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java-interp.h (insn_index): New declaration.

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* include/java-interp.h (insn_index): New declaration.
        (num_insn_slots): New private variable.
        (get_line_table): New declaration.
        * interpret.cc (insn_index): New function.
        (get_line_table): New function.

From-SVN: r110411
This commit is contained in:
Keith Seitz 2006-01-30 21:20:40 +00:00 • committed by Keith Seitz
parent f34312c23c
commit e939885ff5
3 changed files with 99 additions and 0 deletions
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75
libjava/interpret.cc
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@ -330,6 +330,7 @@ _Jv_InterpMethod::compile (const void * const *insn_targets)
if (! first_pass)
{
insns = (insn_slot *) _Jv_AllocBytes (sizeof (insn_slot) * next);
number_insn_slots = next;
next = 0;
}
@ -3672,6 +3673,80 @@ _Jv_InterpMethod::ncode ()
return self->ncode;
}
#ifdef DIRECT_THREADED
/* Find the index of the given insn in the array of insn slots
for this method. Returns -1 if not found. */
jlong
_Jv_InterpMethod::insn_index (pc_t pc)
{
jlong left = 0;
jlong right = number_insn_slots;
insn_slot* slots = reinterpret_cast<insn_slot*> (prepared);
while (right >= 0)
{
jlong mid = (left + right) / 2;
if (&slots[mid] == pc)
return mid;
if (pc < &slots[mid])
right = mid - 1;
else
left = mid + 1;
}
return -1;
}
#endif // DIRECT_THREADED
void
_Jv_InterpMethod::get_line_table (jlong& start, jlong& end,
jintArray& line_numbers,
jlongArray& code_indices)
{
#ifdef DIRECT_THREADED
/* For the DIRECT_THREADED case, if the method has not yet been
* compiled, the linetable will change to insn slots instead of
* bytecode PCs. It is probably easiest, in this case, to simply
* compile the method and guarantee that we are using insn
* slots.
*/
_Jv_CompileMethod (this);
if (line_table_len > 0)
{
start = 0;
end = number_insn_slots;
line_numbers = JvNewIntArray (line_table_len);
code_indices = JvNewLongArray (line_table_len);
jint* lines = elements (line_numbers);
jlong* indices = elements (code_indices);
for (int i = 0; i < line_table_len; ++i)
{
lines[i] = line_table[i].line;
indices[i] = insn_index (line_table[i].pc);
}
}
#else // !DIRECT_THREADED
if (line_table_len > 0)
{
start = 0;
end = code_length;
line_numbers = JvNewIntArray (line_table_len);
code_indices = JvNewLongArray (line_table_len);
jint* lines = elements (line_numbers);
jlong* indices = elements (code_indices);
for (int i = 0; i < line_table_len; ++i)
{
lines[i] = line_table[i].line;
indices[i] = (jlong) line_table[i].bytecode_pc;
}
}
#endif // !DIRECT_THREADED
}
void *
_Jv_JNIMethod::ncode ()
{