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This commit is contained in:
Igor Veresov 2013-10-28 17:32:02 -07:00
commit 1c02aa59c9
23 changed files with 230 additions and 149 deletions
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4
hotspot/src/share/vm/interpreter/abstractInterpreter.hpp
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@ -158,8 +158,8 @@ class AbstractInterpreter: AllStatic {
// Runtime support
// length = invoke bytecode length (to advance to next bytecode)
static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
static address rethrow_exception_entry() { return _rethrow_exception_entry; }

2
hotspot/src/share/vm/interpreter/cppInterpreter.hpp
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@ -78,7 +78,7 @@ class CppInterpreter: public AbstractInterpreter {
static address stack_result_to_stack(int index) { return _stack_to_stack[index]; }
static address stack_result_to_native(int index) { return _stack_to_native_abi[index]; }
static address return_entry (TosState state, int length);
static address return_entry (TosState state, int length, Bytecodes::Code code);
static address deopt_entry (TosState state, int length);
#ifdef TARGET_ARCH_x86

18
hotspot/src/share/vm/interpreter/interpreter.cpp
View file

@ -329,15 +329,21 @@ void AbstractInterpreter::print_method_kind(MethodKind kind) {
//------------------------------------------------------------------------------------------------------------------------
// Deoptimization support
// If deoptimization happens, this function returns the point of next bytecode to continue execution
/**
* If a deoptimization happens, this function returns the point of next bytecode to continue execution.
*/
address AbstractInterpreter::deopt_continue_after_entry(Method* method, address bcp, int callee_parameters, bool is_top_frame) {
assert(method->contains(bcp), "just checkin'");
Bytecodes::Code code = Bytecodes::java_code_at(method, bcp);
// Get the original and rewritten bytecode.
Bytecodes::Code code = Bytecodes::java_code_at(method, bcp);
assert(!Interpreter::bytecode_should_reexecute(code), "should not reexecute");
int bci = method->bci_from(bcp);
int length = -1; // initial value for debugging
const int bci = method->bci_from(bcp);
// compute continuation length
length = Bytecodes::length_at(method, bcp);
const int length = Bytecodes::length_at(method, bcp);
// compute result type
BasicType type = T_ILLEGAL;
@ -393,7 +399,7 @@ address AbstractInterpreter::deopt_continue_after_entry(Method* method, address
return
is_top_frame
? Interpreter::deopt_entry (as_TosState(type), length)
: Interpreter::return_entry(as_TosState(type), length);
: Interpreter::return_entry(as_TosState(type), length, code);
}
// If deoptimization happens, this function returns the point where the interpreter reexecutes

86
hotspot/src/share/vm/interpreter/templateInterpreter.cpp
View file

@ -184,8 +184,9 @@ EntryPoint TemplateInterpreter::_deopt_entry [TemplateInterpreter::number_of_deo
EntryPoint TemplateInterpreter::_continuation_entry;
EntryPoint TemplateInterpreter::_safept_entry;
address TemplateInterpreter::_return_3_addrs_by_index[TemplateInterpreter::number_of_return_addrs];
address TemplateInterpreter::_return_5_addrs_by_index[TemplateInterpreter::number_of_return_addrs];
address TemplateInterpreter::_invoke_return_entry[TemplateInterpreter::number_of_return_addrs];
address TemplateInterpreter::_invokeinterface_return_entry[TemplateInterpreter::number_of_return_addrs];
address TemplateInterpreter::_invokedynamic_return_entry[TemplateInterpreter::number_of_return_addrs];
DispatchTable TemplateInterpreter::_active_table;
DispatchTable TemplateInterpreter::_normal_table;
@ -237,22 +238,37 @@ void TemplateInterpreterGenerator::generate_all() {
#endif // !PRODUCT
{ CodeletMark cm(_masm, "return entry points");
const int index_size = sizeof(u2);
for (int i = 0; i < Interpreter::number_of_return_entries; i++) {
Interpreter::_return_entry[i] =
EntryPoint(
generate_return_entry_for(itos, i),
generate_return_entry_for(itos, i),
generate_return_entry_for(itos, i),
generate_return_entry_for(atos, i),
generate_return_entry_for(itos, i),
generate_return_entry_for(ltos, i),
generate_return_entry_for(ftos, i),
generate_return_entry_for(dtos, i),
generate_return_entry_for(vtos, i)
generate_return_entry_for(itos, i, index_size),
generate_return_entry_for(itos, i, index_size),
generate_return_entry_for(itos, i, index_size),
generate_return_entry_for(atos, i, index_size),
generate_return_entry_for(itos, i, index_size),
generate_return_entry_for(ltos, i, index_size),
generate_return_entry_for(ftos, i, index_size),
generate_return_entry_for(dtos, i, index_size),
generate_return_entry_for(vtos, i, index_size)
);
}
}
{ CodeletMark cm(_masm, "invoke return entry points");
const TosState states[] = {itos, itos, itos, itos, ltos, ftos, dtos, atos, vtos};
const int invoke_length = Bytecodes::length_for(Bytecodes::_invokestatic);
const int invokeinterface_length = Bytecodes::length_for(Bytecodes::_invokeinterface);
const int invokedynamic_length = Bytecodes::length_for(Bytecodes::_invokedynamic);
for (int i = 0; i < Interpreter::number_of_return_addrs; i++) {
TosState state = states[i];
Interpreter::_invoke_return_entry[i] = generate_return_entry_for(state, invoke_length, sizeof(u2));
Interpreter::_invokeinterface_return_entry[i] = generate_return_entry_for(state, invokeinterface_length, sizeof(u2));
Interpreter::_invokedynamic_return_entry[i] = generate_return_entry_for(state, invokedynamic_length, sizeof(u4));
}
}
{ CodeletMark cm(_masm, "earlyret entry points");
Interpreter::_earlyret_entry =
EntryPoint(
@ -298,13 +314,6 @@ void TemplateInterpreterGenerator::generate_all() {
}
}
for (int j = 0; j < number_of_states; j++) {
const TosState states[] = {btos, ctos, stos, itos, ltos, ftos, dtos, atos, vtos};
int index = Interpreter::TosState_as_index(states[j]);
Interpreter::_return_3_addrs_by_index[index] = Interpreter::return_entry(states[j], 3);
Interpreter::_return_5_addrs_by_index[index] = Interpreter::return_entry(states[j], 5);
}
{ CodeletMark cm(_masm, "continuation entry points");
Interpreter::_continuation_entry =
EntryPoint(
@ -534,9 +543,46 @@ void TemplateInterpreterGenerator::generate_and_dispatch(Template* t, TosState t
//------------------------------------------------------------------------------------------------------------------------
// Entry points
address TemplateInterpreter::return_entry(TosState state, int length) {
/**
* Returns the return entry table for the given invoke bytecode.
*/
address* TemplateInterpreter::invoke_return_entry_table_for(Bytecodes::Code code) {
switch (code) {
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
case Bytecodes::_invokehandle:
return Interpreter::invoke_return_entry_table();
case Bytecodes::_invokeinterface:
return Interpreter::invokeinterface_return_entry_table();
case Bytecodes::_invokedynamic:
return Interpreter::invokedynamic_return_entry_table();
default:
fatal(err_msg("invalid bytecode: %s", Bytecodes::name(code)));
return NULL;
}
}
/**
* Returns the return entry address for the given top-of-stack state and bytecode.
*/
address TemplateInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) {
guarantee(0 <= length && length < Interpreter::number_of_return_entries, "illegal length");
return _return_entry[length].entry(state);
const int index = TosState_as_index(state);
switch (code) {
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
case Bytecodes::_invokehandle:
return _invoke_return_entry[index];
case Bytecodes::_invokeinterface:
return _invokeinterface_return_entry[index];
case Bytecodes::_invokedynamic:
return _invokedynamic_return_entry[index];
default:
assert(!Bytecodes::is_invoke(code), err_msg("invoke instructions should be handled separately: %s", Bytecodes::name(code)));
return _return_entry[length].entry(state);
}
}

18
hotspot/src/share/vm/interpreter/templateInterpreter.hpp
View file

@ -120,8 +120,9 @@ class TemplateInterpreter: public AbstractInterpreter {
static EntryPoint _continuation_entry;
static EntryPoint _safept_entry;
static address _return_3_addrs_by_index[number_of_return_addrs]; // for invokevirtual return entries
static address _return_5_addrs_by_index[number_of_return_addrs]; // for invokeinterface return entries
static address _invoke_return_entry[number_of_return_addrs]; // for invokestatic, invokespecial, invokevirtual return entries
static address _invokeinterface_return_entry[number_of_return_addrs]; // for invokeinterface return entries
static address _invokedynamic_return_entry[number_of_return_addrs]; // for invokedynamic return entries
static DispatchTable _active_table; // the active dispatch table (used by the interpreter for dispatch)
static DispatchTable _normal_table; // the normal dispatch table (used to set the active table in normal mode)
@ -161,12 +162,15 @@ class TemplateInterpreter: public AbstractInterpreter {
static address* normal_table() { return _normal_table.table_for(); }
// Support for invokes
static address* return_3_addrs_by_index_table() { return _return_3_addrs_by_index; }
static address* return_5_addrs_by_index_table() { return _return_5_addrs_by_index; }
static int TosState_as_index(TosState state); // computes index into return_3_entry_by_index table
static address* invoke_return_entry_table() { return _invoke_return_entry; }
static address* invokeinterface_return_entry_table() { return _invokeinterface_return_entry; }
static address* invokedynamic_return_entry_table() { return _invokedynamic_return_entry; }
static int TosState_as_index(TosState state);
static address return_entry (TosState state, int length);
static address deopt_entry (TosState state, int length);
static address* invoke_return_entry_table_for(Bytecodes::Code code);
static address deopt_entry(TosState state, int length);
static address return_entry(TosState state, int length, Bytecodes::Code code);
// Safepoint support
static void notice_safepoints(); // stops the thread when reaching a safepoint

2
hotspot/src/share/vm/interpreter/templateInterpreterGenerator.hpp
View file

@ -53,7 +53,7 @@ class TemplateInterpreterGenerator: public AbstractInterpreterGenerator {
address generate_ClassCastException_handler();
address generate_ArrayIndexOutOfBounds_handler(const char* name);
address generate_continuation_for(TosState state);
address generate_return_entry_for(TosState state, int step);
address generate_return_entry_for(TosState state, int step, size_t index_size);
address generate_earlyret_entry_for(TosState state);
address generate_deopt_entry_for(TosState state, int step);
address generate_safept_entry_for(TosState state, address runtime_entry);