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defineclass.cc (_Jv_ClassReader::read_one_code_attribute): Added LocalVariableTable attribute handling.

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2007-02-15  Kyle Galloway  <kgallowa@redhat.com>

	* defineclass.cc (_Jv_ClassReader::read_one_code_attribute):
    Added LocalVariableTable attribute handling.
    (_Jv_ClassReader::pool_Utf8_to_char_arr): New method.
    * jvmti.cc (_Jv_JVMTI_GetLocalVariableTable): New method.
    * include/java-interp.h: Added local_var_table and
    local_var_table_len fields to _Jv_InterpMethod.
    (_Jv_InterpMethod::get_local_var_table): New method.
    * testsuite/libjava.jvmti/interp/getlocalvartable.java: New
    test.
    * testsuite/libjava.jvmti/interp/getlocalvartable.jar: New test.
    * testsuite/libjava.jvmti/interp/getlocalvartable.out: Output
    for new test.
    * testsuite/libjava.jvmti/interp/getlocalvartable.h: New test.
    * testsuite/libjava.jvmti/interp/natgetlocalvartable.cc: New
    test.

From-SVN: r121999
This commit is contained in:
Kyle Galloway 2007-02-15 15:08:27 +00:00 • committed by Kyle Galloway
parent ed765125f2
commit fe60528edc
5 changed files with 202 additions and 3 deletions
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33
libjava/include/java-interp.h
View file

@ -137,6 +137,21 @@ struct _Jv_LineTableEntry
int line;
};
// This structure holds local variable information.
// The pc value is the first pc where the variable must have a value and it
// must continue to have a value until (start_pc + length).
// The name is the variable name, and the descriptor contains type information.
// The slot is the index in the local variable array of this method, long and
// double occupy slot and slot+1.
struct _Jv_LocalVarTableEntry
{
int bytecode_start_pc;
int length;
char *name;
char *descriptor;
int slot;
};
class _Jv_InterpMethod : public _Jv_MethodBase
{
// Breakpoint instruction
@ -157,6 +172,10 @@ class _Jv_InterpMethod : public _Jv_MethodBase
// Length of the line_table - when this is zero then line_table is NULL.
int line_table_len;
_Jv_LineTableEntry *line_table;
// The local variable table length and the table itself
int local_var_table_len;
_Jv_LocalVarTableEntry *local_var_table;
pc_t prepared;
int number_insn_slots;
@ -224,6 +243,20 @@ class _Jv_InterpMethod : public _Jv_MethodBase
{
return static_cast<int> (max_locals);
}
/* Get info for a local variable of this method.
* If there is no loca_var_table for this method it will return -1.
* table_slot indicates which slot in the local_var_table to get, if there is
* no variable at this location it will return 0.
* Otherwise, it will return the number of table slots after the selected
* slot, indexed from 0.
*
* Example: there are 5 slots in the table, you request slot 0 so it will
* return 4.
*/
int get_local_var_table (char **name, char **sig, char **generic_sig,
jlong *startloc, jint *length, jint *slot,
int table_slot);
/* Installs a break instruction at the given code index. Returns
the pc_t of the breakpoint or NULL if index is invalid. */