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This commit is contained in:
Coleen Phillimore 2011-12-21 18:22:14 -08:00
commit 5232221c68
2 changed files with 56 additions and 4 deletions
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59
hotspot/src/share/vm/prims/jvmtiClassFileReconstituter.cpp
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@ -43,7 +43,7 @@
#ifdef TARGET_ARCH_ppc
# include "bytes_ppc.hpp"
#endif
// FIXME: add Deprecated, LVT, LVTT attributes
// FIXME: add Deprecated, LVTT attributes
// FIXME: fix Synthetic attribute
// FIXME: per Serguei, add error return handling for constantPoolOopDesc::copy_cpool_bytes()
@ -136,8 +136,9 @@ void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) {
constMethodHandle const_method(thread(), method->constMethod());
u2 line_num_cnt = 0;
int stackmap_len = 0;
int local_variable_table_length = 0;
// compute number and length of attributes -- FIXME: for now no LVT
// compute number and length of attributes
int attr_count = 0;
int attr_size = 0;
if (const_method->has_linenumber_table()) {
@ -170,6 +171,25 @@ void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) {
attr_size += 2 + 4 + stackmap_len;
}
}
if (method->has_localvariable_table()) {
local_variable_table_length = method->localvariable_table_length();
++attr_count;
if (local_variable_table_length != 0) {
// Compute the size of the local variable table attribute (VM stores raw):
// LocalVariableTable_attribute {
// u2 attribute_name_index;
// u4 attribute_length;
// u2 local_variable_table_length;
// {
// u2 start_pc;
// u2 length;
// u2 name_index;
// u2 descriptor_index;
// u2 index;
// }
attr_size += 2 + 4 + 2 + local_variable_table_length * (2 + 2 + 2 + 2 + 2);
}
}
typeArrayHandle exception_table(thread(), const_method->exception_table());
int exception_table_length = exception_table->length();
@ -203,8 +223,9 @@ void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) {
if (stackmap_len != 0) {
write_stackmap_table_attribute(method, stackmap_len);
}
// FIXME: write LVT attribute
if (local_variable_table_length != 0) {
write_local_variable_table_attribute(method, local_variable_table_length);
}
}
// Write Exceptions attribute
@ -371,6 +392,36 @@ void JvmtiClassFileReconstituter::write_line_number_table_attribute(methodHandle
}
}
// Write LineNumberTable attribute
// JVMSpec| LocalVariableTable_attribute {
// JVMSpec| u2 attribute_name_index;
// JVMSpec| u4 attribute_length;
// JVMSpec| u2 local_variable_table_length;
// JVMSpec| { u2 start_pc;
// JVMSpec| u2 length;
// JVMSpec| u2 name_index;
// JVMSpec| u2 descriptor_index;
// JVMSpec| u2 index;
// JVMSpec| } local_variable_table[local_variable_table_length];
// JVMSpec| }
void JvmtiClassFileReconstituter::write_local_variable_table_attribute(methodHandle method, u2 num_entries) {
write_attribute_name_index("LocalVariableTable");
write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2));
write_u2(num_entries);
assert(method->localvariable_table_length() == num_entries, "just checking");
LocalVariableTableElement *elem = method->localvariable_table_start();
for (int j=0; j<method->localvariable_table_length(); j++) {
write_u2(elem->start_bci);
write_u2(elem->length);
write_u2(elem->name_cp_index);
write_u2(elem->descriptor_cp_index);
write_u2(elem->slot);
elem++;
}
}
// Write stack map table attribute
// JSR-202| StackMapTable_attribute {
// JSR-202| u2 attribute_name_index;

1
hotspot/src/share/vm/prims/jvmtiClassFileReconstituter.hpp
View File

@ -119,6 +119,7 @@ class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter {
void write_source_debug_extension_attribute();
u2 line_number_table_entries(methodHandle method);
void write_line_number_table_attribute(methodHandle method, u2 num_entries);
void write_local_variable_table_attribute(methodHandle method, u2 num_entries);
void write_stackmap_table_attribute(methodHandle method, int stackmap_table_len);
u2 inner_classes_attribute_length();
void write_inner_classes_attribute(int length);