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6655638: dynamic languages need method handles

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Initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)

Reviewed-by: kvn, twisti, never
This commit is contained in:
John R Rose 2009-04-08 10:56:49 -07:00
parent 318da3f68c
commit ce0c084720
63 changed files with 5815 additions and 70 deletions
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52
hotspot/src/cpu/sparc/vm/assembler_sparc.cpp
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@ -3029,6 +3029,58 @@ void MacroAssembler::check_klass_subtype_slow_path(Register sub_klass,
void MacroAssembler::check_method_handle_type(Register mtype_reg, Register mh_reg,
Register temp_reg,
Label& wrong_method_type) {
assert_different_registers(mtype_reg, mh_reg, temp_reg);
// compare method type against that of the receiver
RegisterOrConstant mhtype_offset = delayed_value(java_dyn_MethodHandle::type_offset_in_bytes, temp_reg);
ld_ptr(mh_reg, mhtype_offset, temp_reg);
cmp(temp_reg, mtype_reg);
br(Assembler::notEqual, false, Assembler::pn, wrong_method_type);
delayed()->nop();
}
void MacroAssembler::jump_to_method_handle_entry(Register mh_reg, Register temp_reg) {
assert(mh_reg == G3_method_handle, "caller must put MH object in G3");
assert_different_registers(mh_reg, temp_reg);
// pick out the interpreted side of the handler
ld_ptr(mh_reg, delayed_value(java_dyn_MethodHandle::vmentry_offset_in_bytes, temp_reg), temp_reg);
// off we go...
ld_ptr(temp_reg, MethodHandleEntry::from_interpreted_entry_offset_in_bytes(), temp_reg);
jmp(temp_reg, 0);
// for the various stubs which take control at this point,
// see MethodHandles::generate_method_handle_stub
// (Can any caller use this delay slot? If so, add an option for supression.)
delayed()->nop();
}
RegisterOrConstant MacroAssembler::argument_offset(RegisterOrConstant arg_slot,
int extra_slot_offset) {
// cf. TemplateTable::prepare_invoke(), if (load_receiver).
int stackElementSize = Interpreter::stackElementWords() * wordSize;
int offset = Interpreter::expr_offset_in_bytes(extra_slot_offset+0);
int offset1 = Interpreter::expr_offset_in_bytes(extra_slot_offset+1);
assert(offset1 - offset == stackElementSize, "correct arithmetic");
if (arg_slot.is_constant()) {
offset += arg_slot.as_constant() * stackElementSize;
return offset;
} else {
Register temp = arg_slot.as_register();
sll_ptr(temp, exact_log2(stackElementSize), temp);
if (offset != 0)
add(temp, offset, temp);
return temp;
}
}
void MacroAssembler::biased_locking_enter(Register obj_reg, Register mark_reg,
Register temp_reg,
Label& done, Label* slow_case,