author | jiangli |
Fri, 13 Jul 2012 20:14:27 -0400 | |
changeset 13286 | b8b0898d5f3a |
parent 13201 | 69f157caabcc |
parent 13282 | 9872915dd78d |
child 13728 | 882756847a04 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2005, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/symbolTable.hpp" |
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#include "interpreter/bytecodeStream.hpp" |
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#include "oops/fieldStreams.hpp" |
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#include "prims/jvmtiClassFileReconstituter.hpp" |
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#include "runtime/signature.hpp" |
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#ifdef TARGET_ARCH_x86 |
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# include "bytes_x86.hpp" |
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#endif |
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#ifdef TARGET_ARCH_sparc |
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# include "bytes_sparc.hpp" |
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#endif |
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#ifdef TARGET_ARCH_zero |
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# include "bytes_zero.hpp" |
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#endif |
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#ifdef TARGET_ARCH_arm |
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# include "bytes_arm.hpp" |
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#endif |
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#ifdef TARGET_ARCH_ppc |
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# include "bytes_ppc.hpp" |
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#endif |
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// FIXME: add Deprecated, LVTT attributes |
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// FIXME: fix Synthetic attribute |
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// FIXME: per Serguei, add error return handling for constantPoolOopDesc::copy_cpool_bytes() |
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// Write the field information portion of ClassFile structure |
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// JVMSpec| u2 fields_count; |
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// JVMSpec| field_info fields[fields_count]; |
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void JvmtiClassFileReconstituter::write_field_infos() { |
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HandleMark hm(thread()); |
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objArrayHandle fields_anno(thread(), ikh()->fields_annotations()); |
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// Compute the real number of Java fields |
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int java_fields = ikh()->java_fields_count(); |
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write_u2(java_fields); |
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for (JavaFieldStream fs(ikh()); !fs.done(); fs.next()) { |
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AccessFlags access_flags = fs.access_flags(); |
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int name_index = fs.name_index(); |
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int signature_index = fs.signature_index(); |
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int initial_value_index = fs.initval_index(); |
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guarantee(name_index != 0 && signature_index != 0, "bad constant pool index for field"); |
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// int offset = ikh()->field_offset( index ); |
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int generic_signature_index = fs.generic_signature_index(); |
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typeArrayHandle anno(thread(), fields_anno.not_null() ? |
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(typeArrayOop)(fields_anno->obj_at(fs.index())) : |
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(typeArrayOop)NULL); |
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// JVMSpec| field_info { |
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// JVMSpec| u2 access_flags; |
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// JVMSpec| u2 name_index; |
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// JVMSpec| u2 descriptor_index; |
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// JVMSpec| u2 attributes_count; |
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// JVMSpec| attribute_info attributes[attributes_count]; |
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// JVMSpec| } |
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write_u2(access_flags.as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); |
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write_u2(name_index); |
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write_u2(signature_index); |
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int attr_count = 0; |
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if (initial_value_index != 0) { |
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++attr_count; |
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} |
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if (access_flags.is_synthetic()) { |
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// ++attr_count; |
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} |
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if (generic_signature_index != 0) { |
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++attr_count; |
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} |
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if (anno.not_null()) { |
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++attr_count; // has RuntimeVisibleAnnotations attribute |
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} |
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write_u2(attr_count); |
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if (initial_value_index != 0) { |
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write_attribute_name_index("ConstantValue"); |
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write_u4(2); //length always 2 |
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write_u2(initial_value_index); |
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} |
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if (access_flags.is_synthetic()) { |
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// write_synthetic_attribute(); |
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} |
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if (generic_signature_index != 0) { |
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write_signature_attribute(generic_signature_index); |
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} |
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if (anno.not_null()) { |
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write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
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} |
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} |
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} |
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||
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// Write Code attribute |
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// JVMSpec| Code_attribute { |
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// JVMSpec| u2 attribute_name_index; |
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// JVMSpec| u4 attribute_length; |
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// JVMSpec| u2 max_stack; |
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// JVMSpec| u2 max_locals; |
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// JVMSpec| u4 code_length; |
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// JVMSpec| u1 code[code_length]; |
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// JVMSpec| u2 exception_table_length; |
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// JVMSpec| { u2 start_pc; |
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// JVMSpec| u2 end_pc; |
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// JVMSpec| u2 handler_pc; |
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// JVMSpec| u2 catch_type; |
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// JVMSpec| } exception_table[exception_table_length]; |
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// JVMSpec| u2 attributes_count; |
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// JVMSpec| attribute_info attributes[attributes_count]; |
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// JVMSpec| } |
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void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) { |
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constMethodHandle const_method(thread(), method->constMethod()); |
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u2 line_num_cnt = 0; |
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int stackmap_len = 0; |
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int local_variable_table_length = 0; |
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// compute number and length of attributes |
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int attr_count = 0; |
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int attr_size = 0; |
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if (const_method->has_linenumber_table()) { |
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line_num_cnt = line_number_table_entries(method); |
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if (line_num_cnt != 0) { |
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++attr_count; |
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// Compute the complete size of the line number table attribute: |
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// LineNumberTable_attribute { |
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// u2 attribute_name_index; |
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// u4 attribute_length; |
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// u2 line_number_table_length; |
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// { u2 start_pc; |
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// u2 line_number; |
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// } line_number_table[line_number_table_length]; |
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// } |
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attr_size += 2 + 4 + 2 + line_num_cnt * (2 + 2); |
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} |
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} |
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if (method->has_stackmap_table()) { |
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stackmap_len = method->stackmap_data()->length(); |
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if (stackmap_len != 0) { |
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++attr_count; |
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// Compute the size of the stack map table attribute (VM stores raw): |
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// StackMapTable_attribute { |
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// u2 attribute_name_index; |
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// u4 attribute_length; |
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// u2 number_of_entries; |
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// stack_map_frame_entries[number_of_entries]; |
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// } |
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attr_size += 2 + 4 + stackmap_len; |
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} |
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} |
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if (method->has_localvariable_table()) { |
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local_variable_table_length = method->localvariable_table_length(); |
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++attr_count; |
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if (local_variable_table_length != 0) { |
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// Compute the size of the local variable table attribute (VM stores raw): |
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// LocalVariableTable_attribute { |
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// u2 attribute_name_index; |
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// u4 attribute_length; |
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// u2 local_variable_table_length; |
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// { |
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// u2 start_pc; |
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// u2 length; |
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// u2 name_index; |
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// u2 descriptor_index; |
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// u2 index; |
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// } |
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attr_size += 2 + 4 + 2 + local_variable_table_length * (2 + 2 + 2 + 2 + 2); |
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} |
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} |
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ExceptionTable exception_table(method()); |
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int exception_table_length = exception_table.length(); |
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int code_size = const_method->code_size(); |
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int size = |
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2+2+4 + // max_stack, max_locals, code_length |
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code_size + // code |
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2 + // exception_table_length |
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(2+2+2+2) * exception_table_length + // exception_table |
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2 + // attributes_count |
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attr_size; // attributes |
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write_attribute_name_index("Code"); |
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write_u4(size); |
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write_u2(method->max_stack()); |
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write_u2(method->max_locals()); |
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write_u4(code_size); |
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copy_bytecodes(method, (unsigned char*)writeable_address(code_size)); |
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write_u2(exception_table_length); |
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for (int index = 0; index < exception_table_length; index++) { |
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write_u2(exception_table.start_pc(index)); |
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write_u2(exception_table.end_pc(index)); |
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write_u2(exception_table.handler_pc(index)); |
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write_u2(exception_table.catch_type_index(index)); |
1 | 217 |
} |
218 |
write_u2(attr_count); |
|
219 |
if (line_num_cnt != 0) { |
|
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write_line_number_table_attribute(method, line_num_cnt); |
|
221 |
} |
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if (stackmap_len != 0) { |
|
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write_stackmap_table_attribute(method, stackmap_len); |
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} |
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if (local_variable_table_length != 0) { |
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write_local_variable_table_attribute(method, local_variable_table_length); |
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} |
1 | 228 |
} |
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||
230 |
// Write Exceptions attribute |
|
231 |
// JVMSpec| Exceptions_attribute { |
|
232 |
// JVMSpec| u2 attribute_name_index; |
|
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// JVMSpec| u4 attribute_length; |
|
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// JVMSpec| u2 number_of_exceptions; |
|
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// JVMSpec| u2 exception_index_table[number_of_exceptions]; |
|
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// JVMSpec| } |
|
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void JvmtiClassFileReconstituter::write_exceptions_attribute(constMethodHandle const_method) { |
|
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CheckedExceptionElement* checked_exceptions = const_method->checked_exceptions_start(); |
|
239 |
int checked_exceptions_length = const_method->checked_exceptions_length(); |
|
240 |
int size = |
|
241 |
2 + // number_of_exceptions |
|
242 |
2 * checked_exceptions_length; // exception_index_table |
|
243 |
||
244 |
write_attribute_name_index("Exceptions"); |
|
245 |
write_u4(size); |
|
246 |
write_u2(checked_exceptions_length); |
|
247 |
for (int index = 0; index < checked_exceptions_length; index++) { |
|
248 |
write_u2(checked_exceptions[index].class_cp_index); |
|
249 |
} |
|
250 |
} |
|
251 |
||
252 |
// Write SourceFile attribute |
|
253 |
// JVMSpec| SourceFile_attribute { |
|
254 |
// JVMSpec| u2 attribute_name_index; |
|
255 |
// JVMSpec| u4 attribute_length; |
|
256 |
// JVMSpec| u2 sourcefile_index; |
|
257 |
// JVMSpec| } |
|
258 |
void JvmtiClassFileReconstituter::write_source_file_attribute() { |
|
259 |
assert(ikh()->source_file_name() != NULL, "caller must check"); |
|
260 |
||
261 |
write_attribute_name_index("SourceFile"); |
|
262 |
write_u4(2); // always length 2 |
|
263 |
write_u2(symbol_to_cpool_index(ikh()->source_file_name())); |
|
264 |
} |
|
265 |
||
266 |
// Write SourceDebugExtension attribute |
|
267 |
// JSR45| SourceDebugExtension_attribute { |
|
268 |
// JSR45| u2 attribute_name_index; |
|
269 |
// JSR45| u4 attribute_length; |
|
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// JSR45| u1 debug_extension[attribute_length]; |
1 | 271 |
// JSR45| } |
272 |
void JvmtiClassFileReconstituter::write_source_debug_extension_attribute() { |
|
273 |
assert(ikh()->source_debug_extension() != NULL, "caller must check"); |
|
274 |
||
275 |
write_attribute_name_index("SourceDebugExtension"); |
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int len = (int)strlen(ikh()->source_debug_extension()); |
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write_u4(len); |
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u1* ext = (u1*)ikh()->source_debug_extension(); |
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for (int i=0; i<len; i++) { |
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write_u1(ext[i]); |
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281 |
} |
1 | 282 |
} |
283 |
||
284 |
// Write (generic) Signature attribute |
|
285 |
// JVMSpec| Signature_attribute { |
|
286 |
// JVMSpec| u2 attribute_name_index; |
|
287 |
// JVMSpec| u4 attribute_length; |
|
288 |
// JVMSpec| u2 signature_index; |
|
289 |
// JVMSpec| } |
|
290 |
void JvmtiClassFileReconstituter::write_signature_attribute(u2 generic_signature_index) { |
|
291 |
write_attribute_name_index("Signature"); |
|
292 |
write_u4(2); // always length 2 |
|
293 |
write_u2(generic_signature_index); |
|
294 |
} |
|
295 |
||
296 |
// Compute the number of entries in the InnerClasses attribute |
|
297 |
u2 JvmtiClassFileReconstituter::inner_classes_attribute_length() { |
|
12231
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298 |
InnerClassesIterator iter(ikh()); |
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|
299 |
return iter.length(); |
1 | 300 |
} |
301 |
||
302 |
// Write an annotation attribute. The VM stores them in raw form, so all we need |
|
303 |
// to do is add the attrubute name and fill in the length. |
|
304 |
// JSR202| *Annotations_attribute { |
|
305 |
// JSR202| u2 attribute_name_index; |
|
306 |
// JSR202| u4 attribute_length; |
|
307 |
// JSR202| ... |
|
308 |
// JSR202| } |
|
309 |
void JvmtiClassFileReconstituter::write_annotations_attribute(const char* attr_name, |
|
310 |
typeArrayHandle annos) { |
|
311 |
u4 length = annos->length(); |
|
312 |
write_attribute_name_index(attr_name); |
|
313 |
write_u4(length); |
|
314 |
memcpy(writeable_address(length), annos->byte_at_addr(0), length); |
|
315 |
} |
|
316 |
||
317 |
||
318 |
// Write InnerClasses attribute |
|
319 |
// JVMSpec| InnerClasses_attribute { |
|
320 |
// JVMSpec| u2 attribute_name_index; |
|
321 |
// JVMSpec| u4 attribute_length; |
|
322 |
// JVMSpec| u2 number_of_classes; |
|
323 |
// JVMSpec| { u2 inner_class_info_index; |
|
324 |
// JVMSpec| u2 outer_class_info_index; |
|
325 |
// JVMSpec| u2 inner_name_index; |
|
326 |
// JVMSpec| u2 inner_class_access_flags; |
|
327 |
// JVMSpec| } classes[number_of_classes]; |
|
328 |
// JVMSpec| } |
|
329 |
void JvmtiClassFileReconstituter::write_inner_classes_attribute(int length) { |
|
12231
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|
330 |
InnerClassesIterator iter(ikh()); |
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changeset
|
331 |
guarantee(iter.length() != 0 && iter.length() == length, |
1 | 332 |
"caller must check"); |
333 |
u2 entry_count = length / instanceKlass::inner_class_next_offset; |
|
334 |
u4 size = 2 + entry_count * (2+2+2+2); |
|
335 |
||
336 |
write_attribute_name_index("InnerClasses"); |
|
337 |
write_u4(size); |
|
338 |
write_u2(entry_count); |
|
12231
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changeset
|
339 |
for (; !iter.done(); iter.next()) { |
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diff
changeset
|
340 |
write_u2(iter.inner_class_info_index()); |
6a9cfc59a18a
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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changeset
|
341 |
write_u2(iter.outer_class_info_index()); |
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changeset
|
342 |
write_u2(iter.inner_name_index()); |
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changeset
|
343 |
write_u2(iter.inner_access_flags()); |
1 | 344 |
} |
345 |
} |
|
346 |
||
347 |
// Write Synthetic attribute |
|
348 |
// JVMSpec| Synthetic_attribute { |
|
349 |
// JVMSpec| u2 attribute_name_index; |
|
350 |
// JVMSpec| u4 attribute_length; |
|
351 |
// JVMSpec| } |
|
352 |
void JvmtiClassFileReconstituter::write_synthetic_attribute() { |
|
353 |
write_attribute_name_index("Synthetic"); |
|
354 |
write_u4(0); //length always zero |
|
355 |
} |
|
356 |
||
357 |
// Compute size of LineNumberTable |
|
358 |
u2 JvmtiClassFileReconstituter::line_number_table_entries(methodHandle method) { |
|
359 |
// The line number table is compressed so we don't know how big it is until decompressed. |
|
360 |
// Decompression is really fast so we just do it twice. |
|
361 |
u2 num_entries = 0; |
|
362 |
CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
|
363 |
while (stream.read_pair()) { |
|
364 |
num_entries++; |
|
365 |
} |
|
366 |
return num_entries; |
|
367 |
} |
|
368 |
||
369 |
// Write LineNumberTable attribute |
|
370 |
// JVMSpec| LineNumberTable_attribute { |
|
371 |
// JVMSpec| u2 attribute_name_index; |
|
372 |
// JVMSpec| u4 attribute_length; |
|
373 |
// JVMSpec| u2 line_number_table_length; |
|
374 |
// JVMSpec| { u2 start_pc; |
|
375 |
// JVMSpec| u2 line_number; |
|
376 |
// JVMSpec| } line_number_table[line_number_table_length]; |
|
377 |
// JVMSpec| } |
|
378 |
void JvmtiClassFileReconstituter::write_line_number_table_attribute(methodHandle method, |
|
379 |
u2 num_entries) { |
|
380 |
||
381 |
write_attribute_name_index("LineNumberTable"); |
|
382 |
write_u4(2 + num_entries * (2 + 2)); |
|
383 |
write_u2(num_entries); |
|
384 |
||
385 |
CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
|
386 |
while (stream.read_pair()) { |
|
387 |
write_u2(stream.bci()); |
|
388 |
write_u2(stream.line()); |
|
389 |
} |
|
390 |
} |
|
391 |
||
11257
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changeset
|
392 |
// Write LineNumberTable attribute |
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diff
changeset
|
393 |
// JVMSpec| LocalVariableTable_attribute { |
b98dfa12a8f7
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diff
changeset
|
394 |
// JVMSpec| u2 attribute_name_index; |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
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diff
changeset
|
395 |
// JVMSpec| u4 attribute_length; |
b98dfa12a8f7
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diff
changeset
|
396 |
// JVMSpec| u2 local_variable_table_length; |
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coleenp
parents:
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diff
changeset
|
397 |
// JVMSpec| { u2 start_pc; |
b98dfa12a8f7
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diff
changeset
|
398 |
// JVMSpec| u2 length; |
b98dfa12a8f7
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diff
changeset
|
399 |
// JVMSpec| u2 name_index; |
b98dfa12a8f7
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diff
changeset
|
400 |
// JVMSpec| u2 descriptor_index; |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
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diff
changeset
|
401 |
// JVMSpec| u2 index; |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
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10552
diff
changeset
|
402 |
// JVMSpec| } local_variable_table[local_variable_table_length]; |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
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10552
diff
changeset
|
403 |
// JVMSpec| } |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
404 |
void JvmtiClassFileReconstituter::write_local_variable_table_attribute(methodHandle method, u2 num_entries) { |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
405 |
write_attribute_name_index("LocalVariableTable"); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
406 |
write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2)); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
407 |
write_u2(num_entries); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
408 |
|
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
409 |
assert(method->localvariable_table_length() == num_entries, "just checking"); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
410 |
|
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
411 |
LocalVariableTableElement *elem = method->localvariable_table_start(); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
412 |
for (int j=0; j<method->localvariable_table_length(); j++) { |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
413 |
write_u2(elem->start_bci); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
414 |
write_u2(elem->length); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
415 |
write_u2(elem->name_cp_index); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
416 |
write_u2(elem->descriptor_cp_index); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
417 |
write_u2(elem->slot); |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
418 |
elem++; |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
419 |
} |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
parents:
10552
diff
changeset
|
420 |
} |
b98dfa12a8f7
7064927: retransformClasses() does not pass in LocalVariableTable of a method
coleenp
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10552
diff
changeset
|
421 |
|
1 | 422 |
// Write stack map table attribute |
423 |
// JSR-202| StackMapTable_attribute { |
|
424 |
// JSR-202| u2 attribute_name_index; |
|
425 |
// JSR-202| u4 attribute_length; |
|
426 |
// JSR-202| u2 number_of_entries; |
|
427 |
// JSR-202| stack_map_frame_entries[number_of_entries]; |
|
428 |
// JSR-202| } |
|
429 |
void JvmtiClassFileReconstituter::write_stackmap_table_attribute(methodHandle method, |
|
430 |
int stackmap_len) { |
|
431 |
||
432 |
write_attribute_name_index("StackMapTable"); |
|
433 |
write_u4(stackmap_len); |
|
434 |
memcpy( |
|
435 |
writeable_address(stackmap_len), |
|
436 |
(void*)(method->stackmap_data()->byte_at_addr(0)), |
|
437 |
stackmap_len); |
|
438 |
} |
|
439 |
||
440 |
// Write one method_info structure |
|
441 |
// JVMSpec| method_info { |
|
442 |
// JVMSpec| u2 access_flags; |
|
443 |
// JVMSpec| u2 name_index; |
|
444 |
// JVMSpec| u2 descriptor_index; |
|
445 |
// JVMSpec| u2 attributes_count; |
|
446 |
// JVMSpec| attribute_info attributes[attributes_count]; |
|
447 |
// JVMSpec| } |
|
448 |
void JvmtiClassFileReconstituter::write_method_info(methodHandle method) { |
|
449 |
AccessFlags access_flags = method->access_flags(); |
|
450 |
constMethodHandle const_method(thread(), method->constMethod()); |
|
451 |
u2 generic_signature_index = const_method->generic_signature_index(); |
|
452 |
typeArrayHandle anno(thread(), method->annotations()); |
|
453 |
typeArrayHandle param_anno(thread(), method->parameter_annotations()); |
|
454 |
typeArrayHandle default_anno(thread(), method->annotation_default()); |
|
455 |
||
456 |
write_u2(access_flags.get_flags() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
|
457 |
write_u2(const_method->name_index()); |
|
458 |
write_u2(const_method->signature_index()); |
|
459 |
||
460 |
// write attributes in the same order javac does, so we can test with byte for |
|
461 |
// byte comparison |
|
462 |
int attr_count = 0; |
|
463 |
if (const_method->code_size() != 0) { |
|
464 |
++attr_count; // has Code attribute |
|
465 |
} |
|
466 |
if (const_method->has_checked_exceptions()) { |
|
467 |
++attr_count; // has Exceptions attribute |
|
468 |
} |
|
469 |
if (default_anno.not_null()) { |
|
470 |
++attr_count; // has AnnotationDefault attribute |
|
471 |
} |
|
472 |
// Deprecated attribute would go here |
|
473 |
if (access_flags.is_synthetic()) { // FIXME |
|
474 |
// ++attr_count; |
|
475 |
} |
|
476 |
if (generic_signature_index != 0) { |
|
477 |
++attr_count; |
|
478 |
} |
|
479 |
if (anno.not_null()) { |
|
480 |
++attr_count; // has RuntimeVisibleAnnotations attribute |
|
481 |
} |
|
482 |
if (param_anno.not_null()) { |
|
483 |
++attr_count; // has RuntimeVisibleParameterAnnotations attribute |
|
484 |
} |
|
485 |
||
486 |
write_u2(attr_count); |
|
487 |
if (const_method->code_size() > 0) { |
|
488 |
write_code_attribute(method); |
|
489 |
} |
|
490 |
if (const_method->has_checked_exceptions()) { |
|
491 |
write_exceptions_attribute(const_method); |
|
492 |
} |
|
493 |
if (default_anno.not_null()) { |
|
494 |
write_annotations_attribute("AnnotationDefault", default_anno); |
|
495 |
} |
|
496 |
// Deprecated attribute would go here |
|
497 |
if (access_flags.is_synthetic()) { |
|
498 |
// write_synthetic_attribute(); |
|
499 |
} |
|
500 |
if (generic_signature_index != 0) { |
|
501 |
write_signature_attribute(generic_signature_index); |
|
502 |
} |
|
503 |
if (anno.not_null()) { |
|
504 |
write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
|
505 |
} |
|
506 |
if (param_anno.not_null()) { |
|
507 |
write_annotations_attribute("RuntimeVisibleParameterAnnotations", param_anno); |
|
508 |
} |
|
509 |
} |
|
510 |
||
511 |
// Write the class attributes portion of ClassFile structure |
|
512 |
// JVMSpec| u2 attributes_count; |
|
513 |
// JVMSpec| attribute_info attributes[attributes_count]; |
|
514 |
void JvmtiClassFileReconstituter::write_class_attributes() { |
|
515 |
u2 inner_classes_length = inner_classes_attribute_length(); |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
516 |
Symbol* generic_signature = ikh()->generic_signature(); |
1 | 517 |
typeArrayHandle anno(thread(), ikh()->class_annotations()); |
518 |
||
519 |
int attr_count = 0; |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
520 |
if (generic_signature != NULL) { |
1 | 521 |
++attr_count; |
522 |
} |
|
523 |
if (ikh()->source_file_name() != NULL) { |
|
524 |
++attr_count; |
|
525 |
} |
|
526 |
if (ikh()->source_debug_extension() != NULL) { |
|
527 |
++attr_count; |
|
528 |
} |
|
529 |
if (inner_classes_length > 0) { |
|
530 |
++attr_count; |
|
531 |
} |
|
532 |
if (anno.not_null()) { |
|
533 |
++attr_count; // has RuntimeVisibleAnnotations attribute |
|
534 |
} |
|
535 |
||
536 |
write_u2(attr_count); |
|
537 |
||
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
538 |
if (generic_signature != NULL) { |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
539 |
write_signature_attribute(symbol_to_cpool_index(generic_signature)); |
1 | 540 |
} |
541 |
if (ikh()->source_file_name() != NULL) { |
|
542 |
write_source_file_attribute(); |
|
543 |
} |
|
544 |
if (ikh()->source_debug_extension() != NULL) { |
|
545 |
write_source_debug_extension_attribute(); |
|
546 |
} |
|
547 |
if (inner_classes_length > 0) { |
|
548 |
write_inner_classes_attribute(inner_classes_length); |
|
549 |
} |
|
550 |
if (anno.not_null()) { |
|
551 |
write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
|
552 |
} |
|
553 |
} |
|
554 |
||
555 |
// Write the method information portion of ClassFile structure |
|
556 |
// JVMSpec| u2 methods_count; |
|
557 |
// JVMSpec| method_info methods[methods_count]; |
|
558 |
void JvmtiClassFileReconstituter::write_method_infos() { |
|
559 |
HandleMark hm(thread()); |
|
560 |
objArrayHandle methods(thread(), ikh()->methods()); |
|
561 |
int num_methods = methods->length(); |
|
562 |
||
563 |
write_u2(num_methods); |
|
564 |
if (JvmtiExport::can_maintain_original_method_order()) { |
|
565 |
int index; |
|
566 |
int original_index; |
|
567 |
int* method_order = NEW_RESOURCE_ARRAY(int, num_methods); |
|
568 |
||
569 |
// invert the method order mapping |
|
570 |
for (index = 0; index < num_methods; index++) { |
|
571 |
original_index = ikh()->method_ordering()->int_at(index); |
|
572 |
assert(original_index >= 0 && original_index < num_methods, |
|
573 |
"invalid original method index"); |
|
574 |
method_order[original_index] = index; |
|
575 |
} |
|
576 |
||
577 |
// write in original order |
|
578 |
for (original_index = 0; original_index < num_methods; original_index++) { |
|
579 |
index = method_order[original_index]; |
|
580 |
methodHandle method(thread(), (methodOop)(ikh()->methods()->obj_at(index))); |
|
581 |
write_method_info(method); |
|
582 |
} |
|
583 |
} else { |
|
584 |
// method order not preserved just dump the method infos |
|
585 |
for (int index = 0; index < num_methods; index++) { |
|
586 |
methodHandle method(thread(), (methodOop)(ikh()->methods()->obj_at(index))); |
|
587 |
write_method_info(method); |
|
588 |
} |
|
589 |
} |
|
590 |
} |
|
591 |
||
592 |
void JvmtiClassFileReconstituter::write_class_file_format() { |
|
593 |
ReallocMark(); |
|
594 |
||
595 |
// JVMSpec| ClassFile { |
|
596 |
// JVMSpec| u4 magic; |
|
597 |
write_u4(0xCAFEBABE); |
|
598 |
||
599 |
// JVMSpec| u2 minor_version; |
|
600 |
// JVMSpec| u2 major_version; |
|
601 |
write_u2(ikh()->minor_version()); |
|
602 |
u2 major = ikh()->major_version(); |
|
603 |
write_u2(major); |
|
604 |
||
605 |
// JVMSpec| u2 constant_pool_count; |
|
606 |
// JVMSpec| cp_info constant_pool[constant_pool_count-1]; |
|
607 |
write_u2(cpool()->length()); |
|
608 |
copy_cpool_bytes(writeable_address(cpool_size())); |
|
609 |
||
610 |
// JVMSpec| u2 access_flags; |
|
611 |
write_u2(ikh()->access_flags().get_flags() & JVM_RECOGNIZED_CLASS_MODIFIERS); |
|
612 |
||
613 |
// JVMSpec| u2 this_class; |
|
614 |
// JVMSpec| u2 super_class; |
|
615 |
write_u2(class_symbol_to_cpool_index(ikh()->name())); |
|
616 |
klassOop super_class = ikh()->super(); |
|
617 |
write_u2(super_class == NULL? 0 : // zero for java.lang.Object |
|
618 |
class_symbol_to_cpool_index(super_class->klass_part()->name())); |
|
619 |
||
620 |
// JVMSpec| u2 interfaces_count; |
|
621 |
// JVMSpec| u2 interfaces[interfaces_count]; |
|
622 |
objArrayHandle interfaces(thread(), ikh()->local_interfaces()); |
|
623 |
int num_interfaces = interfaces->length(); |
|
624 |
write_u2(num_interfaces); |
|
625 |
for (int index = 0; index < num_interfaces; index++) { |
|
626 |
HandleMark hm(thread()); |
|
627 |
instanceKlassHandle iikh(thread(), klassOop(interfaces->obj_at(index))); |
|
628 |
write_u2(class_symbol_to_cpool_index(iikh->name())); |
|
629 |
} |
|
630 |
||
631 |
// JVMSpec| u2 fields_count; |
|
632 |
// JVMSpec| field_info fields[fields_count]; |
|
633 |
write_field_infos(); |
|
634 |
||
635 |
// JVMSpec| u2 methods_count; |
|
636 |
// JVMSpec| method_info methods[methods_count]; |
|
637 |
write_method_infos(); |
|
638 |
||
639 |
// JVMSpec| u2 attributes_count; |
|
640 |
// JVMSpec| attribute_info attributes[attributes_count]; |
|
641 |
// JVMSpec| } /* end ClassFile 8? |
|
642 |
write_class_attributes(); |
|
643 |
} |
|
644 |
||
645 |
address JvmtiClassFileReconstituter::writeable_address(size_t size) { |
|
646 |
size_t used_size = _buffer_ptr - _buffer; |
|
647 |
if (size + used_size >= _buffer_size) { |
|
648 |
// compute the new buffer size: must be at least twice as big as before |
|
649 |
// plus whatever new is being used; then convert to nice clean block boundary |
|
650 |
size_t new_buffer_size = (size + _buffer_size*2 + 1) / initial_buffer_size |
|
651 |
* initial_buffer_size; |
|
652 |
||
653 |
// VM goes belly-up if the memory isn't available, so cannot do OOM processing |
|
654 |
_buffer = REALLOC_RESOURCE_ARRAY(u1, _buffer, _buffer_size, new_buffer_size); |
|
655 |
_buffer_size = new_buffer_size; |
|
656 |
_buffer_ptr = _buffer + used_size; |
|
657 |
} |
|
658 |
u1* ret_ptr = _buffer_ptr; |
|
659 |
_buffer_ptr += size; |
|
660 |
return ret_ptr; |
|
661 |
} |
|
662 |
||
663 |
void JvmtiClassFileReconstituter::write_attribute_name_index(const char* name) { |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
664 |
TempNewSymbol sym = SymbolTable::probe(name, (int)strlen(name)); |
1 | 665 |
assert(sym != NULL, "attribute name symbol not found"); |
666 |
u2 attr_name_index = symbol_to_cpool_index(sym); |
|
667 |
assert(attr_name_index != 0, "attribute name symbol not in constant pool"); |
|
668 |
write_u2(attr_name_index); |
|
669 |
} |
|
670 |
||
671 |
void JvmtiClassFileReconstituter::write_u1(u1 x) { |
|
672 |
*writeable_address(1) = x; |
|
673 |
} |
|
674 |
||
675 |
void JvmtiClassFileReconstituter::write_u2(u2 x) { |
|
676 |
Bytes::put_Java_u2(writeable_address(2), x); |
|
677 |
} |
|
678 |
||
679 |
void JvmtiClassFileReconstituter::write_u4(u4 x) { |
|
680 |
Bytes::put_Java_u4(writeable_address(4), x); |
|
681 |
} |
|
682 |
||
683 |
void JvmtiClassFileReconstituter::write_u8(u8 x) { |
|
684 |
Bytes::put_Java_u8(writeable_address(8), x); |
|
685 |
} |
|
686 |
||
687 |
void JvmtiClassFileReconstituter::copy_bytecodes(methodHandle mh, |
|
688 |
unsigned char* bytecodes) { |
|
689 |
// use a BytecodeStream to iterate over the bytecodes. JVM/fast bytecodes |
|
690 |
// and the breakpoint bytecode are converted to their original bytecodes. |
|
691 |
||
692 |
BytecodeStream bs(mh); |
|
693 |
||
694 |
unsigned char* p = bytecodes; |
|
695 |
Bytecodes::Code code; |
|
696 |
bool is_rewritten = instanceKlass::cast(mh->method_holder())->is_rewritten(); |
|
697 |
||
698 |
while ((code = bs.next()) >= 0) { |
|
699 |
assert(Bytecodes::is_java_code(code), "sanity check"); |
|
700 |
assert(code != Bytecodes::_breakpoint, "sanity check"); |
|
701 |
||
702 |
// length of bytecode (mnemonic + operands) |
|
703 |
address bcp = bs.bcp(); |
|
5688 | 704 |
int len = bs.instruction_size(); |
1 | 705 |
assert(len > 0, "length must be > 0"); |
706 |
||
707 |
// copy the bytecodes |
|
708 |
*p = (unsigned char) (bs.is_wide()? Bytecodes::_wide : code); |
|
709 |
if (len > 1) { |
|
710 |
memcpy(p+1, bcp+1, len-1); |
|
711 |
} |
|
712 |
||
713 |
// During linking the get/put and invoke instructions are rewritten |
|
714 |
// with an index into the constant pool cache. The original constant |
|
715 |
// pool index must be returned to caller. Rewrite the index. |
|
716 |
if (is_rewritten && len >= 3) { |
|
717 |
switch (code) { |
|
718 |
case Bytecodes::_getstatic : // fall through |
|
719 |
case Bytecodes::_putstatic : // fall through |
|
720 |
case Bytecodes::_getfield : // fall through |
|
721 |
case Bytecodes::_putfield : // fall through |
|
722 |
case Bytecodes::_invokevirtual : // fall through |
|
723 |
case Bytecodes::_invokespecial : // fall through |
|
724 |
case Bytecodes::_invokestatic : // fall through |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
725 |
case Bytecodes::_invokedynamic : // fall through |
1 | 726 |
case Bytecodes::_invokeinterface : |
12102
7a1c6c80bc23
7118280: The gbyc00102 JCK7 test causes an assert in JVM 7.0 fastdebug mode
dsamersoff
parents:
11257
diff
changeset
|
727 |
assert(len == 3 || |
7a1c6c80bc23
7118280: The gbyc00102 JCK7 test causes an assert in JVM 7.0 fastdebug mode
dsamersoff
parents:
11257
diff
changeset
|
728 |
(code == Bytecodes::_invokeinterface && len == 5) || |
7a1c6c80bc23
7118280: The gbyc00102 JCK7 test causes an assert in JVM 7.0 fastdebug mode
dsamersoff
parents:
11257
diff
changeset
|
729 |
(code == Bytecodes::_invokedynamic && len == 5), |
1 | 730 |
"sanity check"); |
12102
7a1c6c80bc23
7118280: The gbyc00102 JCK7 test causes an assert in JVM 7.0 fastdebug mode
dsamersoff
parents:
11257
diff
changeset
|
731 |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
732 |
int cpci = Bytes::get_native_u2(bcp+1); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
733 |
bool is_invokedynamic = (EnableInvokeDynamic && code == Bytecodes::_invokedynamic); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
734 |
if (is_invokedynamic) |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
735 |
cpci = Bytes::get_native_u4(bcp+1); |
1 | 736 |
// cache cannot be pre-fetched since some classes won't have it yet |
737 |
ConstantPoolCacheEntry* entry = |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
738 |
mh->constants()->cache()->main_entry_at(cpci); |
1 | 739 |
int i = entry->constant_pool_index(); |
740 |
assert(i < mh->constants()->length(), "sanity check"); |
|
741 |
Bytes::put_Java_u2((address)(p+1), (u2)i); // java byte ordering |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
1
diff
changeset
|
742 |
if (is_invokedynamic) *(p+3) = *(p+4) = 0; |
1 | 743 |
break; |
744 |
} |
|
745 |
} |
|
746 |
||
747 |
p += len; |
|
748 |
} |
|
749 |
} |