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
1234 |
verify_legal_method_name(name, CHECK_(nullHandle));
|
|
1235 |
|
|
1236 |
u2 signature_index = cfs->get_u2_fast();
|
|
1237 |
guarantee_property(
|
|
1238 |
valid_cp_range(signature_index, cp_size) &&
|
|
1239 |
cp->tag_at(signature_index).is_utf8(),
|
|
1240 |
"Illegal constant pool index %u for method signature in class file %s",
|
|
1241 |
signature_index, CHECK_(nullHandle));
|
|
1242 |
symbolHandle signature(THREAD, cp->symbol_at(signature_index));
|
|
1243 |
|
|
1244 |
AccessFlags access_flags;
|
|
1245 |
if (name == vmSymbols::class_initializer_name()) {
|
|
1246 |
// We ignore the access flags for a class initializer. (JVM Spec. p. 116)
|
|
1247 |
flags = JVM_ACC_STATIC;
|
|
1248 |
} else {
|
|
1249 |
verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle));
|
|
1250 |
}
|
|
1251 |
|
|
1252 |
int args_size = -1; // only used when _need_verify is true
|
|
1253 |
if (_need_verify) {
|
|
1254 |
args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) +
|
|
1255 |
verify_legal_method_signature(name, signature, CHECK_(nullHandle));
|
|
1256 |
if (args_size > MAX_ARGS_SIZE) {
|
|
1257 |
classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle));
|
|
1258 |
}
|
|
1259 |
}
|
|
1260 |
|
|
1261 |
access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS);
|
|
1262 |
|
|
1263 |
// Default values for code and exceptions attribute elements
|
|
1264 |
u2 max_stack = 0;
|
|
1265 |
u2 max_locals = 0;
|
|
1266 |
u4 code_length = 0;
|
|
1267 |
u1* code_start = 0;
|
|
1268 |
u2 exception_table_length = 0;
|
|
1269 |
typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array());
|
|
1270 |
u2 checked_exceptions_length = 0;
|
|
1271 |
u2* checked_exceptions_start = NULL;
|
|
1272 |
CompressedLineNumberWriteStream* linenumber_table = NULL;
|
|
1273 |
int linenumber_table_length = 0;
|
|
1274 |
int total_lvt_length = 0;
|
|
1275 |
u2 lvt_cnt = 0;
|
|
1276 |
u2 lvtt_cnt = 0;
|
|
1277 |
bool lvt_allocated = false;
|
|
1278 |
u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER;
|
|
1279 |
u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER;
|
|
1280 |
u2* localvariable_table_length;
|
|
1281 |
u2** localvariable_table_start;
|
|
1282 |
u2* localvariable_type_table_length;
|
|
1283 |
u2** localvariable_type_table_start;
|
|
1284 |
bool parsed_code_attribute = false;
|
|
1285 |
bool parsed_checked_exceptions_attribute = false;
|
|
1286 |
bool parsed_stackmap_attribute = false;
|
|
1287 |
// stackmap attribute - JDK1.5
|
|
1288 |
typeArrayHandle stackmap_data;
|
|
1289 |
u2 generic_signature_index = 0;
|
|
1290 |
u1* runtime_visible_annotations = NULL;
|
|
1291 |
int runtime_visible_annotations_length = 0;
|
|
1292 |
u1* runtime_invisible_annotations = NULL;
|
|
1293 |
int runtime_invisible_annotations_length = 0;
|
|
1294 |
u1* runtime_visible_parameter_annotations = NULL;
|
|
1295 |
int runtime_visible_parameter_annotations_length = 0;
|
|
1296 |
u1* runtime_invisible_parameter_annotations = NULL;
|
|
1297 |
int runtime_invisible_parameter_annotations_length = 0;
|
|
1298 |
u1* annotation_default = NULL;
|
|
1299 |
int annotation_default_length = 0;
|
|
1300 |
|
|
1301 |
// Parse code and exceptions attribute
|
|
1302 |
u2 method_attributes_count = cfs->get_u2_fast();
|
|
1303 |
while (method_attributes_count--) {
|
|
1304 |
cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length
|
|
1305 |
u2 method_attribute_name_index = cfs->get_u2_fast();
|
|
1306 |
u4 method_attribute_length = cfs->get_u4_fast();
|
|
1307 |
check_property(
|
|
1308 |
valid_cp_range(method_attribute_name_index, cp_size) &&
|
|
1309 |
cp->tag_at(method_attribute_name_index).is_utf8(),
|
|
1310 |
"Invalid method attribute name index %u in class file %s",
|
|
1311 |
method_attribute_name_index, CHECK_(nullHandle));
|
|
1312 |
|
|
1313 |
symbolOop method_attribute_name = cp->symbol_at(method_attribute_name_index);
|
|
1314 |
if (method_attribute_name == vmSymbols::tag_code()) {
|
|
1315 |
// Parse Code attribute
|
|
1316 |
if (_need_verify) {
|
|
1317 |
guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(),
|
|
1318 |
"Code attribute in native or abstract methods in class file %s",
|
|
1319 |
CHECK_(nullHandle));
|
|
1320 |
}
|
|
1321 |
if (parsed_code_attribute) {
|
|
1322 |
classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle));
|
|
1323 |
}
|
|
1324 |
parsed_code_attribute = true;
|
|
1325 |
|
|
1326 |
// Stack size, locals size, and code size
|
|
1327 |
if (_major_version == 45 && _minor_version <= 2) {
|
|
1328 |
cfs->guarantee_more(4, CHECK_(nullHandle));
|
|
1329 |
max_stack = cfs->get_u1_fast();
|
|
1330 |
max_locals = cfs->get_u1_fast();
|
|
1331 |
code_length = cfs->get_u2_fast();
|
|
1332 |
} else {
|
|
1333 |
cfs->guarantee_more(8, CHECK_(nullHandle));
|
|
1334 |
max_stack = cfs->get_u2_fast();
|
|
1335 |
max_locals = cfs->get_u2_fast();
|
|
1336 |
code_length = cfs->get_u4_fast();
|
|
1337 |
}
|
|
1338 |
if (_need_verify) {
|
|
1339 |
guarantee_property(args_size <= max_locals,
|
|
1340 |
"Arguments can't fit into locals in class file %s", CHECK_(nullHandle));
|
|
1341 |
guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE,
|
|
1342 |
"Invalid method Code length %u in class file %s",
|
|
1343 |
code_length, CHECK_(nullHandle));
|
|
1344 |
}
|
|
1345 |
// Code pointer
|
|
1346 |
code_start = cfs->get_u1_buffer();
|
|
1347 |
assert(code_start != NULL, "null code start");
|
|
1348 |
cfs->guarantee_more(code_length, CHECK_(nullHandle));
|
|
1349 |
cfs->skip_u1_fast(code_length);
|
|
1350 |
|
|
1351 |
// Exception handler table
|
|
1352 |
cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length
|
|
1353 |
exception_table_length = cfs->get_u2_fast();
|
|
1354 |
if (exception_table_length > 0) {
|
|
1355 |
exception_handlers =
|
|
1356 |
parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle));
|
|
1357 |
}
|
|
1358 |
|
|
1359 |
// Parse additional attributes in code attribute
|
|
1360 |
cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count
|
|
1361 |
u2 code_attributes_count = cfs->get_u2_fast();
|
|
1362 |
unsigned int calculated_attribute_length = sizeof(max_stack) +
|
|
1363 |
sizeof(max_locals) +
|
|
1364 |
sizeof(code_length) +
|
|
1365 |
code_length +
|
|
1366 |
sizeof(exception_table_length) +
|
|
1367 |
sizeof(code_attributes_count) +
|
|
1368 |
exception_table_length*(sizeof(u2) /* start_pc */+
|
|
1369 |
sizeof(u2) /* end_pc */ +
|
|
1370 |
sizeof(u2) /* handler_pc */ +
|
|
1371 |
sizeof(u2) /* catch_type_index */);
|
|
1372 |
|
|
1373 |
while (code_attributes_count--) {
|
|
1374 |
cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length
|
|
1375 |
u2 code_attribute_name_index = cfs->get_u2_fast();
|
|
1376 |
u4 code_attribute_length = cfs->get_u4_fast();
|
|
1377 |
calculated_attribute_length += code_attribute_length +
|
|
1378 |
sizeof(code_attribute_name_index) +
|
|
1379 |
sizeof(code_attribute_length);
|
|
1380 |
check_property(valid_cp_range(code_attribute_name_index, cp_size) &&
|
|
1381 |
cp->tag_at(code_attribute_name_index).is_utf8(),
|
|
1382 |
"Invalid code attribute name index %u in class file %s",
|
|
1383 |
code_attribute_name_index,
|
|
1384 |
CHECK_(nullHandle));
|
|
1385 |
if (LoadLineNumberTables &&
|
|
1386 |
cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) {
|
|
1387 |
// Parse and compress line number table
|
|
1388 |
parse_linenumber_table(code_attribute_length, code_length,
|
|
1389 |
&linenumber_table, CHECK_(nullHandle));
|
|
1390 |
|
|
1391 |
} else if (LoadLocalVariableTables &&
|
|
1392 |
cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) {
|
|
1393 |
// Parse local variable table
|
|
1394 |
if (!lvt_allocated) {
|
|
1395 |
localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1396 |
THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
1397 |
localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1398 |
THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
1399 |
localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1400 |
THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
1401 |
localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1402 |
THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
1403 |
lvt_allocated = true;
|
|
1404 |
}
|
|
1405 |
if (lvt_cnt == max_lvt_cnt) {
|
|
1406 |
max_lvt_cnt <<= 1;
|
|
1407 |
REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt);
|
|
1408 |
REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt);
|
|
1409 |
}
|
|
1410 |
localvariable_table_start[lvt_cnt] =
|
|
1411 |
parse_localvariable_table(code_length,
|
|
1412 |
max_locals,
|
|
1413 |
code_attribute_length,
|
|
1414 |
cp,
|
|
1415 |
&localvariable_table_length[lvt_cnt],
|
|
1416 |
false, // is not LVTT
|
|
1417 |
CHECK_(nullHandle));
|
|
1418 |
total_lvt_length += localvariable_table_length[lvt_cnt];
|
|
1419 |
lvt_cnt++;
|
|
1420 |
} else if (LoadLocalVariableTypeTables &&
|
|
1421 |
_major_version >= JAVA_1_5_VERSION &&
|
|
1422 |
cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) {
|
|
1423 |
if (!lvt_allocated) {
|
|
1424 |
localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1425 |
THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
1426 |
localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1427 |
THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
1428 |
localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1429 |
THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
1430 |
localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1431 |
THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
1432 |
lvt_allocated = true;
|
|
1433 |
}
|
|
1434 |
// Parse local variable type table
|
|
1435 |
if (lvtt_cnt == max_lvtt_cnt) {
|
|
1436 |
max_lvtt_cnt <<= 1;
|
|
1437 |
REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt);
|
|
1438 |
REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt);
|
|
1439 |
}
|
|
1440 |
localvariable_type_table_start[lvtt_cnt] =
|
|
1441 |
parse_localvariable_table(code_length,
|
|
1442 |
max_locals,
|
|
1443 |
code_attribute_length,
|
|
1444 |
cp,
|
|
1445 |
&localvariable_type_table_length[lvtt_cnt],
|
|
1446 |
true, // is LVTT
|
|
1447 |
CHECK_(nullHandle));
|
|
1448 |
lvtt_cnt++;
|
|
1449 |
} else if (UseSplitVerifier &&
|
|
1450 |
_major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION &&
|
|
1451 |
cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) {
|
|
1452 |
// Stack map is only needed by the new verifier in JDK1.5.
|
|
1453 |
if (parsed_stackmap_attribute) {
|
|
1454 |
classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle));
|
|
1455 |
}
|
|
1456 |
typeArrayOop sm =
|
|
1457 |
parse_stackmap_table(code_attribute_length, CHECK_(nullHandle));
|
|
1458 |
stackmap_data = typeArrayHandle(THREAD, sm);
|
|
1459 |
parsed_stackmap_attribute = true;
|
|
1460 |
} else {
|
|
1461 |
// Skip unknown attributes
|
|
1462 |
cfs->skip_u1(code_attribute_length, CHECK_(nullHandle));
|
|
1463 |
}
|
|
1464 |
}
|
|
1465 |
// check method attribute length
|
|
1466 |
if (_need_verify) {
|
|
1467 |
guarantee_property(method_attribute_length == calculated_attribute_length,
|
|
1468 |
"Code segment has wrong length in class file %s", CHECK_(nullHandle));
|
|
1469 |
}
|
|
1470 |
} else if (method_attribute_name == vmSymbols::tag_exceptions()) {
|
|
1471 |
// Parse Exceptions attribute
|
|
1472 |
if (parsed_checked_exceptions_attribute) {
|
|
1473 |
classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle));
|
|
1474 |
}
|
|
1475 |
parsed_checked_exceptions_attribute = true;
|
|
1476 |
checked_exceptions_start =
|
|
1477 |
parse_checked_exceptions(&checked_exceptions_length,
|
|
1478 |
method_attribute_length,
|
|
1479 |
cp, CHECK_(nullHandle));
|
|
1480 |
} else if (method_attribute_name == vmSymbols::tag_synthetic()) {
|
|
1481 |
if (method_attribute_length != 0) {
|
|
1482 |
classfile_parse_error(
|
|
1483 |
"Invalid Synthetic method attribute length %u in class file %s",
|
|
1484 |
method_attribute_length, CHECK_(nullHandle));
|
|
1485 |
}
|
|
1486 |
// Should we check that there hasn't already been a synthetic attribute?
|
|
1487 |
access_flags.set_is_synthetic();
|
|
1488 |
} else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120
|
|
1489 |
if (method_attribute_length != 0) {
|
|
1490 |
classfile_parse_error(
|
|
1491 |
"Invalid Deprecated method attribute length %u in class file %s",
|
|
1492 |
method_attribute_length, CHECK_(nullHandle));
|
|
1493 |
}
|
|
1494 |
} else if (_major_version >= JAVA_1_5_VERSION) {
|
|
1495 |
if (method_attribute_name == vmSymbols::tag_signature()) {
|
|
1496 |
if (method_attribute_length != 2) {
|
|
1497 |
classfile_parse_error(
|
|
1498 |
"Invalid Signature attribute length %u in class file %s",
|
|
1499 |
method_attribute_length, CHECK_(nullHandle));
|
|
1500 |
}
|
|
1501 |
cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index
|
|
1502 |
generic_signature_index = cfs->get_u2_fast();
|
|
1503 |
} else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
|
|
1504 |
runtime_visible_annotations_length = method_attribute_length;
|
|
1505 |
runtime_visible_annotations = cfs->get_u1_buffer();
|
|
1506 |
assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
1507 |
cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle));
|
|
1508 |
} else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
1509 |
runtime_invisible_annotations_length = method_attribute_length;
|
|
1510 |
runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
1511 |
assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
1512 |
cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle));
|
|
1513 |
} else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) {
|
|
1514 |
runtime_visible_parameter_annotations_length = method_attribute_length;
|
|
1515 |
runtime_visible_parameter_annotations = cfs->get_u1_buffer();
|
|
1516 |
assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations");
|
|
1517 |
cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle));
|
|
1518 |
} else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) {
|
|
1519 |
runtime_invisible_parameter_annotations_length = method_attribute_length;
|
|
1520 |
runtime_invisible_parameter_annotations = cfs->get_u1_buffer();
|
|
1521 |
assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations");
|
|
1522 |
cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle));
|
|
1523 |
} else if (method_attribute_name == vmSymbols::tag_annotation_default()) {
|
|
1524 |
annotation_default_length = method_attribute_length;
|
|
1525 |
annotation_default = cfs->get_u1_buffer();
|
|
1526 |
assert(annotation_default != NULL, "null annotation default");
|
|
1527 |
cfs->skip_u1(annotation_default_length, CHECK_(nullHandle));
|
|
1528 |
} else {
|
|
1529 |
// Skip unknown attributes
|
|
1530 |
cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
|
|
1531 |
}
|
|
1532 |
} else {
|
|
1533 |
// Skip unknown attributes
|
|
1534 |
cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
|
|
1535 |
}
|
|
1536 |
}
|
|
1537 |
|
|
1538 |
if (linenumber_table != NULL) {
|
|
1539 |
linenumber_table->write_terminator();
|
|
1540 |
linenumber_table_length = linenumber_table->position();
|
|
1541 |
}
|
|
1542 |
|
|
1543 |
// Make sure there's at least one Code attribute in non-native/non-abstract method
|
|
1544 |
if (_need_verify) {
|
|
1545 |
guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute,
|
|
1546 |
"Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle));
|
|
1547 |
}
|
|
1548 |
|
|
1549 |
// All sizing information for a methodOop is finally available, now create it
|
|
1550 |
methodOop m_oop = oopFactory::new_method(
|
|
1551 |
code_length, access_flags, linenumber_table_length,
|
|
1552 |
total_lvt_length, checked_exceptions_length, CHECK_(nullHandle));
|
|
1553 |
methodHandle m (THREAD, m_oop);
|
|
1554 |
|
|
1555 |
ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize);
|
|
1556 |
|
|
1557 |
// Fill in information from fixed part (access_flags already set)
|
|
1558 |
m->set_constants(cp());
|
|
1559 |
m->set_name_index(name_index);
|
|
1560 |
m->set_signature_index(signature_index);
|
|
1561 |
m->set_generic_signature_index(generic_signature_index);
|
|
1562 |
#ifdef CC_INTERP
|
|
1563 |
// hmm is there a gc issue here??
|
|
1564 |
ResultTypeFinder rtf(cp->symbol_at(signature_index));
|
|
1565 |
m->set_result_index(rtf.type());
|
|
1566 |
#endif
|
|
1567 |
|
|
1568 |
if (args_size >= 0) {
|
|
1569 |
m->set_size_of_parameters(args_size);
|
|
1570 |
} else {
|
|
1571 |
m->compute_size_of_parameters(THREAD);
|
|
1572 |
}
|
|
1573 |
#ifdef ASSERT
|
|
1574 |
if (args_size >= 0) {
|
|
1575 |
m->compute_size_of_parameters(THREAD);
|
|
1576 |
assert(args_size == m->size_of_parameters(), "");
|
|
1577 |
}
|
|
1578 |
#endif
|
|
1579 |
|
|
1580 |
// Fill in code attribute information
|
|
1581 |
m->set_max_stack(max_stack);
|
|
1582 |
m->set_max_locals(max_locals);
|
|
1583 |
m->constMethod()->set_stackmap_data(stackmap_data());
|
|
1584 |
|
|
1585 |
/**
|
|
1586 |
* The exception_table field is the flag used to indicate
|
|
1587 |
* that the methodOop and it's associated constMethodOop are partially
|
|
1588 |
* initialized and thus are exempt from pre/post GC verification. Once
|
|
1589 |
* the field is set, the oops are considered fully initialized so make
|
|
1590 |
* sure that the oops can pass verification when this field is set.
|
|
1591 |
*/
|
|
1592 |
m->set_exception_table(exception_handlers());
|
|
1593 |
|
|
1594 |
// Copy byte codes
|
|
1595 |
if (code_length > 0) {
|
|
1596 |
memcpy(m->code_base(), code_start, code_length);
|
|
1597 |
}
|
|
1598 |
|
|
1599 |
// Copy line number table
|
|
1600 |
if (linenumber_table != NULL) {
|
|
1601 |
memcpy(m->compressed_linenumber_table(),
|
|
1602 |
linenumber_table->buffer(), linenumber_table_length);
|
|
1603 |
}
|
|
1604 |
|
|
1605 |
// Copy checked exceptions
|
|
1606 |
if (checked_exceptions_length > 0) {
|
|
1607 |
int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2);
|
|
1608 |
copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size);
|
|
1609 |
}
|
|
1610 |
|
|
1611 |
/* Copy class file LVT's/LVTT's into the HotSpot internal LVT.
|
|
1612 |
*
|
|
1613 |
* Rules for LVT's and LVTT's are:
|
|
1614 |
* - There can be any number of LVT's and LVTT's.
|
|
1615 |
* - If there are n LVT's, it is the same as if there was just
|
|
1616 |
* one LVT containing all the entries from the n LVT's.
|
|
1617 |
* - There may be no more than one LVT entry per local variable.
|
|
1618 |
* Two LVT entries are 'equal' if these fields are the same:
|
|
1619 |
* start_pc, length, name, slot
|
|
1620 |
* - There may be no more than one LVTT entry per each LVT entry.
|
|
1621 |
* Each LVTT entry has to match some LVT entry.
|
|
1622 |
* - HotSpot internal LVT keeps natural ordering of class file LVT entries.
|
|
1623 |
*/
|
|
1624 |
if (total_lvt_length > 0) {
|
|
1625 |
int tbl_no, idx;
|
|
1626 |
|
|
1627 |
promoted_flags->set_has_localvariable_table();
|
|
1628 |
|
|
1629 |
LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE);
|
|
1630 |
initialize_hashtable(lvt_Hash);
|
|
1631 |
|
|
1632 |
// To fill LocalVariableTable in
|
|
1633 |
Classfile_LVT_Element* cf_lvt;
|
|
1634 |
LocalVariableTableElement* lvt = m->localvariable_table_start();
|
|
1635 |
|
|
1636 |
for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) {
|
|
1637 |
cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no];
|
|
1638 |
for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) {
|
|
1639 |
copy_lvt_element(&cf_lvt[idx], lvt);
|
|
1640 |
// If no duplicates, add LVT elem in hashtable lvt_Hash.
|
|
1641 |
if (LVT_put_after_lookup(lvt, lvt_Hash) == false
|
|
1642 |
&& _need_verify
|
|
1643 |
&& _major_version >= JAVA_1_5_VERSION ) {
|
|
1644 |
clear_hashtable(lvt_Hash);
|
|
1645 |
classfile_parse_error("Duplicated LocalVariableTable attribute "
|
|
1646 |
"entry for '%s' in class file %s",
|
|
1647 |
cp->symbol_at(lvt->name_cp_index)->as_utf8(),
|
|
1648 |
CHECK_(nullHandle));
|
|
1649 |
}
|
|
1650 |
}
|
|
1651 |
}
|
|
1652 |
|
|
1653 |
// To merge LocalVariableTable and LocalVariableTypeTable
|
|
1654 |
Classfile_LVT_Element* cf_lvtt;
|
|
1655 |
LocalVariableTableElement lvtt_elem;
|
|
1656 |
|
|
1657 |
for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) {
|
|
1658 |
cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no];
|
|
1659 |
for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) {
|
|
1660 |
copy_lvt_element(&cf_lvtt[idx], &lvtt_elem);
|
|
1661 |
int index = hash(&lvtt_elem);
|
|
1662 |
LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash);
|
|
1663 |
if (entry == NULL) {
|
|
1664 |
if (_need_verify) {
|
|
1665 |
clear_hashtable(lvt_Hash);
|
|
1666 |
classfile_parse_error("LVTT entry for '%s' in class file %s "
|
|
1667 |
"does not match any LVT entry",
|
|
1668 |
cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
|
|
1669 |
CHECK_(nullHandle));
|
|
1670 |
}
|
|
1671 |
} else if (entry->_elem->signature_cp_index != 0 && _need_verify) {
|
|
1672 |
clear_hashtable(lvt_Hash);
|
|
1673 |
classfile_parse_error("Duplicated LocalVariableTypeTable attribute "
|
|
1674 |
"entry for '%s' in class file %s",
|
|
1675 |
cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
|
|
1676 |
CHECK_(nullHandle));
|
|
1677 |
} else {
|
|
1678 |
// to add generic signatures into LocalVariableTable
|
|
1679 |
entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index;
|
|
1680 |
}
|
|
1681 |
}
|
|
1682 |
}
|
|
1683 |
clear_hashtable(lvt_Hash);
|
|
1684 |
}
|
|
1685 |
|
|
1686 |
*method_annotations = assemble_annotations(runtime_visible_annotations,
|
|
1687 |
runtime_visible_annotations_length,
|
|
1688 |
runtime_invisible_annotations,
|
|
1689 |
runtime_invisible_annotations_length,
|
|
1690 |
CHECK_(nullHandle));
|
|
1691 |
*method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations,
|
|
1692 |
runtime_visible_parameter_annotations_length,
|
|
1693 |
runtime_invisible_parameter_annotations,
|
|
1694 |
runtime_invisible_parameter_annotations_length,
|
|
1695 |
CHECK_(nullHandle));
|
|
1696 |
*method_default_annotations = assemble_annotations(annotation_default,
|
|
1697 |
annotation_default_length,
|
|
1698 |
NULL,
|
|
1699 |
0,
|
|
1700 |
CHECK_(nullHandle));
|
|
1701 |
|
|
1702 |
if (name() == vmSymbols::finalize_method_name() &&
|
|
1703 |
signature() == vmSymbols::void_method_signature()) {
|
|
1704 |
if (m->is_empty_method()) {
|
|
1705 |
_has_empty_finalizer = true;
|
|
1706 |
} else {
|
|
1707 |
_has_finalizer = true;
|
|
1708 |
}
|
|
1709 |
}
|
|
1710 |
if (name() == vmSymbols::object_initializer_name() &&
|
|
1711 |
signature() == vmSymbols::void_method_signature() &&
|
|
1712 |
m->is_vanilla_constructor()) {
|
|
1713 |
_has_vanilla_constructor = true;
|
|
1714 |
}
|
|
1715 |
|
|
1716 |
return m;
|
|
1717 |
}
|
|
1718 |
|
|
1719 |
|
|
1720 |
// The promoted_flags parameter is used to pass relevant access_flags
|
|
1721 |
// from the methods back up to the containing klass. These flag values
|
|
1722 |
// are added to klass's access_flags.
|
|
1723 |
|
|
1724 |
objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface,
|
|
1725 |
AccessFlags* promoted_flags,
|
|
1726 |
bool* has_final_method,
|
|
1727 |
objArrayOop* methods_annotations_oop,
|
|
1728 |
objArrayOop* methods_parameter_annotations_oop,
|
|
1729 |
objArrayOop* methods_default_annotations_oop,
|
|
1730 |
TRAPS) {
|
|
1731 |
ClassFileStream* cfs = stream();
|
|
1732 |
objArrayHandle nullHandle;
|
|
1733 |
typeArrayHandle method_annotations;
|
|
1734 |
typeArrayHandle method_parameter_annotations;
|
|
1735 |
typeArrayHandle method_default_annotations;
|
|
1736 |
cfs->guarantee_more(2, CHECK_(nullHandle)); // length
|
|
1737 |
u2 length = cfs->get_u2_fast();
|
|
1738 |
if (length == 0) {
|
|
1739 |
return objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
1740 |
} else {
|
|
1741 |
objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
1742 |
objArrayHandle methods(THREAD, m);
|
|
1743 |
HandleMark hm(THREAD);
|
|
1744 |
objArrayHandle methods_annotations;
|
|
1745 |
objArrayHandle methods_parameter_annotations;
|
|
1746 |
objArrayHandle methods_default_annotations;
|
|
1747 |
for (int index = 0; index < length; index++) {
|
|
1748 |
methodHandle method = parse_method(cp, is_interface,
|
|
1749 |
promoted_flags,
|
|
1750 |
&method_annotations,
|
|
1751 |
&method_parameter_annotations,
|
|
1752 |
&method_default_annotations,
|
|
1753 |
CHECK_(nullHandle));
|
|
1754 |
if (method->is_final()) {
|
|
1755 |
*has_final_method = true;
|
|
1756 |
}
|
|
1757 |
methods->obj_at_put(index, method());
|
|
1758 |
if (method_annotations.not_null()) {
|
|
1759 |
if (methods_annotations.is_null()) {
|
|
1760 |
objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
1761 |
methods_annotations = objArrayHandle(THREAD, md);
|
|
1762 |
}
|
|
1763 |
methods_annotations->obj_at_put(index, method_annotations());
|
|
1764 |
}
|
|
1765 |
if (method_parameter_annotations.not_null()) {
|
|
1766 |
if (methods_parameter_annotations.is_null()) {
|
|
1767 |
objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
1768 |
methods_parameter_annotations = objArrayHandle(THREAD, md);
|
|
1769 |
}
|
|
1770 |
methods_parameter_annotations->obj_at_put(index, method_parameter_annotations());
|
|
1771 |
}
|
|
1772 |
if (method_default_annotations.not_null()) {
|
|
1773 |
if (methods_default_annotations.is_null()) {
|
|
1774 |
objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
1775 |
methods_default_annotations = objArrayHandle(THREAD, md);
|
|
1776 |
}
|
|
1777 |
methods_default_annotations->obj_at_put(index, method_default_annotations());
|
|
1778 |
}
|
|
1779 |
}
|
|
1780 |
if (_need_verify && length > 1) {
|
|
1781 |
// Check duplicated methods
|
|
1782 |
ResourceMark rm(THREAD);
|
|
1783 |
NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
1784 |
THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
1785 |
initialize_hashtable(names_and_sigs);
|
|
1786 |
bool dup = false;
|
|
1787 |
{
|
|
1788 |
debug_only(No_Safepoint_Verifier nsv;)
|
|
1789 |
for (int i = 0; i < length; i++) {
|
|
1790 |
methodOop m = (methodOop)methods->obj_at(i);
|
|
1791 |
// If no duplicates, add name/signature in hashtable names_and_sigs.
|
|
1792 |
if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) {
|
|
1793 |
dup = true;
|
|
1794 |
break;
|
|
1795 |
}
|
|
1796 |
}
|
|
1797 |
}
|
|
1798 |
if (dup) {
|
|
1799 |
classfile_parse_error("Duplicate method name&signature in class file %s",
|
|
1800 |
CHECK_(nullHandle));
|
|
1801 |
}
|
|
1802 |
}
|
|
1803 |
|
|
1804 |
*methods_annotations_oop = methods_annotations();
|
|
1805 |
*methods_parameter_annotations_oop = methods_parameter_annotations();
|
|
1806 |
*methods_default_annotations_oop = methods_default_annotations();
|
|
1807 |
|
|
1808 |
return methods;
|
|
1809 |
}
|
|
1810 |
}
|
|
1811 |
|
|
1812 |
|
|
1813 |
typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods,
|
|
1814 |
objArrayHandle methods_annotations,
|
|
1815 |
objArrayHandle methods_parameter_annotations,
|
|
1816 |
objArrayHandle methods_default_annotations,
|
|
1817 |
TRAPS) {
|
|
1818 |
typeArrayHandle nullHandle;
|
|
1819 |
int length = methods()->length();
|
|
1820 |
// If JVMTI original method ordering is enabled we have to
|
|
1821 |
// remember the original class file ordering.
|
|
1822 |
// We temporarily use the vtable_index field in the methodOop to store the
|
|
1823 |
// class file index, so we can read in after calling qsort.
|
|
1824 |
if (JvmtiExport::can_maintain_original_method_order()) {
|
|
1825 |
for (int index = 0; index < length; index++) {
|
|
1826 |
methodOop m = methodOop(methods->obj_at(index));
|
|
1827 |
assert(!m->valid_vtable_index(), "vtable index should not be set");
|
|
1828 |
m->set_vtable_index(index);
|
|
1829 |
}
|
|
1830 |
}
|
|
1831 |
// Sort method array by ascending method name (for faster lookups & vtable construction)
|
|
1832 |
// Note that the ordering is not alphabetical, see symbolOopDesc::fast_compare
|
|
1833 |
methodOopDesc::sort_methods(methods(),
|
|
1834 |
methods_annotations(),
|
|
1835 |
methods_parameter_annotations(),
|
|
1836 |
methods_default_annotations());
|
|
1837 |
|
|
1838 |
// If JVMTI original method ordering is enabled construct int array remembering the original ordering
|
|
1839 |
if (JvmtiExport::can_maintain_original_method_order()) {
|
|
1840 |
typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle));
|
|
1841 |
typeArrayHandle method_ordering(THREAD, new_ordering);
|
|
1842 |
for (int index = 0; index < length; index++) {
|
|
1843 |
methodOop m = methodOop(methods->obj_at(index));
|
|
1844 |
int old_index = m->vtable_index();
|
|
1845 |
assert(old_index >= 0 && old_index < length, "invalid method index");
|
|
1846 |
method_ordering->int_at_put(index, old_index);
|
|
1847 |
m->set_vtable_index(methodOopDesc::invalid_vtable_index);
|
|
1848 |
}
|
|
1849 |
return method_ordering;
|
|
1850 |
} else {
|
|
1851 |
return typeArrayHandle(THREAD, Universe::the_empty_int_array());
|
|
1852 |
}
|
|
1853 |
}
|
|
1854 |
|
|
1855 |
|
|
1856 |
void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
1857 |
ClassFileStream* cfs = stream();
|
|
1858 |
cfs->guarantee_more(2, CHECK); // sourcefile_index
|
|
1859 |
u2 sourcefile_index = cfs->get_u2_fast();
|
|
1860 |
check_property(
|
|
1861 |
valid_cp_range(sourcefile_index, cp->length()) &&
|
|
1862 |
cp->tag_at(sourcefile_index).is_utf8(),
|
|
1863 |
"Invalid SourceFile attribute at constant pool index %u in class file %s",
|
|
1864 |
sourcefile_index, CHECK);
|
|
1865 |
k->set_source_file_name(cp->symbol_at(sourcefile_index));
|
|
1866 |
}
|
|
1867 |
|
|
1868 |
|
|
1869 |
|
|
1870 |
void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
|
|
1871 |
instanceKlassHandle k,
|
|
1872 |
int length, TRAPS) {
|
|
1873 |
ClassFileStream* cfs = stream();
|
|
1874 |
u1* sde_buffer = cfs->get_u1_buffer();
|
|
1875 |
assert(sde_buffer != NULL, "null sde buffer");
|
|
1876 |
|
|
1877 |
// Don't bother storing it if there is no way to retrieve it
|
|
1878 |
if (JvmtiExport::can_get_source_debug_extension()) {
|
|
1879 |
// Optimistically assume that only 1 byte UTF format is used
|
|
1880 |
// (common case)
|
|
1881 |
symbolOop sde_symbol = oopFactory::new_symbol((char*)sde_buffer,
|
|
1882 |
length, CHECK);
|
|
1883 |
k->set_source_debug_extension(sde_symbol);
|
|
1884 |
}
|
|
1885 |
// Got utf8 string, set stream position forward
|
|
1886 |
cfs->skip_u1(length, CHECK);
|
|
1887 |
}
|
|
1888 |
|
|
1889 |
|
|
1890 |
// Inner classes can be static, private or protected (classic VM does this)
|
|
1891 |
#define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC)
|
|
1892 |
|
|
1893 |
// Return number of classes in the inner classes attribute table
|
|
1894 |
u2 ClassFileParser::parse_classfile_inner_classes_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
1895 |
ClassFileStream* cfs = stream();
|
|
1896 |
cfs->guarantee_more(2, CHECK_0); // length
|
|
1897 |
u2 length = cfs->get_u2_fast();
|
|
1898 |
|
|
1899 |
// 4-tuples of shorts [inner_class_info_index, outer_class_info_index, inner_name_index, inner_class_access_flags]
|
|
1900 |
typeArrayOop ic = oopFactory::new_permanent_shortArray(length*4, CHECK_0);
|
|
1901 |
typeArrayHandle inner_classes(THREAD, ic);
|
|
1902 |
int index = 0;
|
|
1903 |
int cp_size = cp->length();
|
|
1904 |
cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2
|
|
1905 |
for (int n = 0; n < length; n++) {
|
|
1906 |
// Inner class index
|
|
1907 |
u2 inner_class_info_index = cfs->get_u2_fast();
|
|
1908 |
check_property(
|
|
1909 |
inner_class_info_index == 0 ||
|
|
1910 |
(valid_cp_range(inner_class_info_index, cp_size) &&
|
|
1911 |
cp->tag_at(inner_class_info_index).is_klass_reference()),
|
|
1912 |
"inner_class_info_index %u has bad constant type in class file %s",
|
|
1913 |
inner_class_info_index, CHECK_0);
|
|
1914 |
// Outer class index
|
|
1915 |
u2 outer_class_info_index = cfs->get_u2_fast();
|
|
1916 |
check_property(
|
|
1917 |
outer_class_info_index == 0 ||
|
|
1918 |
(valid_cp_range(outer_class_info_index, cp_size) &&
|
|
1919 |
cp->tag_at(outer_class_info_index).is_klass_reference()),
|
|
1920 |
"outer_class_info_index %u has bad constant type in class file %s",
|
|
1921 |
outer_class_info_index, CHECK_0);
|
|
1922 |
// Inner class name
|
|
1923 |
u2 inner_name_index = cfs->get_u2_fast();
|
|
1924 |
check_property(
|
|
1925 |
inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) &&
|
|
1926 |
cp->tag_at(inner_name_index).is_utf8()),
|
|
1927 |
"inner_name_index %u has bad constant type in class file %s",
|
|
1928 |
inner_name_index, CHECK_0);
|
|
1929 |
if (_need_verify) {
|
|
1930 |
guarantee_property(inner_class_info_index != outer_class_info_index,
|
|
1931 |
"Class is both outer and inner class in class file %s", CHECK_0);
|
|
1932 |
}
|
|
1933 |
// Access flags
|
|
1934 |
AccessFlags inner_access_flags;
|
|
1935 |
jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS;
|
|
1936 |
if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
|
|
1937 |
// Set abstract bit for old class files for backward compatibility
|
|
1938 |
flags |= JVM_ACC_ABSTRACT;
|
|
1939 |
}
|
|
1940 |
verify_legal_class_modifiers(flags, CHECK_0);
|
|
1941 |
inner_access_flags.set_flags(flags);
|
|
1942 |
|
|
1943 |
inner_classes->short_at_put(index++, inner_class_info_index);
|
|
1944 |
inner_classes->short_at_put(index++, outer_class_info_index);
|
|
1945 |
inner_classes->short_at_put(index++, inner_name_index);
|
|
1946 |
inner_classes->short_at_put(index++, inner_access_flags.as_short());
|
|
1947 |
}
|
|
1948 |
|
|
1949 |
// 4347400: make sure there's no duplicate entry in the classes array
|
|
1950 |
if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
|
|
1951 |
for(int i = 0; i < inner_classes->length(); i += 4) {
|
|
1952 |
for(int j = i + 4; j < inner_classes->length(); j += 4) {
|
|
1953 |
guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) ||
|
|
1954 |
inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) ||
|
|
1955 |
inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) ||
|
|
1956 |
inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)),
|
|
1957 |
"Duplicate entry in InnerClasses in class file %s",
|
|
1958 |
CHECK_0);
|
|
1959 |
}
|
|
1960 |
}
|
|
1961 |
}
|
|
1962 |
|
|
1963 |
// Update instanceKlass with inner class info.
|
|
1964 |
k->set_inner_classes(inner_classes());
|
|
1965 |
return length;
|
|
1966 |
}
|
|
1967 |
|
|
1968 |
void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
1969 |
k->set_is_synthetic();
|
|
1970 |
}
|
|
1971 |
|
|
1972 |
void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
1973 |
ClassFileStream* cfs = stream();
|
|
1974 |
u2 signature_index = cfs->get_u2(CHECK);
|
|
1975 |
check_property(
|
|
1976 |
valid_cp_range(signature_index, cp->length()) &&
|
|
1977 |
cp->tag_at(signature_index).is_utf8(),
|
|
1978 |
"Invalid constant pool index %u in Signature attribute in class file %s",
|
|
1979 |
signature_index, CHECK);
|
|
1980 |
k->set_generic_signature(cp->symbol_at(signature_index));
|
|
1981 |
}
|
|
1982 |
|
|
1983 |
void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
1984 |
ClassFileStream* cfs = stream();
|
|
1985 |
// Set inner classes attribute to default sentinel
|
|
1986 |
k->set_inner_classes(Universe::the_empty_short_array());
|
|
1987 |
cfs->guarantee_more(2, CHECK); // attributes_count
|
|
1988 |
u2 attributes_count = cfs->get_u2_fast();
|
|
1989 |
bool parsed_sourcefile_attribute = false;
|
|
1990 |
bool parsed_innerclasses_attribute = false;
|
|
1991 |
bool parsed_enclosingmethod_attribute = false;
|
|
1992 |
u1* runtime_visible_annotations = NULL;
|
|
1993 |
int runtime_visible_annotations_length = 0;
|
|
1994 |
u1* runtime_invisible_annotations = NULL;
|
|
1995 |
int runtime_invisible_annotations_length = 0;
|
|
1996 |
// Iterate over attributes
|
|
1997 |
while (attributes_count--) {
|
|
1998 |
cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length
|
|
1999 |
u2 attribute_name_index = cfs->get_u2_fast();
|
|
2000 |
u4 attribute_length = cfs->get_u4_fast();
|
|
2001 |
check_property(
|
|
2002 |
valid_cp_range(attribute_name_index, cp->length()) &&
|
|
2003 |
cp->tag_at(attribute_name_index).is_utf8(),
|
|
2004 |
"Attribute name has bad constant pool index %u in class file %s",
|
|
2005 |
attribute_name_index, CHECK);
|
|
2006 |
symbolOop tag = cp->symbol_at(attribute_name_index);
|
|
2007 |
if (tag == vmSymbols::tag_source_file()) {
|
|
2008 |
// Check for SourceFile tag
|
|
2009 |
if (_need_verify) {
|
|
2010 |
guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK);
|
|
2011 |
}
|
|
2012 |
if (parsed_sourcefile_attribute) {
|
|
2013 |
classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK);
|
|
2014 |
} else {
|
|
2015 |
parsed_sourcefile_attribute = true;
|
|
2016 |
}
|
|
2017 |
parse_classfile_sourcefile_attribute(cp, k, CHECK);
|
|
2018 |
} else if (tag == vmSymbols::tag_source_debug_extension()) {
|
|
2019 |
// Check for SourceDebugExtension tag
|
|
2020 |
parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK);
|
|
2021 |
} else if (tag == vmSymbols::tag_inner_classes()) {
|
|
2022 |
// Check for InnerClasses tag
|
|
2023 |
if (parsed_innerclasses_attribute) {
|
|
2024 |
classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK);
|
|
2025 |
} else {
|
|
2026 |
parsed_innerclasses_attribute = true;
|
|
2027 |
}
|
|
2028 |
u2 num_of_classes = parse_classfile_inner_classes_attribute(cp, k, CHECK);
|
|
2029 |
if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
|
|
2030 |
guarantee_property(attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes,
|
|
2031 |
"Wrong InnerClasses attribute length in class file %s", CHECK);
|
|
2032 |
}
|
|
2033 |
} else if (tag == vmSymbols::tag_synthetic()) {
|
|
2034 |
// Check for Synthetic tag
|
|
2035 |
// Shouldn't we check that the synthetic flags wasn't already set? - not required in spec
|
|
2036 |
if (attribute_length != 0) {
|
|
2037 |
classfile_parse_error(
|
|
2038 |
"Invalid Synthetic classfile attribute length %u in class file %s",
|
|
2039 |
attribute_length, CHECK);
|
|
2040 |
}
|
|
2041 |
parse_classfile_synthetic_attribute(cp, k, CHECK);
|
|
2042 |
} else if (tag == vmSymbols::tag_deprecated()) {
|
|
2043 |
// Check for Deprecatd tag - 4276120
|
|
2044 |
if (attribute_length != 0) {
|
|
2045 |
classfile_parse_error(
|
|
2046 |
"Invalid Deprecated classfile attribute length %u in class file %s",
|
|
2047 |
attribute_length, CHECK);
|
|
2048 |
}
|
|
2049 |
} else if (_major_version >= JAVA_1_5_VERSION) {
|
|
2050 |
if (tag == vmSymbols::tag_signature()) {
|
|
2051 |
if (attribute_length != 2) {
|
|
2052 |
classfile_parse_error(
|
|
2053 |
"Wrong Signature attribute length %u in class file %s",
|
|
2054 |
attribute_length, CHECK);
|
|
2055 |
}
|
|
2056 |
parse_classfile_signature_attribute(cp, k, CHECK);
|
|
2057 |
} else if (tag == vmSymbols::tag_runtime_visible_annotations()) {
|
|
2058 |
runtime_visible_annotations_length = attribute_length;
|
|
2059 |
runtime_visible_annotations = cfs->get_u1_buffer();
|
|
2060 |
assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
2061 |
cfs->skip_u1(runtime_visible_annotations_length, CHECK);
|
|
2062 |
} else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
2063 |
runtime_invisible_annotations_length = attribute_length;
|
|
2064 |
runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
2065 |
assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
2066 |
cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
|
|
2067 |
} else if (tag == vmSymbols::tag_enclosing_method()) {
|
|
2068 |
if (parsed_enclosingmethod_attribute) {
|
|
2069 |
classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK);
|
|
2070 |
} else {
|
|
2071 |
parsed_enclosingmethod_attribute = true;
|
|
2072 |
}
|
|
2073 |
cfs->guarantee_more(4, CHECK); // class_index, method_index
|
|
2074 |
u2 class_index = cfs->get_u2_fast();
|
|
2075 |
u2 method_index = cfs->get_u2_fast();
|
|
2076 |
if (class_index == 0) {
|
|
2077 |
classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK);
|
|
2078 |
}
|
|
2079 |
// Validate the constant pool indices and types
|
|
2080 |
if (!cp->is_within_bounds(class_index) ||
|
|
2081 |
!cp->tag_at(class_index).is_klass_reference()) {
|
|
2082 |
classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK);
|
|
2083 |
}
|
|
2084 |
if (method_index != 0 &&
|
|
2085 |
(!cp->is_within_bounds(method_index) ||
|
|
2086 |
!cp->tag_at(method_index).is_name_and_type())) {
|
|
2087 |
classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK);
|
|
2088 |
}
|
|
2089 |
k->set_enclosing_method_indices(class_index, method_index);
|
|
2090 |
} else {
|
|
2091 |
// Unknown attribute
|
|
2092 |
cfs->skip_u1(attribute_length, CHECK);
|
|
2093 |
}
|
|
2094 |
} else {
|
|
2095 |
// Unknown attribute
|
|
2096 |
cfs->skip_u1(attribute_length, CHECK);
|
|
2097 |
}
|
|
2098 |
}
|
|
2099 |
typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations,
|
|
2100 |
runtime_visible_annotations_length,
|
|
2101 |
runtime_invisible_annotations,
|
|
2102 |
runtime_invisible_annotations_length,
|
|
2103 |
CHECK);
|
|
2104 |
k->set_class_annotations(annotations());
|
|
2105 |
}
|
|
2106 |
|
|
2107 |
|
|
2108 |
typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations,
|
|
2109 |
int runtime_visible_annotations_length,
|
|
2110 |
u1* runtime_invisible_annotations,
|
|
2111 |
int runtime_invisible_annotations_length, TRAPS) {
|
|
2112 |
typeArrayHandle annotations;
|
|
2113 |
if (runtime_visible_annotations != NULL ||
|
|
2114 |
runtime_invisible_annotations != NULL) {
|
|
2115 |
typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length +
|
|
2116 |
runtime_invisible_annotations_length, CHECK_(annotations));
|
|
2117 |
annotations = typeArrayHandle(THREAD, anno);
|
|
2118 |
if (runtime_visible_annotations != NULL) {
|
|
2119 |
memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length);
|
|
2120 |
}
|
|
2121 |
if (runtime_invisible_annotations != NULL) {
|
|
2122 |
memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length);
|
|
2123 |
}
|
|
2124 |
}
|
|
2125 |
return annotations;
|
|
2126 |
}
|
|
2127 |
|
|
2128 |
|
|
2129 |
static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
|
|
2130 |
KlassHandle h_k (THREAD, fd->field_holder());
|
|
2131 |
assert(h_k.not_null() && fd->is_static(), "just checking");
|
|
2132 |
if (fd->has_initial_value()) {
|
|
2133 |
BasicType t = fd->field_type();
|
|
2134 |
switch (t) {
|
|
2135 |
case T_BYTE:
|
|
2136 |
h_k()->byte_field_put(fd->offset(), fd->int_initial_value());
|
|
2137 |
break;
|
|
2138 |
case T_BOOLEAN:
|
|
2139 |
h_k()->bool_field_put(fd->offset(), fd->int_initial_value());
|
|
2140 |
break;
|
|
2141 |
case T_CHAR:
|
|
2142 |
h_k()->char_field_put(fd->offset(), fd->int_initial_value());
|
|
2143 |
break;
|
|
2144 |
case T_SHORT:
|
|
2145 |
h_k()->short_field_put(fd->offset(), fd->int_initial_value());
|
|
2146 |
break;
|
|
2147 |
case T_INT:
|
|
2148 |
h_k()->int_field_put(fd->offset(), fd->int_initial_value());
|
|
2149 |
break;
|
|
2150 |
case T_FLOAT:
|
|
2151 |
h_k()->float_field_put(fd->offset(), fd->float_initial_value());
|
|
2152 |
break;
|
|
2153 |
case T_DOUBLE:
|
|
2154 |
h_k()->double_field_put(fd->offset(), fd->double_initial_value());
|
|
2155 |
break;
|
|
2156 |
case T_LONG:
|
|
2157 |
h_k()->long_field_put(fd->offset(), fd->long_initial_value());
|
|
2158 |
break;
|
|
2159 |
case T_OBJECT:
|
|
2160 |
{
|
|
2161 |
#ifdef ASSERT
|
|
2162 |
symbolOop sym = oopFactory::new_symbol("Ljava/lang/String;", CHECK);
|
|
2163 |
assert(fd->signature() == sym, "just checking");
|
|
2164 |
#endif
|
|
2165 |
oop string = fd->string_initial_value(CHECK);
|
|
2166 |
h_k()->obj_field_put(fd->offset(), string);
|
|
2167 |
}
|
|
2168 |
break;
|
|
2169 |
default:
|
|
2170 |
THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
|
|
2171 |
"Illegal ConstantValue attribute in class file");
|
|
2172 |
}
|
|
2173 |
}
|
|
2174 |
}
|
|
2175 |
|
|
2176 |
|
|
2177 |
void ClassFileParser::java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
|
|
2178 |
constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS) {
|
|
2179 |
// This code is for compatibility with earlier jdk's that do not
|
|
2180 |
// have the "discovered" field in java.lang.ref.Reference. For 1.5
|
|
2181 |
// the check for the "discovered" field should issue a warning if
|
|
2182 |
// the field is not found. For 1.6 this code should be issue a
|
|
2183 |
// fatal error if the "discovered" field is not found.
|
|
2184 |
//
|
|
2185 |
// Increment fac.nonstatic_oop_count so that the start of the
|
|
2186 |
// next type of non-static oops leaves room for the fake oop.
|
|
2187 |
// Do not increment next_nonstatic_oop_offset so that the
|
|
2188 |
// fake oop is place after the java.lang.ref.Reference oop
|
|
2189 |
// fields.
|
|
2190 |
//
|
|
2191 |
// Check the fields in java.lang.ref.Reference for the "discovered"
|
|
2192 |
// field. If it is not present, artifically create a field for it.
|
|
2193 |
// This allows this VM to run on early JDK where the field is not
|
|
2194 |
// present.
|
|
2195 |
|
|
2196 |
//
|
|
2197 |
// Increment fac.nonstatic_oop_count so that the start of the
|
|
2198 |
// next type of non-static oops leaves room for the fake oop.
|
|
2199 |
// Do not increment next_nonstatic_oop_offset so that the
|
|
2200 |
// fake oop is place after the java.lang.ref.Reference oop
|
|
2201 |
// fields.
|
|
2202 |
//
|
|
2203 |
// Check the fields in java.lang.ref.Reference for the "discovered"
|
|
2204 |
// field. If it is not present, artifically create a field for it.
|
|
2205 |
// This allows this VM to run on early JDK where the field is not
|
|
2206 |
// present.
|
|
2207 |
int reference_sig_index = 0;
|
|
2208 |
int reference_name_index = 0;
|
|
2209 |
int reference_index = 0;
|
|
2210 |
int extra = java_lang_ref_Reference::number_of_fake_oop_fields;
|
|
2211 |
const int n = (*fields_ptr)()->length();
|
|
2212 |
for (int i = 0; i < n; i += instanceKlass::next_offset ) {
|
|
2213 |
int name_index =
|
|
2214 |
(*fields_ptr)()->ushort_at(i + instanceKlass::name_index_offset);
|
|
2215 |
int sig_index =
|
|
2216 |
(*fields_ptr)()->ushort_at(i + instanceKlass::signature_index_offset);
|
|
2217 |
symbolOop f_name = cp->symbol_at(name_index);
|
|
2218 |
symbolOop f_sig = cp->symbol_at(sig_index);
|
|
2219 |
if (f_sig == vmSymbols::reference_signature() && reference_index == 0) {
|
|
2220 |
// Save the index for reference signature for later use.
|
|
2221 |
// The fake discovered field does not entries in the
|
|
2222 |
// constant pool so the index for its signature cannot
|
|
2223 |
// be extracted from the constant pool. It will need
|
|
2224 |
// later, however. It's signature is vmSymbols::reference_signature()
|
|
2225 |
// so same an index for that signature.
|
|
2226 |
reference_sig_index = sig_index;
|
|
2227 |
reference_name_index = name_index;
|
|
2228 |
reference_index = i;
|
|
2229 |
}
|
|
2230 |
if (f_name == vmSymbols::reference_discovered_name() &&
|
|
2231 |
f_sig == vmSymbols::reference_signature()) {
|
|
2232 |
// The values below are fake but will force extra
|
|
2233 |
// non-static oop fields and a corresponding non-static
|
|
2234 |
// oop map block to be allocated.
|
|
2235 |
extra = 0;
|
|
2236 |
break;
|
|
2237 |
}
|
|
2238 |
}
|
|
2239 |
if (extra != 0) {
|
|
2240 |
fac_ptr->nonstatic_oop_count += extra;
|
|
2241 |
// Add the additional entry to "fields" so that the klass
|
|
2242 |
// contains the "discoverd" field and the field will be initialized
|
|
2243 |
// in instances of the object.
|
|
2244 |
int fields_with_fix_length = (*fields_ptr)()->length() +
|
|
2245 |
instanceKlass::next_offset;
|
|
2246 |
typeArrayOop ff = oopFactory::new_permanent_shortArray(
|
|
2247 |
fields_with_fix_length, CHECK);
|
|
2248 |
typeArrayHandle fields_with_fix(THREAD, ff);
|
|
2249 |
|
|
2250 |
// Take everything from the original but the length.
|
|
2251 |
for (int idx = 0; idx < (*fields_ptr)->length(); idx++) {
|
|
2252 |
fields_with_fix->ushort_at_put(idx, (*fields_ptr)->ushort_at(idx));
|
|
2253 |
}
|
|
2254 |
|
|
2255 |
// Add the fake field at the end.
|
|
2256 |
int i = (*fields_ptr)->length();
|
|
2257 |
// There is no name index for the fake "discovered" field nor
|
|
2258 |
// signature but a signature is needed so that the field will
|
|
2259 |
// be properly initialized. Use one found for
|
|
2260 |
// one of the other reference fields. Be sure the index for the
|
|
2261 |
// name is 0. In fieldDescriptor::initialize() the index of the
|
|
2262 |
// name is checked. That check is by passed for the last nonstatic
|
|
2263 |
// oop field in a java.lang.ref.Reference which is assumed to be
|
|
2264 |
// this artificial "discovered" field. An assertion checks that
|
|
2265 |
// the name index is 0.
|
|
2266 |
assert(reference_index != 0, "Missing signature for reference");
|
|
2267 |
|
|
2268 |
int j;
|
|
2269 |
for (j = 0; j < instanceKlass::next_offset; j++) {
|
|
2270 |
fields_with_fix->ushort_at_put(i + j,
|
|
2271 |
(*fields_ptr)->ushort_at(reference_index +j));
|
|
2272 |
}
|
|
2273 |
// Clear the public access flag and set the private access flag.
|
|
2274 |
short flags;
|
|
2275 |
flags =
|
|
2276 |
fields_with_fix->ushort_at(i + instanceKlass::access_flags_offset);
|
|
2277 |
assert(!(flags & JVM_RECOGNIZED_FIELD_MODIFIERS), "Unexpected access flags set");
|
|
2278 |
flags = flags & (~JVM_ACC_PUBLIC);
|
|
2279 |
flags = flags | JVM_ACC_PRIVATE;
|
|
2280 |
AccessFlags access_flags;
|
|
2281 |
access_flags.set_flags(flags);
|
|
2282 |
assert(!access_flags.is_public(), "Failed to clear public flag");
|
|
2283 |
assert(access_flags.is_private(), "Failed to set private flag");
|
|
2284 |
fields_with_fix->ushort_at_put(i + instanceKlass::access_flags_offset,
|
|
2285 |
flags);
|
|
2286 |
|
|
2287 |
assert(fields_with_fix->ushort_at(i + instanceKlass::name_index_offset)
|
|
2288 |
== reference_name_index, "The fake reference name is incorrect");
|
|
2289 |
assert(fields_with_fix->ushort_at(i + instanceKlass::signature_index_offset)
|
|
2290 |
== reference_sig_index, "The fake reference signature is incorrect");
|
|
2291 |
// The type of the field is stored in the low_offset entry during
|
|
2292 |
// parsing.
|
|
2293 |
assert(fields_with_fix->ushort_at(i + instanceKlass::low_offset) ==
|
|
2294 |
NONSTATIC_OOP, "The fake reference type is incorrect");
|
|
2295 |
|
|
2296 |
// "fields" is allocated in the permanent generation. Disgard
|
|
2297 |
// it and let it be collected.
|
|
2298 |
(*fields_ptr) = fields_with_fix;
|
|
2299 |
}
|
|
2300 |
return;
|
|
2301 |
}
|
|
2302 |
|
|
2303 |
|
|
2304 |
void ClassFileParser::java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
|
|
2305 |
FieldAllocationCount *fac_ptr, TRAPS) {
|
|
2306 |
// Add fake fields for java.lang.Class instances
|
|
2307 |
//
|
|
2308 |
// This is not particularly nice. We should consider adding a
|
|
2309 |
// private transient object field at the Java level to
|
|
2310 |
// java.lang.Class. Alternatively we could add a subclass of
|
|
2311 |
// instanceKlass which provides an accessor and size computer for
|
|
2312 |
// this field, but that appears to be more code than this hack.
|
|
2313 |
//
|
|
2314 |
// NOTE that we wedge these in at the beginning rather than the
|
|
2315 |
// end of the object because the Class layout changed between JDK
|
|
2316 |
// 1.3 and JDK 1.4 with the new reflection implementation; some
|
|
2317 |
// nonstatic oop fields were added at the Java level. The offsets
|
|
2318 |
// of these fake fields can't change between these two JDK
|
|
2319 |
// versions because when the offsets are computed at bootstrap
|
|
2320 |
// time we don't know yet which version of the JDK we're running in.
|
|
2321 |
|
|
2322 |
// The values below are fake but will force two non-static oop fields and
|
|
2323 |
// a corresponding non-static oop map block to be allocated.
|
|
2324 |
const int extra = java_lang_Class::number_of_fake_oop_fields;
|
|
2325 |
fac_ptr->nonstatic_oop_count += extra;
|
|
2326 |
}
|
|
2327 |
|
|
2328 |
|
|
2329 |
void ClassFileParser::java_lang_Class_fix_post(int* next_nonstatic_oop_offset_ptr) {
|
|
2330 |
// Cause the extra fake fields in java.lang.Class to show up before
|
|
2331 |
// the Java fields for layout compatibility between 1.3 and 1.4
|
|
2332 |
// Incrementing next_nonstatic_oop_offset here advances the
|
|
2333 |
// location where the real java fields are placed.
|
|
2334 |
const int extra = java_lang_Class::number_of_fake_oop_fields;
|
|
2335 |
(*next_nonstatic_oop_offset_ptr) += (extra * wordSize);
|
|
2336 |
}
|
|
2337 |
|
|
2338 |
|
|
2339 |
instanceKlassHandle ClassFileParser::parseClassFile(symbolHandle name,
|
|
2340 |
Handle class_loader,
|
|
2341 |
Handle protection_domain,
|
|
2342 |
symbolHandle& parsed_name,
|
|
2343 |
TRAPS) {
|
|
2344 |
// So that JVMTI can cache class file in the state before retransformable agents
|
|
2345 |
// have modified it
|
|
2346 |
unsigned char *cached_class_file_bytes = NULL;
|
|
2347 |
jint cached_class_file_length;
|
|
2348 |
|
|
2349 |
ClassFileStream* cfs = stream();
|
|
2350 |
// Timing
|
|
2351 |
PerfTraceTime vmtimer(ClassLoader::perf_accumulated_time());
|
|
2352 |
|
|
2353 |
_has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
|
|
2354 |
|
|
2355 |
if (JvmtiExport::should_post_class_file_load_hook()) {
|
|
2356 |
unsigned char* ptr = cfs->buffer();
|
|
2357 |
unsigned char* end_ptr = cfs->buffer() + cfs->length();
|
|
2358 |
|
|
2359 |
JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain,
|
|
2360 |
&ptr, &end_ptr,
|
|
2361 |
&cached_class_file_bytes,
|
|
2362 |
&cached_class_file_length);
|
|
2363 |
|
|
2364 |
if (ptr != cfs->buffer()) {
|
|
2365 |
// JVMTI agent has modified class file data.
|
|
2366 |
// Set new class file stream using JVMTI agent modified
|
|
2367 |
// class file data.
|
|
2368 |
cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source());
|
|
2369 |
set_stream(cfs);
|
|
2370 |
}
|
|
2371 |
}
|
|
2372 |
|
|
2373 |
|
|
2374 |
instanceKlassHandle nullHandle;
|
|
2375 |
|
|
2376 |
// Figure out whether we can skip format checking (matching classic VM behavior)
|
|
2377 |
_need_verify = Verifier::should_verify_for(class_loader());
|
|
2378 |
|
|
2379 |
// Set the verify flag in stream
|
|
2380 |
cfs->set_verify(_need_verify);
|
|
2381 |
|
|
2382 |
// Save the class file name for easier error message printing.
|
|
2383 |
_class_name = name.not_null()? name : vmSymbolHandles::unknown_class_name();
|
|
2384 |
|
|
2385 |
cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor
|
|
2386 |
// Magic value
|
|
2387 |
u4 magic = cfs->get_u4_fast();
|
|
2388 |
guarantee_property(magic == JAVA_CLASSFILE_MAGIC,
|
|
2389 |
"Incompatible magic value %u in class file %s",
|
|
2390 |
magic, CHECK_(nullHandle));
|
|
2391 |
|
|
2392 |
// Version numbers
|
|
2393 |
u2 minor_version = cfs->get_u2_fast();
|
|
2394 |
u2 major_version = cfs->get_u2_fast();
|
|
2395 |
|
|
2396 |
// Check version numbers - we check this even with verifier off
|
|
2397 |
if (!is_supported_version(major_version, minor_version)) {
|
|
2398 |
if (name.is_null()) {
|
|
2399 |
Exceptions::fthrow(
|
|
2400 |
THREAD_AND_LOCATION,
|
|
2401 |
vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
|
|
2402 |
"Unsupported major.minor version %u.%u",
|
|
2403 |
major_version,
|
|
2404 |
minor_version);
|
|
2405 |
} else {
|
|
2406 |
ResourceMark rm(THREAD);
|
|
2407 |
Exceptions::fthrow(
|
|
2408 |
THREAD_AND_LOCATION,
|
|
2409 |
vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
|
|
2410 |
"%s : Unsupported major.minor version %u.%u",
|
|
2411 |
name->as_C_string(),
|
|
2412 |
major_version,
|
|
2413 |
minor_version);
|
|
2414 |
}
|
|
2415 |
return nullHandle;
|
|
2416 |
}
|
|
2417 |
|
|
2418 |
_major_version = major_version;
|
|
2419 |
_minor_version = minor_version;
|
|
2420 |
|
|
2421 |
|
|
2422 |
// Check if verification needs to be relaxed for this class file
|
|
2423 |
// Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376)
|
|
2424 |
_relax_verify = Verifier::relax_verify_for(class_loader());
|
|
2425 |
|
|
2426 |
// Constant pool
|
|
2427 |
constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle));
|
|
2428 |
int cp_size = cp->length();
|
|
2429 |
|
|
2430 |
cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len
|
|
2431 |
|
|
2432 |
// Access flags
|
|
2433 |
AccessFlags access_flags;
|
|
2434 |
jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS;
|
|
2435 |
|
|
2436 |
if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
|
|
2437 |
// Set abstract bit for old class files for backward compatibility
|
|
2438 |
flags |= JVM_ACC_ABSTRACT;
|
|
2439 |
}
|
|
2440 |
verify_legal_class_modifiers(flags, CHECK_(nullHandle));
|
|
2441 |
access_flags.set_flags(flags);
|
|
2442 |
|
|
2443 |
// This class and superclass
|
|
2444 |
instanceKlassHandle super_klass;
|
|
2445 |
u2 this_class_index = cfs->get_u2_fast();
|
|
2446 |
check_property(
|
|
2447 |
valid_cp_range(this_class_index, cp_size) &&
|
|
2448 |
cp->tag_at(this_class_index).is_unresolved_klass(),
|
|
2449 |
"Invalid this class index %u in constant pool in class file %s",
|
|
2450 |
this_class_index, CHECK_(nullHandle));
|
|
2451 |
|
|
2452 |
symbolHandle class_name (THREAD, cp->unresolved_klass_at(this_class_index));
|
|
2453 |
assert(class_name.not_null(), "class_name can't be null");
|
|
2454 |
|
|
2455 |
// It's important to set parsed_name *before* resolving the super class.
|
|
2456 |
// (it's used for cleanup by the caller if parsing fails)
|
|
2457 |
parsed_name = class_name;
|
|
2458 |
|
|
2459 |
// Update _class_name which could be null previously to be class_name
|
|
2460 |
_class_name = class_name;
|
|
2461 |
|
|
2462 |
// Don't need to check whether this class name is legal or not.
|
|
2463 |
// It has been checked when constant pool is parsed.
|
|
2464 |
// However, make sure it is not an array type.
|
|
2465 |
if (_need_verify) {
|
|
2466 |
guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
2467 |
"Bad class name in class file %s",
|
|
2468 |
CHECK_(nullHandle));
|
|
2469 |
}
|
|
2470 |
|
|
2471 |
klassOop preserve_this_klass; // for storing result across HandleMark
|
|
2472 |
|
|
2473 |
// release all handles when parsing is done
|
|
2474 |
{ HandleMark hm(THREAD);
|
|
2475 |
|
|
2476 |
// Checks if name in class file matches requested name
|
|
2477 |
if (name.not_null() && class_name() != name()) {
|
|
2478 |
ResourceMark rm(THREAD);
|
|
2479 |
Exceptions::fthrow(
|
|
2480 |
THREAD_AND_LOCATION,
|
|
2481 |
vmSymbolHandles::java_lang_NoClassDefFoundError(),
|
|
2482 |
"%s (wrong name: %s)",
|
|
2483 |
name->as_C_string(),
|
|
2484 |
class_name->as_C_string()
|
|
2485 |
);
|
|
2486 |
return nullHandle;
|
|
2487 |
}
|
|
2488 |
|
|
2489 |
if (TraceClassLoadingPreorder) {
|
|
2490 |
tty->print("[Loading %s", name()->as_klass_external_name());
|
|
2491 |
if (cfs->source() != NULL) tty->print(" from %s", cfs->source());
|
|
2492 |
tty->print_cr("]");
|
|
2493 |
}
|
|
2494 |
|
|
2495 |
u2 super_class_index = cfs->get_u2_fast();
|
|
2496 |
if (super_class_index == 0) {
|
|
2497 |
check_property(class_name() == vmSymbols::java_lang_Object(),
|
|
2498 |
"Invalid superclass index %u in class file %s",
|
|
2499 |
super_class_index,
|
|
2500 |
CHECK_(nullHandle));
|
|
2501 |
} else {
|
|
2502 |
check_property(valid_cp_range(super_class_index, cp_size) &&
|
|
2503 |
cp->tag_at(super_class_index).is_unresolved_klass(),
|
|
2504 |
"Invalid superclass index %u in class file %s",
|
|
2505 |
super_class_index,
|
|
2506 |
CHECK_(nullHandle));
|
|
2507 |
// The class name should be legal because it is checked when parsing constant pool.
|
|
2508 |
// However, make sure it is not an array type.
|
|
2509 |
if (_need_verify) {
|
|
2510 |
guarantee_property(cp->unresolved_klass_at(super_class_index)->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
2511 |
"Bad superclass name in class file %s", CHECK_(nullHandle));
|
|
2512 |
}
|
|
2513 |
}
|
|
2514 |
|
|
2515 |
// Interfaces
|
|
2516 |
u2 itfs_len = cfs->get_u2_fast();
|
|
2517 |
objArrayHandle local_interfaces;
|
|
2518 |
if (itfs_len == 0) {
|
|
2519 |
local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
2520 |
} else {
|
|
2521 |
local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, &vmtimer, _class_name, CHECK_(nullHandle));
|
|
2522 |
}
|
|
2523 |
|
|
2524 |
// Fields (offsets are filled in later)
|
|
2525 |
struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0};
|
|
2526 |
objArrayHandle fields_annotations;
|
|
2527 |
typeArrayHandle fields = parse_fields(cp, access_flags.is_interface(), &fac, &fields_annotations, CHECK_(nullHandle));
|
|
2528 |
// Methods
|
|
2529 |
bool has_final_method = false;
|
|
2530 |
AccessFlags promoted_flags;
|
|
2531 |
promoted_flags.set_flags(0);
|
|
2532 |
// These need to be oop pointers because they are allocated lazily
|
|
2533 |
// inside parse_methods inside a nested HandleMark
|
|
2534 |
objArrayOop methods_annotations_oop = NULL;
|
|
2535 |
objArrayOop methods_parameter_annotations_oop = NULL;
|
|
2536 |
objArrayOop methods_default_annotations_oop = NULL;
|
|
2537 |
objArrayHandle methods = parse_methods(cp, access_flags.is_interface(),
|
|
2538 |
&promoted_flags,
|
|
2539 |
&has_final_method,
|
|
2540 |
&methods_annotations_oop,
|
|
2541 |
&methods_parameter_annotations_oop,
|
|
2542 |
&methods_default_annotations_oop,
|
|
2543 |
CHECK_(nullHandle));
|
|
2544 |
|
|
2545 |
objArrayHandle methods_annotations(THREAD, methods_annotations_oop);
|
|
2546 |
objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop);
|
|
2547 |
objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop);
|
|
2548 |
|
|
2549 |
// We check super class after class file is parsed and format is checked
|
|
2550 |
if (super_class_index > 0) {
|
|
2551 |
symbolHandle sk (THREAD, cp->klass_name_at(super_class_index));
|
|
2552 |
if (access_flags.is_interface()) {
|
|
2553 |
// Before attempting to resolve the superclass, check for class format
|
|
2554 |
// errors not checked yet.
|
|
2555 |
guarantee_property(sk() == vmSymbols::java_lang_Object(),
|
|
2556 |
"Interfaces must have java.lang.Object as superclass in class file %s",
|
|
2557 |
CHECK_(nullHandle));
|
|
2558 |
}
|
|
2559 |
klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
|
|
2560 |
sk,
|
|
2561 |
class_loader,
|
|
2562 |
protection_domain,
|
|
2563 |
true,
|
|
2564 |
CHECK_(nullHandle));
|
|
2565 |
KlassHandle kh (THREAD, k);
|
|
2566 |
super_klass = instanceKlassHandle(THREAD, kh());
|
|
2567 |
if (super_klass->is_interface()) {
|
|
2568 |
ResourceMark rm(THREAD);
|
|
2569 |
Exceptions::fthrow(
|
|
2570 |
THREAD_AND_LOCATION,
|
|
2571 |
vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
|
|
2572 |
"class %s has interface %s as super class",
|
|
2573 |
class_name->as_klass_external_name(),
|
|
2574 |
super_klass->external_name()
|
|
2575 |
);
|
|
2576 |
return nullHandle;
|
|
2577 |
}
|
|
2578 |
// Make sure super class is not final
|
|
2579 |
if (super_klass->is_final()) {
|
|
2580 |
THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle);
|
|
2581 |
}
|
|
2582 |
}
|
|
2583 |
|
|
2584 |
// Compute the transitive list of all unique interfaces implemented by this class
|
|
2585 |
objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle));
|
|
2586 |
|
|
2587 |
// sort methods
|
|
2588 |
typeArrayHandle method_ordering = sort_methods(methods,
|
|
2589 |
methods_annotations,
|
|
2590 |
methods_parameter_annotations,
|
|
2591 |
methods_default_annotations,
|
|
2592 |
CHECK_(nullHandle));
|
|
2593 |
|
|
2594 |
// promote flags from parse_methods() to the klass' flags
|
|
2595 |
access_flags.add_promoted_flags(promoted_flags.as_int());
|
|
2596 |
|
|
2597 |
// Size of Java vtable (in words)
|
|
2598 |
int vtable_size = 0;
|
|
2599 |
int itable_size = 0;
|
|
2600 |
int num_miranda_methods = 0;
|
|
2601 |
|
|
2602 |
klassVtable::compute_vtable_size_and_num_mirandas(vtable_size,
|
|
2603 |
num_miranda_methods,
|
|
2604 |
super_klass(),
|
|
2605 |
methods(),
|
|
2606 |
access_flags,
|
|
2607 |
class_loader(),
|
|
2608 |
class_name(),
|
|
2609 |
local_interfaces());
|
|
2610 |
|
|
2611 |
// Size of Java itable (in words)
|
|
2612 |
itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces);
|
|
2613 |
|
|
2614 |
// Field size and offset computation
|
|
2615 |
int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size();
|
|
2616 |
#ifndef PRODUCT
|
|
2617 |
int orig_nonstatic_field_size = 0;
|
|
2618 |
#endif
|
|
2619 |
int static_field_size = 0;
|
|
2620 |
int next_static_oop_offset;
|
|
2621 |
int next_static_double_offset;
|
|
2622 |
int next_static_word_offset;
|
|
2623 |
int next_static_short_offset;
|
|
2624 |
int next_static_byte_offset;
|
|
2625 |
int next_static_type_offset;
|
|
2626 |
int next_nonstatic_oop_offset;
|
|
2627 |
int next_nonstatic_double_offset;
|
|
2628 |
int next_nonstatic_word_offset;
|
|
2629 |
int next_nonstatic_short_offset;
|
|
2630 |
int next_nonstatic_byte_offset;
|
|
2631 |
int next_nonstatic_type_offset;
|
|
2632 |
int first_nonstatic_oop_offset;
|
|
2633 |
int first_nonstatic_field_offset;
|
|
2634 |
int next_nonstatic_field_offset;
|
|
2635 |
|
|
2636 |
// Calculate the starting byte offsets
|
|
2637 |
next_static_oop_offset = (instanceKlass::header_size() +
|
|
2638 |
align_object_offset(vtable_size) +
|
|
2639 |
align_object_offset(itable_size)) * wordSize;
|
|
2640 |
next_static_double_offset = next_static_oop_offset +
|
|
2641 |
(fac.static_oop_count * oopSize);
|
|
2642 |
if ( fac.static_double_count &&
|
|
2643 |
(Universe::field_type_should_be_aligned(T_DOUBLE) ||
|
|
2644 |
Universe::field_type_should_be_aligned(T_LONG)) ) {
|
|
2645 |
next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong);
|
|
2646 |
}
|
|
2647 |
|
|
2648 |
next_static_word_offset = next_static_double_offset +
|
|
2649 |
(fac.static_double_count * BytesPerLong);
|
|
2650 |
next_static_short_offset = next_static_word_offset +
|
|
2651 |
(fac.static_word_count * BytesPerInt);
|
|
2652 |
next_static_byte_offset = next_static_short_offset +
|
|
2653 |
(fac.static_short_count * BytesPerShort);
|
|
2654 |
next_static_type_offset = align_size_up((next_static_byte_offset +
|
|
2655 |
fac.static_byte_count ), wordSize );
|
|
2656 |
static_field_size = (next_static_type_offset -
|
|
2657 |
next_static_oop_offset) / wordSize;
|
|
2658 |
first_nonstatic_field_offset = (instanceOopDesc::header_size() +
|
|
2659 |
nonstatic_field_size) * wordSize;
|
|
2660 |
next_nonstatic_field_offset = first_nonstatic_field_offset;
|
|
2661 |
|
|
2662 |
// Add fake fields for java.lang.Class instances (also see below)
|
|
2663 |
if (class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
|
|
2664 |
java_lang_Class_fix_pre(&methods, &fac, CHECK_(nullHandle));
|
|
2665 |
}
|
|
2666 |
|
|
2667 |
// Add a fake "discovered" field if it is not present
|
|
2668 |
// for compatibility with earlier jdk's.
|
|
2669 |
if (class_name() == vmSymbols::java_lang_ref_Reference()
|
|
2670 |
&& class_loader.is_null()) {
|
|
2671 |
java_lang_ref_Reference_fix_pre(&fields, cp, &fac, CHECK_(nullHandle));
|
|
2672 |
}
|
|
2673 |
// end of "discovered" field compactibility fix
|
|
2674 |
|
|
2675 |
int nonstatic_double_count = fac.nonstatic_double_count;
|
|
2676 |
int nonstatic_word_count = fac.nonstatic_word_count;
|
|
2677 |
int nonstatic_short_count = fac.nonstatic_short_count;
|
|
2678 |
int nonstatic_byte_count = fac.nonstatic_byte_count;
|
|
2679 |
int nonstatic_oop_count = fac.nonstatic_oop_count;
|
|
2680 |
|
|
2681 |
// Prepare list of oops for oop maps generation.
|
|
2682 |
u2* nonstatic_oop_offsets;
|
|
2683 |
u2* nonstatic_oop_length;
|
|
2684 |
int nonstatic_oop_map_count = 0;
|
|
2685 |
|
|
2686 |
nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
2687 |
THREAD, u2, nonstatic_oop_count+1);
|
|
2688 |
nonstatic_oop_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
2689 |
THREAD, u2, nonstatic_oop_count+1);
|
|
2690 |
|
|
2691 |
// Add fake fields for java.lang.Class instances (also see above).
|
|
2692 |
// FieldsAllocationStyle and CompactFields values will be reset to default.
|
|
2693 |
if(class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
|
|
2694 |
java_lang_Class_fix_post(&next_nonstatic_field_offset);
|
|
2695 |
nonstatic_oop_offsets[0] = (u2)first_nonstatic_field_offset;
|
|
2696 |
int fake_oop_count = (( next_nonstatic_field_offset -
|
|
2697 |
first_nonstatic_field_offset ) / oopSize);
|
|
2698 |
nonstatic_oop_length [0] = (u2)fake_oop_count;
|
|
2699 |
nonstatic_oop_map_count = 1;
|
|
2700 |
nonstatic_oop_count -= fake_oop_count;
|
|
2701 |
first_nonstatic_oop_offset = first_nonstatic_field_offset;
|
|
2702 |
} else {
|
|
2703 |
first_nonstatic_oop_offset = 0; // will be set for first oop field
|
|
2704 |
}
|
|
2705 |
|
|
2706 |
#ifndef PRODUCT
|
|
2707 |
if( PrintCompactFieldsSavings ) {
|
|
2708 |
next_nonstatic_double_offset = next_nonstatic_field_offset +
|
|
2709 |
(nonstatic_oop_count * oopSize);
|
|
2710 |
if ( nonstatic_double_count > 0 ) {
|
|
2711 |
next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong);
|
|
2712 |
}
|
|
2713 |
next_nonstatic_word_offset = next_nonstatic_double_offset +
|
|
2714 |
(nonstatic_double_count * BytesPerLong);
|
|
2715 |
next_nonstatic_short_offset = next_nonstatic_word_offset +
|
|
2716 |
(nonstatic_word_count * BytesPerInt);
|
|
2717 |
next_nonstatic_byte_offset = next_nonstatic_short_offset +
|
|
2718 |
(nonstatic_short_count * BytesPerShort);
|
|
2719 |
next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset +
|
|
2720 |
nonstatic_byte_count ), wordSize );
|
|
2721 |
orig_nonstatic_field_size = nonstatic_field_size +
|
|
2722 |
((next_nonstatic_type_offset - first_nonstatic_field_offset)/wordSize);
|
|
2723 |
}
|
|
2724 |
#endif
|
|
2725 |
bool compact_fields = CompactFields;
|
|
2726 |
int allocation_style = FieldsAllocationStyle;
|
|
2727 |
if( allocation_style < 0 || allocation_style > 1 ) { // Out of range?
|
|
2728 |
assert(false, "0 <= FieldsAllocationStyle <= 1");
|
|
2729 |
allocation_style = 1; // Optimistic
|
|
2730 |
}
|
|
2731 |
|
|
2732 |
// The next classes have predefined hard-coded fields offsets
|
|
2733 |
// (see in JavaClasses::compute_hard_coded_offsets()).
|
|
2734 |
// Use default fields allocation order for them.
|
|
2735 |
if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() &&
|
|
2736 |
(class_name() == vmSymbols::java_lang_AssertionStatusDirectives() ||
|
|
2737 |
class_name() == vmSymbols::java_lang_Class() ||
|
|
2738 |
class_name() == vmSymbols::java_lang_ClassLoader() ||
|
|
2739 |
class_name() == vmSymbols::java_lang_ref_Reference() ||
|
|
2740 |
class_name() == vmSymbols::java_lang_ref_SoftReference() ||
|
|
2741 |
class_name() == vmSymbols::java_lang_StackTraceElement() ||
|
|
2742 |
class_name() == vmSymbols::java_lang_String() ||
|
|
2743 |
class_name() == vmSymbols::java_lang_Throwable()) ) {
|
|
2744 |
allocation_style = 0; // Allocate oops first
|
|
2745 |
compact_fields = false; // Don't compact fields
|
|
2746 |
}
|
|
2747 |
|
|
2748 |
if( allocation_style == 0 ) {
|
|
2749 |
// Fields order: oops, longs/doubles, ints, shorts/chars, bytes
|
|
2750 |
next_nonstatic_oop_offset = next_nonstatic_field_offset;
|
|
2751 |
next_nonstatic_double_offset = next_nonstatic_oop_offset +
|
|
2752 |
(nonstatic_oop_count * oopSize);
|
|
2753 |
} else if( allocation_style == 1 ) {
|
|
2754 |
// Fields order: longs/doubles, ints, shorts/chars, bytes, oops
|
|
2755 |
next_nonstatic_double_offset = next_nonstatic_field_offset;
|
|
2756 |
} else {
|
|
2757 |
ShouldNotReachHere();
|
|
2758 |
}
|
|
2759 |
|
|
2760 |
int nonstatic_oop_space_count = 0;
|
|
2761 |
int nonstatic_word_space_count = 0;
|
|
2762 |
int nonstatic_short_space_count = 0;
|
|
2763 |
int nonstatic_byte_space_count = 0;
|
|
2764 |
int nonstatic_oop_space_offset;
|
|
2765 |
int nonstatic_word_space_offset;
|
|
2766 |
int nonstatic_short_space_offset;
|
|
2767 |
int nonstatic_byte_space_offset;
|
|
2768 |
|
|
2769 |
if( nonstatic_double_count > 0 ) {
|
|
2770 |
int offset = next_nonstatic_double_offset;
|
|
2771 |
next_nonstatic_double_offset = align_size_up(offset, BytesPerLong);
|
|
2772 |
if( compact_fields && offset != next_nonstatic_double_offset ) {
|
|
2773 |
// Allocate available fields into the gap before double field.
|
|
2774 |
int length = next_nonstatic_double_offset - offset;
|
|
2775 |
assert(length == BytesPerInt, "");
|
|
2776 |
nonstatic_word_space_offset = offset;
|
|
2777 |
if( nonstatic_word_count > 0 ) {
|
|
2778 |
nonstatic_word_count -= 1;
|
|
2779 |
nonstatic_word_space_count = 1; // Only one will fit
|
|
2780 |
length -= BytesPerInt;
|
|
2781 |
offset += BytesPerInt;
|
|
2782 |
}
|
|
2783 |
nonstatic_short_space_offset = offset;
|
|
2784 |
while( length >= BytesPerShort && nonstatic_short_count > 0 ) {
|
|
2785 |
nonstatic_short_count -= 1;
|
|
2786 |
nonstatic_short_space_count += 1;
|
|
2787 |
length -= BytesPerShort;
|
|
2788 |
offset += BytesPerShort;
|
|
2789 |
}
|
|
2790 |
nonstatic_byte_space_offset = offset;
|
|
2791 |
while( length > 0 && nonstatic_byte_count > 0 ) {
|
|
2792 |
nonstatic_byte_count -= 1;
|
|
2793 |
nonstatic_byte_space_count += 1;
|
|
2794 |
length -= 1;
|
|
2795 |
}
|
|
2796 |
// Allocate oop field in the gap if there are no other fields for that.
|
|
2797 |
nonstatic_oop_space_offset = offset;
|
|
2798 |
if( length >= oopSize && nonstatic_oop_count > 0 &&
|
|
2799 |
allocation_style != 0 ) { // when oop fields not first
|
|
2800 |
nonstatic_oop_count -= 1;
|
|
2801 |
nonstatic_oop_space_count = 1; // Only one will fit
|
|
2802 |
length -= oopSize;
|
|
2803 |
offset += oopSize;
|
|
2804 |
}
|
|
2805 |
}
|
|
2806 |
}
|
|
2807 |
|
|
2808 |
next_nonstatic_word_offset = next_nonstatic_double_offset +
|
|
2809 |
(nonstatic_double_count * BytesPerLong);
|
|
2810 |
next_nonstatic_short_offset = next_nonstatic_word_offset +
|
|
2811 |
(nonstatic_word_count * BytesPerInt);
|
|
2812 |
next_nonstatic_byte_offset = next_nonstatic_short_offset +
|
|
2813 |
(nonstatic_short_count * BytesPerShort);
|
|
2814 |
|
|
2815 |
int notaligned_offset;
|
|
2816 |
if( allocation_style == 0 ) {
|
|
2817 |
notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
|
|
2818 |
} else { // allocation_style == 1
|
|
2819 |
next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
|
|
2820 |
if( nonstatic_oop_count > 0 ) {
|
|
2821 |
notaligned_offset = next_nonstatic_oop_offset;
|
|
2822 |
next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, oopSize);
|
|
2823 |
}
|
|
2824 |
notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * oopSize);
|
|
2825 |
}
|
|
2826 |
next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize );
|
|
2827 |
nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset
|
|
2828 |
- first_nonstatic_field_offset)/wordSize);
|
|
2829 |
|
|
2830 |
// Iterate over fields again and compute correct offsets.
|
|
2831 |
// The field allocation type was temporarily stored in the offset slot.
|
|
2832 |
// oop fields are located before non-oop fields (static and non-static).
|
|
2833 |
int len = fields->length();
|
|
2834 |
for (int i = 0; i < len; i += instanceKlass::next_offset) {
|
|
2835 |
int real_offset;
|
|
2836 |
FieldAllocationType atype = (FieldAllocationType) fields->ushort_at(i+4);
|
|
2837 |
switch (atype) {
|
|
2838 |
case STATIC_OOP:
|
|
2839 |
real_offset = next_static_oop_offset;
|
|
2840 |
next_static_oop_offset += oopSize;
|
|
2841 |
break;
|
|
2842 |
case STATIC_BYTE:
|
|
2843 |
real_offset = next_static_byte_offset;
|
|
2844 |
next_static_byte_offset += 1;
|
|
2845 |
break;
|
|
2846 |
case STATIC_SHORT:
|
|
2847 |
real_offset = next_static_short_offset;
|
|
2848 |
next_static_short_offset += BytesPerShort;
|
|
2849 |
break;
|
|
2850 |
case STATIC_WORD:
|
|
2851 |
real_offset = next_static_word_offset;
|
|
2852 |
next_static_word_offset += BytesPerInt;
|
|
2853 |
break;
|
|
2854 |
case STATIC_ALIGNED_DOUBLE:
|
|
2855 |
case STATIC_DOUBLE:
|
|
2856 |
real_offset = next_static_double_offset;
|
|
2857 |
next_static_double_offset += BytesPerLong;
|
|
2858 |
break;
|
|
2859 |
case NONSTATIC_OOP:
|
|
2860 |
if( nonstatic_oop_space_count > 0 ) {
|
|
2861 |
real_offset = nonstatic_oop_space_offset;
|
|
2862 |
nonstatic_oop_space_offset += oopSize;
|
|
2863 |
nonstatic_oop_space_count -= 1;
|
|
2864 |
} else {
|
|
2865 |
real_offset = next_nonstatic_oop_offset;
|
|
2866 |
next_nonstatic_oop_offset += oopSize;
|
|
2867 |
}
|
|
2868 |
// Update oop maps
|
|
2869 |
if( nonstatic_oop_map_count > 0 &&
|
|
2870 |
nonstatic_oop_offsets[nonstatic_oop_map_count - 1] ==
|
|
2871 |
(u2)(real_offset - nonstatic_oop_length[nonstatic_oop_map_count - 1] * oopSize) ) {
|
|
2872 |
// Extend current oop map
|
|
2873 |
nonstatic_oop_length[nonstatic_oop_map_count - 1] += 1;
|
|
2874 |
} else {
|
|
2875 |
// Create new oop map
|
|
2876 |
nonstatic_oop_offsets[nonstatic_oop_map_count] = (u2)real_offset;
|
|
2877 |
nonstatic_oop_length [nonstatic_oop_map_count] = 1;
|
|
2878 |
nonstatic_oop_map_count += 1;
|
|
2879 |
if( first_nonstatic_oop_offset == 0 ) { // Undefined
|
|
2880 |
first_nonstatic_oop_offset = real_offset;
|
|
2881 |
}
|
|
2882 |
}
|
|
2883 |
break;
|
|
2884 |
case NONSTATIC_BYTE:
|
|
2885 |
if( nonstatic_byte_space_count > 0 ) {
|
|
2886 |
real_offset = nonstatic_byte_space_offset;
|
|
2887 |
nonstatic_byte_space_offset += 1;
|
|
2888 |
nonstatic_byte_space_count -= 1;
|
|
2889 |
} else {
|
|
2890 |
real_offset = next_nonstatic_byte_offset;
|
|
2891 |
next_nonstatic_byte_offset += 1;
|
|
2892 |
}
|
|
2893 |
break;
|
|
2894 |
case NONSTATIC_SHORT:
|
|
2895 |
if( nonstatic_short_space_count > 0 ) {
|
|
2896 |
real_offset = nonstatic_short_space_offset;
|
|
2897 |
nonstatic_short_space_offset += BytesPerShort;
|
|
2898 |
nonstatic_short_space_count -= 1;
|
|
2899 |
} else {
|
|
2900 |
real_offset = next_nonstatic_short_offset;
|
|
2901 |
next_nonstatic_short_offset += BytesPerShort;
|
|
2902 |
}
|
|
2903 |
break;
|
|
2904 |
case NONSTATIC_WORD:
|
|
2905 |
if( nonstatic_word_space_count > 0 ) {
|
|
2906 |
real_offset = nonstatic_word_space_offset;
|
|
2907 |
nonstatic_word_space_offset += BytesPerInt;
|
|
2908 |
nonstatic_word_space_count -= 1;
|
|
2909 |
} else {
|
|
2910 |
real_offset = next_nonstatic_word_offset;
|
|
2911 |
next_nonstatic_word_offset += BytesPerInt;
|
|
2912 |
}
|
|
2913 |
break;
|
|
2914 |
case NONSTATIC_ALIGNED_DOUBLE:
|
|
2915 |
case NONSTATIC_DOUBLE:
|
|
2916 |
real_offset = next_nonstatic_double_offset;
|
|
2917 |
next_nonstatic_double_offset += BytesPerLong;
|
|
2918 |
break;
|
|
2919 |
default:
|
|
2920 |
ShouldNotReachHere();
|
|
2921 |
}
|
|
2922 |
fields->short_at_put(i+4, extract_low_short_from_int(real_offset) );
|
|
2923 |
fields->short_at_put(i+5, extract_high_short_from_int(real_offset) );
|
|
2924 |
}
|
|
2925 |
|
|
2926 |
// Size of instances
|
|
2927 |
int instance_size;
|
|
2928 |
|
|
2929 |
instance_size = align_object_size(next_nonstatic_type_offset / wordSize);
|
|
2930 |
|
|
2931 |
assert(instance_size == align_object_size(instanceOopDesc::header_size() + nonstatic_field_size), "consistent layout helper value");
|
|
2932 |
|
|
2933 |
// Size of non-static oop map blocks (in words) allocated at end of klass
|
|
2934 |
int nonstatic_oop_map_size = compute_oop_map_size(super_klass, nonstatic_oop_map_count, first_nonstatic_oop_offset);
|
|
2935 |
|
|
2936 |
// Compute reference type
|
|
2937 |
ReferenceType rt;
|
|
2938 |
if (super_klass() == NULL) {
|
|
2939 |
rt = REF_NONE;
|
|
2940 |
} else {
|
|
2941 |
rt = super_klass->reference_type();
|
|
2942 |
}
|
|
2943 |
|
|
2944 |
// We can now create the basic klassOop for this klass
|
|
2945 |
klassOop ik = oopFactory::new_instanceKlass(
|
|
2946 |
vtable_size, itable_size,
|
|
2947 |
static_field_size, nonstatic_oop_map_size,
|
|
2948 |
rt, CHECK_(nullHandle));
|
|
2949 |
instanceKlassHandle this_klass (THREAD, ik);
|
|
2950 |
|
|
2951 |
assert(this_klass->static_field_size() == static_field_size &&
|
|
2952 |
this_klass->nonstatic_oop_map_size() == nonstatic_oop_map_size, "sanity check");
|
|
2953 |
|
|
2954 |
// Fill in information already parsed
|
|
2955 |
this_klass->set_access_flags(access_flags);
|
|
2956 |
jint lh = Klass::instance_layout_helper(instance_size, false);
|
|
2957 |
this_klass->set_layout_helper(lh);
|
|
2958 |
assert(this_klass->oop_is_instance(), "layout is correct");
|
|
2959 |
assert(this_klass->size_helper() == instance_size, "correct size_helper");
|
|
2960 |
// Not yet: supers are done below to support the new subtype-checking fields
|
|
2961 |
//this_klass->set_super(super_klass());
|
|
2962 |
this_klass->set_class_loader(class_loader());
|
|
2963 |
this_klass->set_nonstatic_field_size(nonstatic_field_size);
|
|
2964 |
this_klass->set_static_oop_field_size(fac.static_oop_count);
|
|
2965 |
cp->set_pool_holder(this_klass());
|
|
2966 |
this_klass->set_constants(cp());
|
|
2967 |
this_klass->set_local_interfaces(local_interfaces());
|
|
2968 |
this_klass->set_fields(fields());
|
|
2969 |
this_klass->set_methods(methods());
|
|
2970 |
if (has_final_method) {
|
|
2971 |
this_klass->set_has_final_method();
|
|
2972 |
}
|
|
2973 |
this_klass->set_method_ordering(method_ordering());
|
|
2974 |
this_klass->set_initial_method_idnum(methods->length());
|
|
2975 |
this_klass->set_name(cp->klass_name_at(this_class_index));
|
|
2976 |
this_klass->set_protection_domain(protection_domain());
|
|
2977 |
this_klass->set_fields_annotations(fields_annotations());
|
|
2978 |
this_klass->set_methods_annotations(methods_annotations());
|
|
2979 |
this_klass->set_methods_parameter_annotations(methods_parameter_annotations());
|
|
2980 |
this_klass->set_methods_default_annotations(methods_default_annotations());
|
|
2981 |
|
|
2982 |
this_klass->set_minor_version(minor_version);
|
|
2983 |
this_klass->set_major_version(major_version);
|
|
2984 |
|
|
2985 |
if (cached_class_file_bytes != NULL) {
|
|
2986 |
// JVMTI: we have an instanceKlass now, tell it about the cached bytes
|
|
2987 |
this_klass->set_cached_class_file(cached_class_file_bytes,
|
|
2988 |
cached_class_file_length);
|
|
2989 |
}
|
|
2990 |
|
|
2991 |
// Miranda methods
|
|
2992 |
if ((num_miranda_methods > 0) ||
|
|
2993 |
// if this class introduced new miranda methods or
|
|
2994 |
(super_klass.not_null() && (super_klass->has_miranda_methods()))
|
|
2995 |
// super class exists and this class inherited miranda methods
|
|
2996 |
) {
|
|
2997 |
this_klass->set_has_miranda_methods(); // then set a flag
|
|
2998 |
}
|
|
2999 |
|
|
3000 |
// Additional attributes
|
|
3001 |
parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle));
|
|
3002 |
|
|
3003 |
// Make sure this is the end of class file stream
|
|
3004 |
guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle));
|
|
3005 |
|
|
3006 |
// Initialize static fields
|
|
3007 |
this_klass->do_local_static_fields(&initialize_static_field, CHECK_(nullHandle));
|
|
3008 |
|
|
3009 |
// VerifyOops believes that once this has been set, the object is completely loaded.
|
|
3010 |
// Compute transitive closure of interfaces this class implements
|
|
3011 |
this_klass->set_transitive_interfaces(transitive_interfaces());
|
|
3012 |
|
|
3013 |
// Fill in information needed to compute superclasses.
|
|
3014 |
this_klass->initialize_supers(super_klass(), CHECK_(nullHandle));
|
|
3015 |
|
|
3016 |
// Initialize itable offset tables
|
|
3017 |
klassItable::setup_itable_offset_table(this_klass);
|
|
3018 |
|
|
3019 |
// Do final class setup
|
|
3020 |
fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_length);
|
|
3021 |
|
|
3022 |
set_precomputed_flags(this_klass);
|
|
3023 |
|
|
3024 |
// reinitialize modifiers, using the InnerClasses attribute
|
|
3025 |
int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle));
|
|
3026 |
this_klass->set_modifier_flags(computed_modifiers);
|
|
3027 |
|
|
3028 |
// check if this class can access its super class
|
|
3029 |
check_super_class_access(this_klass, CHECK_(nullHandle));
|
|
3030 |
|
|
3031 |
// check if this class can access its superinterfaces
|
|
3032 |
check_super_interface_access(this_klass, CHECK_(nullHandle));
|
|
3033 |
|
|
3034 |
// check if this class overrides any final method
|
|
3035 |
check_final_method_override(this_klass, CHECK_(nullHandle));
|
|
3036 |
|
|
3037 |
// check that if this class is an interface then it doesn't have static methods
|
|
3038 |
if (this_klass->is_interface()) {
|
|
3039 |
check_illegal_static_method(this_klass, CHECK_(nullHandle));
|
|
3040 |
}
|
|
3041 |
|
|
3042 |
ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()),
|
|
3043 |
false /* not shared class */);
|
|
3044 |
|
|
3045 |
if (TraceClassLoading) {
|
|
3046 |
// print in a single call to reduce interleaving of output
|
|
3047 |
if (cfs->source() != NULL) {
|
|
3048 |
tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
|
|
3049 |
cfs->source());
|
|
3050 |
} else if (class_loader.is_null()) {
|
|
3051 |
if (THREAD->is_Java_thread()) {
|
|
3052 |
klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1);
|
|
3053 |
tty->print("[Loaded %s by instance of %s]\n",
|
|
3054 |
this_klass->external_name(),
|
|
3055 |
instanceKlass::cast(caller)->external_name());
|
|
3056 |
} else {
|
|
3057 |
tty->print("[Loaded %s]\n", this_klass->external_name());
|
|
3058 |
}
|
|
3059 |
} else {
|
|
3060 |
ResourceMark rm;
|
|
3061 |
tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
|
|
3062 |
instanceKlass::cast(class_loader->klass())->external_name());
|
|
3063 |
}
|
|
3064 |
}
|
|
3065 |
|
|
3066 |
if (TraceClassResolution) {
|
|
3067 |
// print out the superclass.
|
|
3068 |
const char * from = Klass::cast(this_klass())->external_name();
|
|
3069 |
if (this_klass->java_super() != NULL) {
|
|
3070 |
tty->print("RESOLVE %s %s\n", from, instanceKlass::cast(this_klass->java_super())->external_name());
|
|
3071 |
}
|
|
3072 |
// print out each of the interface classes referred to by this class.
|
|
3073 |
objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces());
|
|
3074 |
if (!local_interfaces.is_null()) {
|
|
3075 |
int length = local_interfaces->length();
|
|
3076 |
for (int i = 0; i < length; i++) {
|
|
3077 |
klassOop k = klassOop(local_interfaces->obj_at(i));
|
|
3078 |
instanceKlass* to_class = instanceKlass::cast(k);
|
|
3079 |
const char * to = to_class->external_name();
|
|
3080 |
tty->print("RESOLVE %s %s\n", from, to);
|
|
3081 |
}
|
|
3082 |
}
|
|
3083 |
}
|
|
3084 |
|
|
3085 |
#ifndef PRODUCT
|
|
3086 |
if( PrintCompactFieldsSavings ) {
|
|
3087 |
if( nonstatic_field_size < orig_nonstatic_field_size ) {
|
|
3088 |
tty->print("[Saved %d of %3d words in %s]\n",
|
|
3089 |
orig_nonstatic_field_size - nonstatic_field_size,
|
|
3090 |
orig_nonstatic_field_size, this_klass->external_name());
|
|
3091 |
} else if( nonstatic_field_size > orig_nonstatic_field_size ) {
|
|
3092 |
tty->print("[Wasted %d over %3d words in %s]\n",
|
|
3093 |
nonstatic_field_size - orig_nonstatic_field_size,
|
|
3094 |
orig_nonstatic_field_size, this_klass->external_name());
|
|
3095 |
}
|
|
3096 |
}
|
|
3097 |
#endif
|
|
3098 |
|
|
3099 |
// preserve result across HandleMark
|
|
3100 |
preserve_this_klass = this_klass();
|
|
3101 |
}
|
|
3102 |
|
|
3103 |
// Create new handle outside HandleMark
|
|
3104 |
instanceKlassHandle this_klass (THREAD, preserve_this_klass);
|
|
3105 |
debug_only(this_klass->as_klassOop()->verify();)
|
|
3106 |
|
|
3107 |
return this_klass;
|
|
3108 |
}
|
|
3109 |
|
|
3110 |
|
|
3111 |
int ClassFileParser::compute_oop_map_size(instanceKlassHandle super, int nonstatic_oop_map_count, int first_nonstatic_oop_offset) {
|
|
3112 |
int map_size = super.is_null() ? 0 : super->nonstatic_oop_map_size();
|
|
3113 |
if (nonstatic_oop_map_count > 0) {
|
|
3114 |
// We have oops to add to map
|
|
3115 |
if (map_size == 0) {
|
|
3116 |
map_size = nonstatic_oop_map_count;
|
|
3117 |
} else {
|
|
3118 |
// Check whether we should add a new map block or whether the last one can be extended
|
|
3119 |
OopMapBlock* first_map = super->start_of_nonstatic_oop_maps();
|
|
3120 |
OopMapBlock* last_map = first_map + map_size - 1;
|
|
3121 |
|
|
3122 |
int next_offset = last_map->offset() + (last_map->length() * oopSize);
|
|
3123 |
if (next_offset == first_nonstatic_oop_offset) {
|
|
3124 |
// There is no gap bettwen superklass's last oop field and first
|
|
3125 |
// local oop field, merge maps.
|
|
3126 |
nonstatic_oop_map_count -= 1;
|
|
3127 |
} else {
|
|
3128 |
// Superklass didn't end with a oop field, add extra maps
|
|
3129 |
assert(next_offset<first_nonstatic_oop_offset, "just checking");
|
|
3130 |
}
|
|
3131 |
map_size += nonstatic_oop_map_count;
|
|
3132 |
}
|
|
3133 |
}
|
|
3134 |
return map_size;
|
|
3135 |
}
|
|
3136 |
|
|
3137 |
|
|
3138 |
void ClassFileParser::fill_oop_maps(instanceKlassHandle k,
|
|
3139 |
int nonstatic_oop_map_count,
|
|
3140 |
u2* nonstatic_oop_offsets, u2* nonstatic_oop_length) {
|
|
3141 |
OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps();
|
|
3142 |
OopMapBlock* last_oop_map = this_oop_map + k->nonstatic_oop_map_size();
|
|
3143 |
instanceKlass* super = k->superklass();
|
|
3144 |
if (super != NULL) {
|
|
3145 |
int super_oop_map_size = super->nonstatic_oop_map_size();
|
|
3146 |
OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps();
|
|
3147 |
// Copy maps from superklass
|
|
3148 |
while (super_oop_map_size-- > 0) {
|
|
3149 |
*this_oop_map++ = *super_oop_map++;
|
|
3150 |
}
|
|
3151 |
}
|
|
3152 |
if (nonstatic_oop_map_count > 0) {
|
|
3153 |
if (this_oop_map + nonstatic_oop_map_count > last_oop_map) {
|
|
3154 |
// Calculated in compute_oop_map_size() number of oop maps is less then
|
|
3155 |
// collected oop maps since there is no gap between superklass's last oop
|
|
3156 |
// field and first local oop field. Extend the last oop map copied
|
|
3157 |
// from the superklass instead of creating new one.
|
|
3158 |
nonstatic_oop_map_count--;
|
|
3159 |
nonstatic_oop_offsets++;
|
|
3160 |
this_oop_map--;
|
|
3161 |
this_oop_map->set_length(this_oop_map->length() + *nonstatic_oop_length++);
|
|
3162 |
this_oop_map++;
|
|
3163 |
}
|
|
3164 |
assert((this_oop_map + nonstatic_oop_map_count) == last_oop_map, "just checking");
|
|
3165 |
// Add new map blocks, fill them
|
|
3166 |
while (nonstatic_oop_map_count-- > 0) {
|
|
3167 |
this_oop_map->set_offset(*nonstatic_oop_offsets++);
|
|
3168 |
this_oop_map->set_length(*nonstatic_oop_length++);
|
|
3169 |
this_oop_map++;
|
|
3170 |
}
|
|
3171 |
}
|
|
3172 |
}
|
|
3173 |
|
|
3174 |
|
|
3175 |
void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) {
|
|
3176 |
klassOop super = k->super();
|
|
3177 |
|
|
3178 |
// Check if this klass has an empty finalize method (i.e. one with return bytecode only),
|
|
3179 |
// in which case we don't have to register objects as finalizable
|
|
3180 |
if (!_has_empty_finalizer) {
|
|
3181 |
if (_has_finalizer ||
|
|
3182 |
(super != NULL && super->klass_part()->has_finalizer())) {
|
|
3183 |
k->set_has_finalizer();
|
|
3184 |
}
|
|
3185 |
}
|
|
3186 |
|
|
3187 |
#ifdef ASSERT
|
|
3188 |
bool f = false;
|
|
3189 |
methodOop m = k->lookup_method(vmSymbols::finalize_method_name(),
|
|
3190 |
vmSymbols::void_method_signature());
|
|
3191 |
if (m != NULL && !m->is_empty_method()) {
|
|
3192 |
f = true;
|
|
3193 |
}
|
|
3194 |
assert(f == k->has_finalizer(), "inconsistent has_finalizer");
|
|
3195 |
#endif
|
|
3196 |
|
|
3197 |
// Check if this klass supports the java.lang.Cloneable interface
|
|
3198 |
if (SystemDictionary::cloneable_klass_loaded()) {
|
|
3199 |
if (k->is_subtype_of(SystemDictionary::cloneable_klass())) {
|
|
3200 |
k->set_is_cloneable();
|
|
3201 |
}
|
|
3202 |
}
|
|
3203 |
|
|
3204 |
// Check if this klass has a vanilla default constructor
|
|
3205 |
if (super == NULL) {
|
|
3206 |
// java.lang.Object has empty default constructor
|
|
3207 |
k->set_has_vanilla_constructor();
|
|
3208 |
} else {
|
|
3209 |
if (Klass::cast(super)->has_vanilla_constructor() &&
|
|
3210 |
_has_vanilla_constructor) {
|
|
3211 |
k->set_has_vanilla_constructor();
|
|
3212 |
}
|
|
3213 |
#ifdef ASSERT
|
|
3214 |
bool v = false;
|
|
3215 |
if (Klass::cast(super)->has_vanilla_constructor()) {
|
|
3216 |
methodOop constructor = k->find_method(vmSymbols::object_initializer_name(
|
|
3217 |
), vmSymbols::void_method_signature());
|
|
3218 |
if (constructor != NULL && constructor->is_vanilla_constructor()) {
|
|
3219 |
v = true;
|
|
3220 |
}
|
|
3221 |
}
|
|
3222 |
assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor");
|
|
3223 |
#endif
|
|
3224 |
}
|
|
3225 |
|
|
3226 |
// If it cannot be fast-path allocated, set a bit in the layout helper.
|
|
3227 |
// See documentation of instanceKlass::can_be_fastpath_allocated().
|
|
3228 |
assert(k->size_helper() > 0, "layout_helper is initialized");
|
|
3229 |
if ((!RegisterFinalizersAtInit && k->has_finalizer())
|
|
3230 |
|| k->is_abstract() || k->is_interface()
|
|
3231 |
|| (k->name() == vmSymbols::java_lang_Class()
|
|
3232 |
&& k->class_loader() == NULL)
|
|
3233 |
|| k->size_helper() >= FastAllocateSizeLimit) {
|
|
3234 |
// Forbid fast-path allocation.
|
|
3235 |
jint lh = Klass::instance_layout_helper(k->size_helper(), true);
|
|
3236 |
k->set_layout_helper(lh);
|
|
3237 |
}
|
|
3238 |
}
|
|
3239 |
|
|
3240 |
|
|
3241 |
// utility method for appending and array with check for duplicates
|
|
3242 |
|
|
3243 |
void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) {
|
|
3244 |
// iterate over new interfaces
|
|
3245 |
for (int i = 0; i < ifs->length(); i++) {
|
|
3246 |
oop e = ifs->obj_at(i);
|
|
3247 |
assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking");
|
|
3248 |
// check for duplicates
|
|
3249 |
bool duplicate = false;
|
|
3250 |
for (int j = 0; j < index; j++) {
|
|
3251 |
if (result->obj_at(j) == e) {
|
|
3252 |
duplicate = true;
|
|
3253 |
break;
|
|
3254 |
}
|
|
3255 |
}
|
|
3256 |
// add new interface
|
|
3257 |
if (!duplicate) {
|
|
3258 |
result->obj_at_put(index++, e);
|
|
3259 |
}
|
|
3260 |
}
|
|
3261 |
}
|
|
3262 |
|
|
3263 |
objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) {
|
|
3264 |
// Compute maximum size for transitive interfaces
|
|
3265 |
int max_transitive_size = 0;
|
|
3266 |
int super_size = 0;
|
|
3267 |
// Add superclass transitive interfaces size
|
|
3268 |
if (super.not_null()) {
|
|
3269 |
super_size = super->transitive_interfaces()->length();
|
|
3270 |
max_transitive_size += super_size;
|
|
3271 |
}
|
|
3272 |
// Add local interfaces' super interfaces
|
|
3273 |
int local_size = local_ifs->length();
|
|
3274 |
for (int i = 0; i < local_size; i++) {
|
|
3275 |
klassOop l = klassOop(local_ifs->obj_at(i));
|
|
3276 |
max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length();
|
|
3277 |
}
|
|
3278 |
// Finally add local interfaces
|
|
3279 |
max_transitive_size += local_size;
|
|
3280 |
// Construct array
|
|
3281 |
objArrayHandle result;
|
|
3282 |
if (max_transitive_size == 0) {
|
|
3283 |
// no interfaces, use canonicalized array
|
|
3284 |
result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
3285 |
} else if (max_transitive_size == super_size) {
|
|
3286 |
// no new local interfaces added, share superklass' transitive interface array
|
|
3287 |
result = objArrayHandle(THREAD, super->transitive_interfaces());
|
|
3288 |
} else if (max_transitive_size == local_size) {
|
|
3289 |
// only local interfaces added, share local interface array
|
|
3290 |
result = local_ifs;
|
|
3291 |
} else {
|
|
3292 |
objArrayHandle nullHandle;
|
|
3293 |
objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle));
|
|
3294 |
result = objArrayHandle(THREAD, new_objarray);
|
|
3295 |
int index = 0;
|
|
3296 |
// Copy down from superclass
|
|
3297 |
if (super.not_null()) {
|
|
3298 |
append_interfaces(result, index, super->transitive_interfaces());
|
|
3299 |
}
|
|
3300 |
// Copy down from local interfaces' superinterfaces
|
|
3301 |
for (int i = 0; i < local_ifs->length(); i++) {
|
|
3302 |
klassOop l = klassOop(local_ifs->obj_at(i));
|
|
3303 |
append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces());
|
|
3304 |
}
|
|
3305 |
// Finally add local interfaces
|
|
3306 |
append_interfaces(result, index, local_ifs());
|
|
3307 |
|
|
3308 |
// Check if duplicates were removed
|
|
3309 |
if (index != max_transitive_size) {
|
|
3310 |
assert(index < max_transitive_size, "just checking");
|
|
3311 |
objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle));
|
|
3312 |
for (int i = 0; i < index; i++) {
|
|
3313 |
oop e = result->obj_at(i);
|
|
3314 |
assert(e != NULL, "just checking");
|
|
3315 |
new_result->obj_at_put(i, e);
|
|
3316 |
}
|
|
3317 |
result = objArrayHandle(THREAD, new_result);
|
|
3318 |
}
|
|
3319 |
}
|
|
3320 |
return result;
|
|
3321 |
}
|
|
3322 |
|
|
3323 |
|
|
3324 |
void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) {
|
|
3325 |
klassOop super = this_klass->super();
|
|
3326 |
if ((super != NULL) &&
|
|
3327 |
(!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) {
|
|
3328 |
ResourceMark rm(THREAD);
|
|
3329 |
Exceptions::fthrow(
|
|
3330 |
THREAD_AND_LOCATION,
|
|
3331 |
vmSymbolHandles::java_lang_IllegalAccessError(),
|
|
3332 |
"class %s cannot access its superclass %s",
|
|
3333 |
this_klass->external_name(),
|
|
3334 |
instanceKlass::cast(super)->external_name()
|
|
3335 |
);
|
|
3336 |
return;
|
|
3337 |
}
|
|
3338 |
}
|
|
3339 |
|
|
3340 |
|
|
3341 |
void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) {
|
|
3342 |
objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces());
|
|
3343 |
int lng = local_interfaces->length();
|
|
3344 |
for (int i = lng - 1; i >= 0; i--) {
|
|
3345 |
klassOop k = klassOop(local_interfaces->obj_at(i));
|
|
3346 |
assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface");
|
|
3347 |
if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) {
|
|
3348 |
ResourceMark rm(THREAD);
|
|
3349 |
Exceptions::fthrow(
|
|
3350 |
THREAD_AND_LOCATION,
|
|
3351 |
vmSymbolHandles::java_lang_IllegalAccessError(),
|
|
3352 |
"class %s cannot access its superinterface %s",
|
|
3353 |
this_klass->external_name(),
|
|
3354 |
instanceKlass::cast(k)->external_name()
|
|
3355 |
);
|
|
3356 |
return;
|
|
3357 |
}
|
|
3358 |
}
|
|
3359 |
}
|
|
3360 |
|
|
3361 |
|
|
3362 |
void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) {
|
|
3363 |
objArrayHandle methods (THREAD, this_klass->methods());
|
|
3364 |
int num_methods = methods->length();
|
|
3365 |
|
|
3366 |
// go thru each method and check if it overrides a final method
|
|
3367 |
for (int index = 0; index < num_methods; index++) {
|
|
3368 |
methodOop m = (methodOop)methods->obj_at(index);
|
|
3369 |
|
|
3370 |
// skip private, static and <init> methods
|
|
3371 |
if ((!m->is_private()) &&
|
|
3372 |
(!m->is_static()) &&
|
|
3373 |
(m->name() != vmSymbols::object_initializer_name())) {
|
|
3374 |
|
|
3375 |
symbolOop name = m->name();
|
|
3376 |
symbolOop signature = m->signature();
|
|
3377 |
klassOop k = this_klass->super();
|
|
3378 |
methodOop super_m = NULL;
|
|
3379 |
while (k != NULL) {
|
|
3380 |
// skip supers that don't have final methods.
|
|
3381 |
if (k->klass_part()->has_final_method()) {
|
|
3382 |
// lookup a matching method in the super class hierarchy
|
|
3383 |
super_m = instanceKlass::cast(k)->lookup_method(name, signature);
|
|
3384 |
if (super_m == NULL) {
|
|
3385 |
break; // didn't find any match; get out
|
|
3386 |
}
|
|
3387 |
|
|
3388 |
if (super_m->is_final() &&
|
|
3389 |
// matching method in super is final
|
|
3390 |
(Reflection::verify_field_access(this_klass->as_klassOop(),
|
|
3391 |
super_m->method_holder(),
|
|
3392 |
super_m->method_holder(),
|
|
3393 |
super_m->access_flags(), false))
|
|
3394 |
// this class can access super final method and therefore override
|
|
3395 |
) {
|
|
3396 |
ResourceMark rm(THREAD);
|
|
3397 |
Exceptions::fthrow(
|
|
3398 |
THREAD_AND_LOCATION,
|
|
3399 |
vmSymbolHandles::java_lang_VerifyError(),
|
|
3400 |
"class %s overrides final method %s.%s",
|
|
3401 |
this_klass->external_name(),
|
|
3402 |
name->as_C_string(),
|
|
3403 |
signature->as_C_string()
|
|
3404 |
);
|
|
3405 |
return;
|
|
3406 |
}
|
|
3407 |
|
|
3408 |
// continue to look from super_m's holder's super.
|
|
3409 |
k = instanceKlass::cast(super_m->method_holder())->super();
|
|
3410 |
continue;
|
|
3411 |
}
|
|
3412 |
|
|
3413 |
k = k->klass_part()->super();
|
|
3414 |
}
|
|
3415 |
}
|
|
3416 |
}
|
|
3417 |
}
|
|
3418 |
|
|
3419 |
|
|
3420 |
// assumes that this_klass is an interface
|
|
3421 |
void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) {
|
|
3422 |
assert(this_klass->is_interface(), "not an interface");
|
|
3423 |
objArrayHandle methods (THREAD, this_klass->methods());
|
|
3424 |
int num_methods = methods->length();
|
|
3425 |
|
|
3426 |
for (int index = 0; index < num_methods; index++) {
|
|
3427 |
methodOop m = (methodOop)methods->obj_at(index);
|
|
3428 |
// if m is static and not the init method, throw a verify error
|
|
3429 |
if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) {
|
|
3430 |
ResourceMark rm(THREAD);
|
|
3431 |
Exceptions::fthrow(
|
|
3432 |
THREAD_AND_LOCATION,
|
|
3433 |
vmSymbolHandles::java_lang_VerifyError(),
|
|
3434 |
"Illegal static method %s in interface %s",
|
|
3435 |
m->name()->as_C_string(),
|
|
3436 |
this_klass->external_name()
|
|
3437 |
);
|
|
3438 |
return;
|
|
3439 |
}
|
|
3440 |
}
|
|
3441 |
}
|
|
3442 |
|
|
3443 |
// utility methods for format checking
|
|
3444 |
|
|
3445 |
void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) {
|
|
3446 |
if (!_need_verify) { return; }
|
|
3447 |
|
|
3448 |
const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0;
|
|
3449 |
const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0;
|
|
3450 |
const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
3451 |
const bool is_super = (flags & JVM_ACC_SUPER) != 0;
|
|
3452 |
const bool is_enum = (flags & JVM_ACC_ENUM) != 0;
|
|
3453 |
const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0;
|
|
3454 |
const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
3455 |
|
|
3456 |
if ((is_abstract && is_final) ||
|
|
3457 |
(is_interface && !is_abstract) ||
|
|
3458 |
(is_interface && major_gte_15 && (is_super || is_enum)) ||
|
|
3459 |
(!is_interface && major_gte_15 && is_annotation)) {
|
|
3460 |
ResourceMark rm(THREAD);
|
|
3461 |
Exceptions::fthrow(
|
|
3462 |
THREAD_AND_LOCATION,
|
|
3463 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3464 |
"Illegal class modifiers in class %s: 0x%X",
|
|
3465 |
_class_name->as_C_string(), flags
|
|
3466 |
);
|
|
3467 |
return;
|
|
3468 |
}
|
|
3469 |
}
|
|
3470 |
|
|
3471 |
bool ClassFileParser::has_illegal_visibility(jint flags) {
|
|
3472 |
const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
3473 |
const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
|
|
3474 |
const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
3475 |
|
|
3476 |
return ((is_public && is_protected) ||
|
|
3477 |
(is_public && is_private) ||
|
|
3478 |
(is_protected && is_private));
|
|
3479 |
}
|
|
3480 |
|
|
3481 |
bool ClassFileParser::is_supported_version(u2 major, u2 minor) {
|
|
3482 |
return (major >= JAVA_MIN_SUPPORTED_VERSION) &&
|
|
3483 |
(major <= JAVA_MAX_SUPPORTED_VERSION) &&
|
|
3484 |
((major != JAVA_MAX_SUPPORTED_VERSION) ||
|
|
3485 |
(minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION));
|
|
3486 |
}
|
|
3487 |
|
|
3488 |
void ClassFileParser::verify_legal_field_modifiers(
|
|
3489 |
jint flags, bool is_interface, TRAPS) {
|
|
3490 |
if (!_need_verify) { return; }
|
|
3491 |
|
|
3492 |
const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
3493 |
const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
|
|
3494 |
const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
3495 |
const bool is_static = (flags & JVM_ACC_STATIC) != 0;
|
|
3496 |
const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
3497 |
const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0;
|
|
3498 |
const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0;
|
|
3499 |
const bool is_enum = (flags & JVM_ACC_ENUM) != 0;
|
|
3500 |
const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
3501 |
|
|
3502 |
bool is_illegal = false;
|
|
3503 |
|
|
3504 |
if (is_interface) {
|
|
3505 |
if (!is_public || !is_static || !is_final || is_private ||
|
|
3506 |
is_protected || is_volatile || is_transient ||
|
|
3507 |
(major_gte_15 && is_enum)) {
|
|
3508 |
is_illegal = true;
|
|
3509 |
}
|
|
3510 |
} else { // not interface
|
|
3511 |
if (has_illegal_visibility(flags) || (is_final && is_volatile)) {
|
|
3512 |
is_illegal = true;
|
|
3513 |
}
|
|
3514 |
}
|
|
3515 |
|
|
3516 |
if (is_illegal) {
|
|
3517 |
ResourceMark rm(THREAD);
|
|
3518 |
Exceptions::fthrow(
|
|
3519 |
THREAD_AND_LOCATION,
|
|
3520 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3521 |
"Illegal field modifiers in class %s: 0x%X",
|
|
3522 |
_class_name->as_C_string(), flags);
|
|
3523 |
return;
|
|
3524 |
}
|
|
3525 |
}
|
|
3526 |
|
|
3527 |
void ClassFileParser::verify_legal_method_modifiers(
|
|
3528 |
jint flags, bool is_interface, symbolHandle name, TRAPS) {
|
|
3529 |
if (!_need_verify) { return; }
|
|
3530 |
|
|
3531 |
const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
3532 |
const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
3533 |
const bool is_static = (flags & JVM_ACC_STATIC) != 0;
|
|
3534 |
const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
3535 |
const bool is_native = (flags & JVM_ACC_NATIVE) != 0;
|
|
3536 |
const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0;
|
|
3537 |
const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0;
|
|
3538 |
const bool is_strict = (flags & JVM_ACC_STRICT) != 0;
|
|
3539 |
const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0;
|
|
3540 |
const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
3541 |
const bool is_initializer = (name == vmSymbols::object_initializer_name());
|
|
3542 |
|
|
3543 |
bool is_illegal = false;
|
|
3544 |
|
|
3545 |
if (is_interface) {
|
|
3546 |
if (!is_abstract || !is_public || is_static || is_final ||
|
|
3547 |
is_native || (major_gte_15 && (is_synchronized || is_strict))) {
|
|
3548 |
is_illegal = true;
|
|
3549 |
}
|
|
3550 |
} else { // not interface
|
|
3551 |
if (is_initializer) {
|
|
3552 |
if (is_static || is_final || is_synchronized || is_native ||
|
|
3553 |
is_abstract || (major_gte_15 && is_bridge)) {
|
|
3554 |
is_illegal = true;
|
|
3555 |
}
|
|
3556 |
} else { // not initializer
|
|
3557 |
if (is_abstract) {
|
|
3558 |
if ((is_final || is_native || is_private || is_static ||
|
|
3559 |
(major_gte_15 && (is_synchronized || is_strict)))) {
|
|
3560 |
is_illegal = true;
|
|
3561 |
}
|
|
3562 |
}
|
|
3563 |
if (has_illegal_visibility(flags)) {
|
|
3564 |
is_illegal = true;
|
|
3565 |
}
|
|
3566 |
}
|
|
3567 |
}
|
|
3568 |
|
|
3569 |
if (is_illegal) {
|
|
3570 |
ResourceMark rm(THREAD);
|
|
3571 |
Exceptions::fthrow(
|
|
3572 |
THREAD_AND_LOCATION,
|
|
3573 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3574 |
"Method %s in class %s has illegal modifiers: 0x%X",
|
|
3575 |
name->as_C_string(), _class_name->as_C_string(), flags);
|
|
3576 |
return;
|
|
3577 |
}
|
|
3578 |
}
|
|
3579 |
|
|
3580 |
void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) {
|
|
3581 |
assert(_need_verify, "only called when _need_verify is true");
|
|
3582 |
int i = 0;
|
|
3583 |
int count = length >> 2;
|
|
3584 |
for (int k=0; k<count; k++) {
|
|
3585 |
unsigned char b0 = buffer[i];
|
|
3586 |
unsigned char b1 = buffer[i+1];
|
|
3587 |
unsigned char b2 = buffer[i+2];
|
|
3588 |
unsigned char b3 = buffer[i+3];
|
|
3589 |
// For an unsigned char v,
|
|
3590 |
// (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128;
|
|
3591 |
// (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128.
|
|
3592 |
unsigned char res = b0 | b0 - 1 |
|
|
3593 |
b1 | b1 - 1 |
|
|
3594 |
b2 | b2 - 1 |
|
|
3595 |
b3 | b3 - 1;
|
|
3596 |
if (res >= 128) break;
|
|
3597 |
i += 4;
|
|
3598 |
}
|
|
3599 |
for(; i < length; i++) {
|
|
3600 |
unsigned short c;
|
|
3601 |
// no embedded zeros
|
|
3602 |
guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
3603 |
if(buffer[i] < 128) {
|
|
3604 |
continue;
|
|
3605 |
}
|
|
3606 |
if ((i + 5) < length) { // see if it's legal supplementary character
|
|
3607 |
if (UTF8::is_supplementary_character(&buffer[i])) {
|
|
3608 |
c = UTF8::get_supplementary_character(&buffer[i]);
|
|
3609 |
i += 5;
|
|
3610 |
continue;
|
|
3611 |
}
|
|
3612 |
}
|
|
3613 |
switch (buffer[i] >> 4) {
|
|
3614 |
default: break;
|
|
3615 |
case 0x8: case 0x9: case 0xA: case 0xB: case 0xF:
|
|
3616 |
classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
3617 |
case 0xC: case 0xD: // 110xxxxx 10xxxxxx
|
|
3618 |
c = (buffer[i] & 0x1F) << 6;
|
|
3619 |
i++;
|
|
3620 |
if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) {
|
|
3621 |
c += buffer[i] & 0x3F;
|
|
3622 |
if (_major_version <= 47 || c == 0 || c >= 0x80) {
|
|
3623 |
// for classes with major > 47, c must a null or a character in its shortest form
|
|
3624 |
break;
|
|
3625 |
}
|
|
3626 |
}
|
|
3627 |
classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
3628 |
case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx
|
|
3629 |
c = (buffer[i] & 0xF) << 12;
|
|
3630 |
i += 2;
|
|
3631 |
if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) {
|
|
3632 |
c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F);
|
|
3633 |
if (_major_version <= 47 || c >= 0x800) {
|
|
3634 |
// for classes with major > 47, c must be in its shortest form
|
|
3635 |
break;
|
|
3636 |
}
|
|
3637 |
}
|
|
3638 |
classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
3639 |
} // end of switch
|
|
3640 |
} // end of for
|
|
3641 |
}
|
|
3642 |
|
|
3643 |
// Checks if name is a legal class name.
|
|
3644 |
void ClassFileParser::verify_legal_class_name(symbolHandle name, TRAPS) {
|
|
3645 |
if (!_need_verify || _relax_verify) { return; }
|
|
3646 |
|
|
3647 |
char buf[fixed_buffer_size];
|
|
3648 |
char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
3649 |
unsigned int length = name->utf8_length();
|
|
3650 |
bool legal = false;
|
|
3651 |
|
|
3652 |
if (length > 0) {
|
|
3653 |
char* p;
|
|
3654 |
if (bytes[0] == JVM_SIGNATURE_ARRAY) {
|
|
3655 |
p = skip_over_field_signature(bytes, false, length, CHECK);
|
|
3656 |
legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
3657 |
} else if (_major_version < JAVA_1_5_VERSION) {
|
|
3658 |
if (bytes[0] != '<') {
|
|
3659 |
p = skip_over_field_name(bytes, true, length);
|
|
3660 |
legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
3661 |
}
|
|
3662 |
} else {
|
|
3663 |
// 4900761: relax the constraints based on JSR202 spec
|
|
3664 |
// Class names may be drawn from the entire Unicode character set.
|
|
3665 |
// Identifiers between '/' must be unqualified names.
|
|
3666 |
// The utf8 string has been verified when parsing cpool entries.
|
|
3667 |
legal = verify_unqualified_name(bytes, length, LegalClass);
|
|
3668 |
}
|
|
3669 |
}
|
|
3670 |
if (!legal) {
|
|
3671 |
ResourceMark rm(THREAD);
|
|
3672 |
Exceptions::fthrow(
|
|
3673 |
THREAD_AND_LOCATION,
|
|
3674 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3675 |
"Illegal class name \"%s\" in class file %s", bytes,
|
|
3676 |
_class_name->as_C_string()
|
|
3677 |
);
|
|
3678 |
return;
|
|
3679 |
}
|
|
3680 |
}
|
|
3681 |
|
|
3682 |
// Checks if name is a legal field name.
|
|
3683 |
void ClassFileParser::verify_legal_field_name(symbolHandle name, TRAPS) {
|
|
3684 |
if (!_need_verify || _relax_verify) { return; }
|
|
3685 |
|
|
3686 |
char buf[fixed_buffer_size];
|
|
3687 |
char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
3688 |
unsigned int length = name->utf8_length();
|
|
3689 |
bool legal = false;
|
|
3690 |
|
|
3691 |
if (length > 0) {
|
|
3692 |
if (_major_version < JAVA_1_5_VERSION) {
|
|
3693 |
if (bytes[0] != '<') {
|
|
3694 |
char* p = skip_over_field_name(bytes, false, length);
|
|
3695 |
legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
3696 |
}
|
|
3697 |
} else {
|
|
3698 |
// 4881221: relax the constraints based on JSR202 spec
|
|
3699 |
legal = verify_unqualified_name(bytes, length, LegalField);
|
|
3700 |
}
|
|
3701 |
}
|
|
3702 |
|
|
3703 |
if (!legal) {
|
|
3704 |
ResourceMark rm(THREAD);
|
|
3705 |
Exceptions::fthrow(
|
|
3706 |
THREAD_AND_LOCATION,
|
|
3707 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3708 |
"Illegal field name \"%s\" in class %s", bytes,
|
|
3709 |
_class_name->as_C_string()
|
|
3710 |
);
|
|
3711 |
return;
|
|
3712 |
}
|
|
3713 |
}
|
|
3714 |
|
|
3715 |
// Checks if name is a legal method name.
|
|
3716 |
void ClassFileParser::verify_legal_method_name(symbolHandle name, TRAPS) {
|
|
3717 |
if (!_need_verify || _relax_verify) { return; }
|
|
3718 |
|
|
3719 |
assert(!name.is_null(), "method name is null");
|
|
3720 |
char buf[fixed_buffer_size];
|
|
3721 |
char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
3722 |
unsigned int length = name->utf8_length();
|
|
3723 |
bool legal = false;
|
|
3724 |
|
|
3725 |
if (length > 0) {
|
|
3726 |
if (bytes[0] == '<') {
|
|
3727 |
if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) {
|
|
3728 |
legal = true;
|
|
3729 |
}
|
|
3730 |
} else if (_major_version < JAVA_1_5_VERSION) {
|
|
3731 |
char* p;
|
|
3732 |
p = skip_over_field_name(bytes, false, length);
|
|
3733 |
legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
3734 |
} else {
|
|
3735 |
// 4881221: relax the constraints based on JSR202 spec
|
|
3736 |
legal = verify_unqualified_name(bytes, length, LegalMethod);
|
|
3737 |
}
|
|
3738 |
}
|
|
3739 |
|
|
3740 |
if (!legal) {
|
|
3741 |
ResourceMark rm(THREAD);
|
|
3742 |
Exceptions::fthrow(
|
|
3743 |
THREAD_AND_LOCATION,
|
|
3744 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3745 |
"Illegal method name \"%s\" in class %s", bytes,
|
|
3746 |
_class_name->as_C_string()
|
|
3747 |
);
|
|
3748 |
return;
|
|
3749 |
}
|
|
3750 |
}
|
|
3751 |
|
|
3752 |
|
|
3753 |
// Checks if signature is a legal field signature.
|
|
3754 |
void ClassFileParser::verify_legal_field_signature(symbolHandle name, symbolHandle signature, TRAPS) {
|
|
3755 |
if (!_need_verify) { return; }
|
|
3756 |
|
|
3757 |
char buf[fixed_buffer_size];
|
|
3758 |
char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
3759 |
unsigned int length = signature->utf8_length();
|
|
3760 |
char* p = skip_over_field_signature(bytes, false, length, CHECK);
|
|
3761 |
|
|
3762 |
if (p == NULL || (p - bytes) != (int)length) {
|
|
3763 |
ResourceMark rm(THREAD);
|
|
3764 |
Exceptions::fthrow(
|
|
3765 |
THREAD_AND_LOCATION,
|
|
3766 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3767 |
"Field \"%s\" in class %s has illegal signature \"%s\"",
|
|
3768 |
name->as_C_string(), _class_name->as_C_string(), bytes
|
|
3769 |
);
|
|
3770 |
return;
|
|
3771 |
}
|
|
3772 |
}
|
|
3773 |
|
|
3774 |
// Checks if signature is a legal method signature.
|
|
3775 |
// Returns number of parameters
|
|
3776 |
int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHandle signature, TRAPS) {
|
|
3777 |
if (!_need_verify) {
|
|
3778 |
// make sure caller's args_size will be less than 0 even for non-static
|
|
3779 |
// method so it will be recomputed in compute_size_of_parameters().
|
|
3780 |
return -2;
|
|
3781 |
}
|
|
3782 |
|
|
3783 |
unsigned int args_size = 0;
|
|
3784 |
char buf[fixed_buffer_size];
|
|
3785 |
char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
3786 |
unsigned int length = signature->utf8_length();
|
|
3787 |
char* nextp;
|
|
3788 |
|
|
3789 |
// The first character must be a '('
|
|
3790 |
if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) {
|
|
3791 |
length--;
|
|
3792 |
// Skip over legal field signatures
|
|
3793 |
nextp = skip_over_field_signature(p, false, length, CHECK_0);
|
|
3794 |
while ((length > 0) && (nextp != NULL)) {
|
|
3795 |
args_size++;
|
|
3796 |
if (p[0] == 'J' || p[0] == 'D') {
|
|
3797 |
args_size++;
|
|
3798 |
}
|
|
3799 |
length -= nextp - p;
|
|
3800 |
p = nextp;
|
|
3801 |
nextp = skip_over_field_signature(p, false, length, CHECK_0);
|
|
3802 |
}
|
|
3803 |
// The first non-signature thing better be a ')'
|
|
3804 |
if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) {
|
|
3805 |
length--;
|
|
3806 |
if (name->utf8_length() > 0 && name->byte_at(0) == '<') {
|
|
3807 |
// All internal methods must return void
|
|
3808 |
if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) {
|
|
3809 |
return args_size;
|
|
3810 |
}
|
|
3811 |
} else {
|
|
3812 |
// Now we better just have a return value
|
|
3813 |
nextp = skip_over_field_signature(p, true, length, CHECK_0);
|
|
3814 |
if (nextp && ((int)length == (nextp - p))) {
|
|
3815 |
return args_size;
|
|
3816 |
}
|
|
3817 |
}
|
|
3818 |
}
|
|
3819 |
}
|
|
3820 |
// Report error
|
|
3821 |
ResourceMark rm(THREAD);
|
|
3822 |
Exceptions::fthrow(
|
|
3823 |
THREAD_AND_LOCATION,
|
|
3824 |
vmSymbolHandles::java_lang_ClassFormatError(),
|
|
3825 |
"Method \"%s\" in class %s has illegal signature \"%s\"",
|
|
3826 |
name->as_C_string(), _class_name->as_C_string(), p
|
|
3827 |
);
|
|
3828 |
return 0;
|
|
3829 |
}
|
|
3830 |
|
|
3831 |
|
|
3832 |
// Unqualified names may not contain the characters '.', ';', or '/'.
|
|
3833 |
// Method names also may not contain the characters '<' or '>', unless <init> or <clinit>.
|
|
3834 |
// Note that method names may not be <init> or <clinit> in this method.
|
|
3835 |
// Because these names have been checked as special cases before calling this method
|
|
3836 |
// in verify_legal_method_name.
|
|
3837 |
bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) {
|
|
3838 |
jchar ch;
|
|
3839 |
|
|
3840 |
for (char* p = name; p != name + length; ) {
|
|
3841 |
ch = *p;
|
|
3842 |
if (ch < 128) {
|
|
3843 |
p++;
|
|
3844 |
if (ch == '.' || ch == ';') {
|
|
3845 |
return false; // do not permit '.' or ';'
|
|
3846 |
}
|
|
3847 |
if (type != LegalClass && ch == '/') {
|
|
3848 |
return false; // do not permit '/' unless it's class name
|
|
3849 |
}
|
|
3850 |
if (type == LegalMethod && (ch == '<' || ch == '>')) {
|
|
3851 |
return false; // do not permit '<' or '>' in method names
|
|
3852 |
}
|
|
3853 |
} else {
|
|
3854 |
char* tmp_p = UTF8::next(p, &ch);
|
|
3855 |
p = tmp_p;
|
|
3856 |
}
|
|
3857 |
}
|
|
3858 |
return true;
|
|
3859 |
}
|
|
3860 |
|
|
3861 |
|
|
3862 |
// Take pointer to a string. Skip over the longest part of the string that could
|
|
3863 |
// be taken as a fieldname. Allow '/' if slash_ok is true.
|
|
3864 |
// Return a pointer to just past the fieldname.
|
|
3865 |
// Return NULL if no fieldname at all was found, or in the case of slash_ok
|
|
3866 |
// being true, we saw consecutive slashes (meaning we were looking for a
|
|
3867 |
// qualified path but found something that was badly-formed).
|
|
3868 |
char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) {
|
|
3869 |
char* p;
|
|
3870 |
jchar ch;
|
|
3871 |
jboolean last_is_slash = false;
|
|
3872 |
jboolean not_first_ch = false;
|
|
3873 |
|
|
3874 |
for (p = name; p != name + length; not_first_ch = true) {
|
|
3875 |
char* old_p = p;
|
|
3876 |
ch = *p;
|
|
3877 |
if (ch < 128) {
|
|
3878 |
p++;
|
|
3879 |
// quick check for ascii
|
|
3880 |
if ((ch >= 'a' && ch <= 'z') ||
|
|
3881 |
(ch >= 'A' && ch <= 'Z') ||
|
|
3882 |
(ch == '_' || ch == '$') ||
|
|
3883 |
(not_first_ch && ch >= '0' && ch <= '9')) {
|
|
3884 |
last_is_slash = false;
|
|
3885 |
continue;
|
|
3886 |
}
|
|
3887 |
if (slash_ok && ch == '/') {
|
|
3888 |
if (last_is_slash) {
|
|
3889 |
return NULL; // Don't permit consecutive slashes
|
|
3890 |
}
|
|
3891 |
last_is_slash = true;
|
|
3892 |
continue;
|
|
3893 |
}
|
|
3894 |
} else {
|
|
3895 |
jint unicode_ch;
|
|
3896 |
char* tmp_p = UTF8::next_character(p, &unicode_ch);
|
|
3897 |
p = tmp_p;
|
|
3898 |
last_is_slash = false;
|
|
3899 |
// Check if ch is Java identifier start or is Java identifier part
|
|
3900 |
// 4672820: call java.lang.Character methods directly without generating separate tables.
|
|
3901 |
EXCEPTION_MARK;
|
|
3902 |
instanceKlassHandle klass (THREAD, SystemDictionary::char_klass());
|
|
3903 |
|
|
3904 |
// return value
|
|
3905 |
JavaValue result(T_BOOLEAN);
|
|
3906 |
// Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart
|
|
3907 |
JavaCallArguments args;
|
|
3908 |
args.push_int(unicode_ch);
|
|
3909 |
|
|
3910 |
// public static boolean isJavaIdentifierStart(char ch);
|
|
3911 |
JavaCalls::call_static(&result,
|
|
3912 |
klass,
|
|
3913 |
vmSymbolHandles::isJavaIdentifierStart_name(),
|
|
3914 |
vmSymbolHandles::int_bool_signature(),
|
|
3915 |
&args,
|
|
3916 |
THREAD);
|
|
3917 |
|
|
3918 |
if (HAS_PENDING_EXCEPTION) {
|
|
3919 |
CLEAR_PENDING_EXCEPTION;
|
|
3920 |
return 0;
|
|
3921 |
}
|
|
3922 |
if (result.get_jboolean()) {
|
|
3923 |
continue;
|
|
3924 |
}
|
|
3925 |
|
|
3926 |
if (not_first_ch) {
|
|
3927 |
// public static boolean isJavaIdentifierPart(char ch);
|
|
3928 |
JavaCalls::call_static(&result,
|
|
3929 |
klass,
|
|
3930 |
vmSymbolHandles::isJavaIdentifierPart_name(),
|
|
3931 |
vmSymbolHandles::int_bool_signature(),
|
|
3932 |
&args,
|
|
3933 |
THREAD);
|
|
3934 |
|
|
3935 |
if (HAS_PENDING_EXCEPTION) {
|
|
3936 |
CLEAR_PENDING_EXCEPTION;
|
|
3937 |
return 0;
|
|
3938 |
}
|
|
3939 |
|
|
3940 |
if (result.get_jboolean()) {
|
|
3941 |
continue;
|
|
3942 |
}
|
|
3943 |
}
|
|
3944 |
}
|
|
3945 |
return (not_first_ch) ? old_p : NULL;
|
|
3946 |
}
|
|
3947 |
return (not_first_ch) ? p : NULL;
|
|
3948 |
}
|
|
3949 |
|
|
3950 |
|
|
3951 |
// Take pointer to a string. Skip over the longest part of the string that could
|
|
3952 |
// be taken as a field signature. Allow "void" if void_ok.
|
|
3953 |
// Return a pointer to just past the signature.
|
|
3954 |
// Return NULL if no legal signature is found.
|
|
3955 |
char* ClassFileParser::skip_over_field_signature(char* signature,
|
|
3956 |
bool void_ok,
|
|
3957 |
unsigned int length,
|
|
3958 |
TRAPS) {
|
|
3959 |
unsigned int array_dim = 0;
|
|
3960 |
while (length > 0) {
|
|
3961 |
switch (signature[0]) {
|
|
3962 |
case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; }
|
|
3963 |
case JVM_SIGNATURE_BOOLEAN:
|
|
3964 |
case JVM_SIGNATURE_BYTE:
|
|
3965 |
case JVM_SIGNATURE_CHAR:
|
|
3966 |
case JVM_SIGNATURE_SHORT:
|
|
3967 |
case JVM_SIGNATURE_INT:
|
|
3968 |
case JVM_SIGNATURE_FLOAT:
|
|
3969 |
case JVM_SIGNATURE_LONG:
|
|
3970 |
case JVM_SIGNATURE_DOUBLE:
|
|
3971 |
return signature + 1;
|
|
3972 |
case JVM_SIGNATURE_CLASS: {
|
|
3973 |
if (_major_version < JAVA_1_5_VERSION) {
|
|
3974 |
// Skip over the class name if one is there
|
|
3975 |
char* p = skip_over_field_name(signature + 1, true, --length);
|
|
3976 |
|
|
3977 |
// The next character better be a semicolon
|
|
3978 |
if (p && (p - signature) > 1 && p[0] == ';') {
|
|
3979 |
return p + 1;
|
|
3980 |
}
|
|
3981 |
} else {
|
|
3982 |
// 4900761: For class version > 48, any unicode is allowed in class name.
|
|
3983 |
length--;
|
|
3984 |
signature++;
|
|
3985 |
while (length > 0 && signature[0] != ';') {
|
|
3986 |
if (signature[0] == '.') {
|
|
3987 |
classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0);
|
|
3988 |
}
|
|
3989 |
length--;
|
|
3990 |
signature++;
|
|
3991 |
}
|
|
3992 |
if (signature[0] == ';') { return signature + 1; }
|
|
3993 |
}
|
|
3994 |
|
|
3995 |
return NULL;
|
|
3996 |
}
|
|
3997 |
case JVM_SIGNATURE_ARRAY:
|
|
3998 |
array_dim++;
|
|
3999 |
if (array_dim > 255) {
|
|
4000 |
// 4277370: array descriptor is valid only if it represents 255 or fewer dimensions.
|
|
4001 |
classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0);
|
|
4002 |
}
|
|
4003 |
// The rest of what's there better be a legal signature
|
|
4004 |
signature++;
|
|
4005 |
length--;
|
|
4006 |
void_ok = false;
|
|
4007 |
break;
|
|
4008 |
|
|
4009 |
default:
|
|
4010 |
return NULL;
|
|
4011 |
}
|
|
4012 |
}
|
|
4013 |
return NULL;
|
|
4014 |
}
|