jrose@1145: /*
trims@1907:  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
jrose@1145:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jrose@1145:  *
jrose@1145:  * This code is free software; you can redistribute it and/or modify it
jrose@1145:  * under the terms of the GNU General Public License version 2 only, as
jrose@1145:  * published by the Free Software Foundation.
jrose@1145:  *
jrose@1145:  * This code is distributed in the hope that it will be useful, but WITHOUT
jrose@1145:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jrose@1145:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jrose@1145:  * version 2 for more details (a copy is included in the LICENSE file that
jrose@1145:  * accompanied this code).
jrose@1145:  *
jrose@1145:  * You should have received a copy of the GNU General Public License version
jrose@1145:  * 2 along with this work; if not, write to the Free Software Foundation,
jrose@1145:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jrose@1145:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
jrose@1145:  *
jrose@1145:  */
jrose@1145: 
jrose@1145: #include "incls/_precompiled.incl"
jrose@1145: #include "incls/_methodHandles_sparc.cpp.incl"
jrose@1145: 
jrose@1145: #define __ _masm->
jrose@1145: 
twisti@2204: #ifdef PRODUCT
twisti@2204: #define BLOCK_COMMENT(str) /* nothing */
twisti@2204: #else
twisti@2204: #define BLOCK_COMMENT(str) __ block_comment(str)
twisti@2204: #endif
twisti@2204: 
twisti@2204: #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
twisti@2204: 
jrose@1145: address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
jrose@1145:                                                 address interpreted_entry) {
twisti@1858:   // Just before the actual machine code entry point, allocate space
twisti@1858:   // for a MethodHandleEntry::Data record, so that we can manage everything
twisti@1858:   // from one base pointer.
jrose@1145:   __ align(wordSize);
jrose@1145:   address target = __ pc() + sizeof(Data);
jrose@1145:   while (__ pc() < target) {
jrose@1145:     __ nop();
jrose@1145:     __ align(wordSize);
jrose@1145:   }
jrose@1145: 
jrose@1145:   MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
jrose@1145:   me->set_end_address(__ pc());         // set a temporary end_address
jrose@1145:   me->set_from_interpreted_entry(interpreted_entry);
jrose@1145:   me->set_type_checking_entry(NULL);
jrose@1145: 
jrose@1145:   return (address) me;
jrose@1145: }
jrose@1145: 
jrose@1145: MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
jrose@1145:                                                 address start_addr) {
jrose@1145:   MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
jrose@1145:   assert(me->end_address() == start_addr, "valid ME");
jrose@1145: 
jrose@1145:   // Fill in the real end_address:
jrose@1145:   __ align(wordSize);
jrose@1145:   me->set_end_address(__ pc());
jrose@1145: 
jrose@1145:   return me;
jrose@1145: }
jrose@1145: 
jrose@1145: 
jrose@1145: // Code generation
jrose@1145: address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
twisti@1858:   // I5_savedSP: sender SP (must preserve)
twisti@1858:   // G4 (Gargs): incoming argument list (must preserve)
twisti@1858:   // G5_method:  invoke methodOop; becomes method type.
twisti@1858:   // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots])
twisti@1858:   // O0, O1: garbage temps, blown away
twisti@1858:   Register O0_argslot = O0;
twisti@1858:   Register O1_scratch = O1;
jrose@2266:   Register O2_scratch = O2;
jrose@2266:   Register O3_scratch = O3;
jrose@2266:   Register O4_argbase = O4;
jrose@2266:   Register O5_mtype   = O5;
twisti@1858: 
twisti@1858:   // emit WrongMethodType path first, to enable back-branch from main path
twisti@1858:   Label wrong_method_type;
twisti@1858:   __ bind(wrong_method_type);
jrose@2266:   Label invoke_generic_slow_path;
jrose@2266:   assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");;
jrose@2266:   __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch);
jrose@2266:   __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact);
jrose@2266:   __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path);
jrose@2266:   __ delayed()->nop();
jrose@2266:   __ mov(O5_mtype, G5_method_type);  // required by throw_WrongMethodType
jrose@2266:   // mov(G3_method_handle, G3_method_handle);  // already in this register
twisti@1858:   __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
twisti@1858:   __ delayed()->nop();
twisti@1858: 
twisti@1858:   // here's where control starts out:
twisti@1858:   __ align(CodeEntryAlignment);
twisti@1858:   address entry_point = __ pc();
twisti@1858: 
jrose@2266:   // fetch the MethodType from the method handle
twisti@1858:   {
twisti@1858:     Register tem = G5_method;
twisti@1858:     for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
jrose@2266:       __ ld_ptr(Address(tem, *pchase), O5_mtype);
jrose@2266:       tem = O5_mtype;          // in case there is another indirection
twisti@1858:     }
twisti@1858:   }
twisti@1858: 
twisti@1858:   // given the MethodType, find out where the MH argument is buried
jrose@2266:   __ load_heap_oop(Address(O5_mtype,   __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)),        O0_argslot);
jrose@2266:   __ ldsw(  Address(O0_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O0_argslot);
jrose@2266:   __ add(Gargs, __ argument_offset(O0_argslot, 1), O4_argbase);
jrose@2266:   // Note: argument_address uses its input as a scratch register!
jrose@2266:   __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle);
twisti@1858: 
jrose@2266:   trace_method_handle(_masm, "invokeExact");
jrose@2266: 
jrose@2266:   __ check_method_handle_type(O5_mtype, G3_method_handle, O1_scratch, wrong_method_type);
twisti@1858:   __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858: 
jrose@2266:   // for invokeGeneric (only), apply argument and result conversions on the fly
jrose@2266:   __ bind(invoke_generic_slow_path);
jrose@2266: #ifdef ASSERT
jrose@2266:   { Label L;
jrose@2266:     __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch);
jrose@2266:     __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric);
jrose@2266:     __ brx(Assembler::equal, false, Assembler::pt, L);
jrose@2266:     __ delayed()->nop();
jrose@2266:     __ stop("bad methodOop::intrinsic_id");
jrose@2266:     __ bind(L);
jrose@2266:   }
jrose@2266: #endif //ASSERT
jrose@2266: 
jrose@2266:   // make room on the stack for another pointer:
jrose@2266:   insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK,
jrose@2266:                    O4_argbase, O1_scratch, O2_scratch, O3_scratch);
jrose@2266:   // load up an adapter from the calling type (Java weaves this)
jrose@2266:   Register O2_form    = O2_scratch;
jrose@2266:   Register O3_adapter = O3_scratch;
jrose@2266:   __ load_heap_oop(Address(O5_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O2_form);
jrose@2266:   // load_heap_oop(Address(O2_form,  __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter);
jrose@2266:   // deal with old JDK versions:
jrose@2266:   __ add(   Address(O2_form,  __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter);
jrose@2266:   __ cmp(O3_adapter, O2_form);
jrose@2266:   Label sorry_no_invoke_generic;
jrose@2266:   __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic);
jrose@2266:   __ delayed()->nop();
jrose@2266: 
jrose@2266:   __ load_heap_oop(Address(O3_adapter, 0), O3_adapter);
jrose@2266:   __ tst(O3_adapter);
jrose@2266:   __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic);
jrose@2266:   __ delayed()->nop();
jrose@2266:   __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize));
jrose@2266:   // As a trusted first argument, pass the type being called, so the adapter knows
jrose@2266:   // the actual types of the arguments and return values.
jrose@2266:   // (Generic invokers are shared among form-families of method-type.)
jrose@2266:   __ st_ptr(O5_mtype,   Address(O4_argbase, 0 * Interpreter::stackElementSize));
jrose@2266:   // FIXME: assert that O3_adapter is of the right method-type.
jrose@2266:   __ mov(O3_adapter, G3_method_handle);
jrose@2266:   trace_method_handle(_masm, "invokeGeneric");
jrose@2266:   __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
jrose@2266: 
jrose@2266:   __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available!
jrose@2266:   __ mov(O5_mtype, G5_method_type);  // required by throw_WrongMethodType
jrose@2266:   // mov(G3_method_handle, G3_method_handle);  // already in this register
jrose@2266:   __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
jrose@2266:   __ delayed()->nop();
jrose@2266: 
twisti@1858:   return entry_point;
jrose@1145: }
jrose@1145: 
twisti@1858: 
twisti@1858: #ifdef ASSERT
twisti@1858: static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
twisti@1858:   // Verify that argslot lies within (Gargs, FP].
twisti@1858:   Label L_ok, L_bad;
twisti@2204:   BLOCK_COMMENT("{ verify_argslot");
twisti@1858: #ifdef _LP64
twisti@1858:   __ add(FP, STACK_BIAS, temp_reg);
twisti@1858:   __ cmp(argslot_reg, temp_reg);
twisti@1858: #else
twisti@1858:   __ cmp(argslot_reg, FP);
twisti@1858: #endif
twisti@1858:   __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad);
twisti@1858:   __ delayed()->nop();
twisti@1858:   __ cmp(Gargs, argslot_reg);
twisti@1858:   __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
twisti@1858:   __ delayed()->nop();
twisti@1858:   __ bind(L_bad);
twisti@1858:   __ stop(error_message);
twisti@1858:   __ bind(L_ok);
twisti@2204:   BLOCK_COMMENT("} verify_argslot");
twisti@1858: }
twisti@1858: #endif
twisti@1858: 
twisti@1858: 
twisti@1858: // Helper to insert argument slots into the stack.
twisti@1858: // arg_slots must be a multiple of stack_move_unit() and <= 0
twisti@1858: void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
twisti@1858:                                      RegisterOrConstant arg_slots,
twisti@1858:                                      int arg_mask,
twisti@1858:                                      Register argslot_reg,
twisti@1858:                                      Register temp_reg, Register temp2_reg, Register temp3_reg) {
twisti@1858:   assert(temp3_reg != noreg, "temp3 required");
twisti@1858:   assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
twisti@1858:                              (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
twisti@1858: 
twisti@1858: #ifdef ASSERT
twisti@1858:   verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame");
twisti@1858:   if (arg_slots.is_register()) {
twisti@1858:     Label L_ok, L_bad;
twisti@1858:     __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
twisti@1858:     __ br(Assembler::greater, false, Assembler::pn, L_bad);
twisti@1858:     __ delayed()->nop();
twisti@1858:     __ btst(-stack_move_unit() - 1, arg_slots.as_register());
twisti@1858:     __ br(Assembler::zero, false, Assembler::pt, L_ok);
twisti@1858:     __ delayed()->nop();
twisti@1858:     __ bind(L_bad);
twisti@1858:     __ stop("assert arg_slots <= 0 and clear low bits");
twisti@1858:     __ bind(L_ok);
twisti@1858:   } else {
twisti@1858:     assert(arg_slots.as_constant() <= 0, "");
twisti@1858:     assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
twisti@1858:   }
twisti@1858: #endif // ASSERT
twisti@1858: 
twisti@1858: #ifdef _LP64
twisti@1858:   if (arg_slots.is_register()) {
twisti@1858:     // Was arg_slots register loaded as signed int?
twisti@1858:     Label L_ok;
twisti@1858:     __ sll(arg_slots.as_register(), BitsPerInt, temp_reg);
twisti@1858:     __ sra(temp_reg, BitsPerInt, temp_reg);
twisti@1858:     __ cmp(arg_slots.as_register(), temp_reg);
twisti@1858:     __ br(Assembler::equal, false, Assembler::pt, L_ok);
twisti@1858:     __ delayed()->nop();
twisti@1858:     __ stop("arg_slots register not loaded as signed int");
twisti@1858:     __ bind(L_ok);
twisti@1858:   }
twisti@1858: #endif
twisti@1858: 
twisti@1858:   // Make space on the stack for the inserted argument(s).
twisti@1858:   // Then pull down everything shallower than argslot_reg.
twisti@1858:   // The stacked return address gets pulled down with everything else.
twisti@1858:   // That is, copy [sp, argslot) downward by -size words.  In pseudo-code:
twisti@1858:   //   sp -= size;
twisti@1858:   //   for (temp = sp + size; temp < argslot; temp++)
twisti@1858:   //     temp[-size] = temp[0]
twisti@1858:   //   argslot -= size;
twisti@2204:   BLOCK_COMMENT("insert_arg_slots {");
twisti@1858:   RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
twisti@1858: 
twisti@1858:   // Keep the stack pointer 2*wordSize aligned.
twisti@1858:   const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
twisti@1858:   RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
twisti@1858:   __ add(SP, masked_offset, SP);
twisti@1858: 
twisti@1858:   __ mov(Gargs, temp_reg);  // source pointer for copy
twisti@1858:   __ add(Gargs, offset, Gargs);
twisti@1858: 
twisti@1858:   {
twisti@1858:     Label loop;
twisti@2204:     __ BIND(loop);
twisti@1858:     // pull one word down each time through the loop
twisti@1858:     __ ld_ptr(Address(temp_reg, 0), temp2_reg);
twisti@1858:     __ st_ptr(temp2_reg, Address(temp_reg, offset));
twisti@1858:     __ add(temp_reg, wordSize, temp_reg);
twisti@1858:     __ cmp(temp_reg, argslot_reg);
twisti@1858:     __ brx(Assembler::less, false, Assembler::pt, loop);
twisti@1858:     __ delayed()->nop();  // FILLME
twisti@1858:   }
twisti@1858: 
twisti@1858:   // Now move the argslot down, to point to the opened-up space.
twisti@1858:   __ add(argslot_reg, offset, argslot_reg);
twisti@2204:   BLOCK_COMMENT("} insert_arg_slots");
twisti@1858: }
twisti@1858: 
twisti@1858: 
twisti@1858: // Helper to remove argument slots from the stack.
twisti@1858: // arg_slots must be a multiple of stack_move_unit() and >= 0
twisti@1858: void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
twisti@1858:                                      RegisterOrConstant arg_slots,
twisti@1858:                                      Register argslot_reg,
twisti@1858:                                      Register temp_reg, Register temp2_reg, Register temp3_reg) {
twisti@1858:   assert(temp3_reg != noreg, "temp3 required");
twisti@1858:   assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
twisti@1858:                              (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
twisti@1858: 
twisti@1858:   RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
twisti@1858: 
twisti@1858: #ifdef ASSERT
twisti@1858:   // Verify that [argslot..argslot+size) lies within (Gargs, FP).
twisti@1858:   __ add(argslot_reg, offset, temp2_reg);
twisti@1858:   verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame");
twisti@1858:   if (arg_slots.is_register()) {
twisti@1858:     Label L_ok, L_bad;
twisti@1858:     __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
twisti@1858:     __ br(Assembler::less, false, Assembler::pn, L_bad);
twisti@1858:     __ delayed()->nop();
twisti@1858:     __ btst(-stack_move_unit() - 1, arg_slots.as_register());
twisti@1858:     __ br(Assembler::zero, false, Assembler::pt, L_ok);
twisti@1858:     __ delayed()->nop();
twisti@1858:     __ bind(L_bad);
twisti@1858:     __ stop("assert arg_slots >= 0 and clear low bits");
twisti@1858:     __ bind(L_ok);
twisti@1858:   } else {
twisti@1858:     assert(arg_slots.as_constant() >= 0, "");
twisti@1858:     assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
twisti@1858:   }
twisti@1858: #endif // ASSERT
twisti@1858: 
twisti@2204:   BLOCK_COMMENT("remove_arg_slots {");
twisti@1858:   // Pull up everything shallower than argslot.
twisti@1858:   // Then remove the excess space on the stack.
twisti@1858:   // The stacked return address gets pulled up with everything else.
twisti@1858:   // That is, copy [sp, argslot) upward by size words.  In pseudo-code:
twisti@1858:   //   for (temp = argslot-1; temp >= sp; --temp)
twisti@1858:   //     temp[size] = temp[0]
twisti@1858:   //   argslot += size;
twisti@1858:   //   sp += size;
twisti@1858:   __ sub(argslot_reg, wordSize, temp_reg);  // source pointer for copy
twisti@1858:   {
twisti@1858:     Label loop;
twisti@2204:     __ BIND(loop);
twisti@1858:     // pull one word up each time through the loop
twisti@1858:     __ ld_ptr(Address(temp_reg, 0), temp2_reg);
twisti@1858:     __ st_ptr(temp2_reg, Address(temp_reg, offset));
twisti@1858:     __ sub(temp_reg, wordSize, temp_reg);
twisti@1858:     __ cmp(temp_reg, Gargs);
twisti@1858:     __ brx(Assembler::greaterEqual, false, Assembler::pt, loop);
twisti@1858:     __ delayed()->nop();  // FILLME
twisti@1858:   }
twisti@1858: 
twisti@1858:   // Now move the argslot up, to point to the just-copied block.
twisti@1858:   __ add(Gargs, offset, Gargs);
twisti@1858:   // And adjust the argslot address to point at the deletion point.
twisti@1858:   __ add(argslot_reg, offset, argslot_reg);
twisti@1858: 
twisti@1858:   // Keep the stack pointer 2*wordSize aligned.
twisti@1858:   const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
twisti@1858:   RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
twisti@1858:   __ add(SP, masked_offset, SP);
twisti@2204:   BLOCK_COMMENT("} remove_arg_slots");
twisti@1858: }
twisti@1858: 
twisti@1858: 
twisti@1858: #ifndef PRODUCT
twisti@1858: extern "C" void print_method_handle(oop mh);
twisti@1858: void trace_method_handle_stub(const char* adaptername,
twisti@2204:                               oopDesc* mh) {
twisti@1858:   printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
twisti@1858:   print_method_handle(mh);
twisti@1858: }
twisti@2204: void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
twisti@2204:   if (!TraceMethodHandles)  return;
twisti@2204:   BLOCK_COMMENT("trace_method_handle {");
twisti@2204:   // save: Gargs, O5_savedSP
twisti@2204:   __ save_frame(16);
twisti@2204:   __ set((intptr_t) adaptername, O0);
twisti@2204:   __ mov(G3_method_handle, O1);
twisti@2204:   __ mov(G3_method_handle, L3);
twisti@2204:   __ mov(Gargs, L4);
twisti@2204:   __ mov(G5_method_type, L5);
twisti@2204:   __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
twisti@2204: 
twisti@2204:   __ mov(L3, G3_method_handle);
twisti@2204:   __ mov(L4, Gargs);
twisti@2204:   __ mov(L5, G5_method_type);
twisti@2204:   __ restore();
twisti@2204:   BLOCK_COMMENT("} trace_method_handle");
twisti@2204: }
twisti@1858: #endif // PRODUCT
twisti@1858: 
jrose@1862: // which conversion op types are implemented here?
jrose@1862: int MethodHandles::adapter_conversion_ops_supported_mask() {
jrose@1862:   return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS)
jrose@1862:          |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS)
jrose@1862:          //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
jrose@1862:          );
jrose@1862:   // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
jrose@1862: }
twisti@1858: 
twisti@1858: //------------------------------------------------------------------------------
twisti@1858: // MethodHandles::generate_method_handle_stub
twisti@1858: //
jrose@1145: // Generate an "entry" field for a method handle.
jrose@1145: // This determines how the method handle will respond to calls.
jrose@1145: void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
twisti@1858:   // Here is the register state during an interpreted call,
twisti@1858:   // as set up by generate_method_handle_interpreter_entry():
twisti@1858:   // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
twisti@1858:   // - G3: receiver method handle
twisti@1858:   // - O5_savedSP: sender SP (must preserve)
twisti@1858: 
twisti@1858:   Register O0_argslot = O0;
twisti@1858:   Register O1_scratch = O1;
twisti@1858:   Register O2_scratch = O2;
twisti@1858:   Register O3_scratch = O3;
twisti@1858:   Register G5_index   = G5;
twisti@1858: 
twisti@1858:   guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
twisti@1858: 
twisti@1858:   // Some handy addresses:
twisti@1858:   Address G5_method_fie(    G5_method,        in_bytes(methodOopDesc::from_interpreted_offset()));
twisti@1858: 
twisti@1858:   Address G3_mh_vmtarget(   G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
twisti@1858: 
twisti@1858:   Address G3_dmh_vmindex(   G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
twisti@1858: 
twisti@1858:   Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes());
twisti@1858:   Address G3_bmh_argument(  G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes());
twisti@1858: 
twisti@1858:   Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes());
twisti@1858:   Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes());
twisti@1858:   Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes());
twisti@1858: 
twisti@1858:   const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
twisti@1858: 
twisti@1858:   if (have_entry(ek)) {
twisti@1858:     __ nop();  // empty stubs make SG sick
twisti@1858:     return;
twisti@1858:   }
twisti@1858: 
twisti@1858:   address interp_entry = __ pc();
twisti@1858: 
twisti@2204:   trace_method_handle(_masm, entry_name(ek));
twisti@1858: 
twisti@1858:   switch ((int) ek) {
twisti@1858:   case _raise_exception:
twisti@1858:     {
twisti@1858:       // Not a real MH entry, but rather shared code for raising an
twisti@1858:       // exception.  Extra local arguments are passed in scratch
twisti@1858:       // registers, as required type in O3, failing object (or NULL)
twisti@1858:       // in O2, failing bytecode type in O1.
twisti@1858: 
twisti@1858:       __ mov(O5_savedSP, SP);  // Cut the stack back to where the caller started.
twisti@1858: 
twisti@1858:       // Push arguments as if coming from the interpreter.
twisti@1858:       Register O0_scratch = O0_argslot;
twisti@1861:       int stackElementSize = Interpreter::stackElementSize;
twisti@1858: 
twisti@1919:       // Make space on the stack for the arguments and set Gargs
twisti@1919:       // correctly.
twisti@1919:       __ sub(SP, 4*stackElementSize, SP);  // Keep stack aligned.
twisti@1919:       __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs);
twisti@1858: 
twisti@1858:       // void raiseException(int code, Object actual, Object required)
twisti@1858:       __ st(    O1_scratch, Address(Gargs, 2*stackElementSize));  // code
twisti@1858:       __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize));  // actual
twisti@1858:       __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize));  // required
twisti@1858: 
twisti@1858:       Label no_method;
twisti@1858:       // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
twisti@1858:       __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
twisti@1858:       __ ld_ptr(Address(G5_method, 0), G5_method);
twisti@1858:       __ tst(G5_method);
twisti@1858:       __ brx(Assembler::zero, false, Assembler::pn, no_method);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       int jobject_oop_offset = 0;
twisti@1858:       __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
twisti@1858:       __ tst(G5_method);
twisti@1858:       __ brx(Assembler::zero, false, Assembler::pn, no_method);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       __ verify_oop(G5_method);
twisti@1858:       __ jump_indirect_to(G5_method_fie, O1_scratch);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       // If we get here, the Java runtime did not do its job of creating the exception.
twisti@1858:       // Do something that is at least causes a valid throw from the interpreter.
twisti@1858:       __ bind(no_method);
twisti@1858:       __ unimplemented("_raise_exception no method");
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _invokestatic_mh:
twisti@1858:   case _invokespecial_mh:
twisti@1858:     {
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G5_method);  // target is a methodOop
twisti@1858:       __ verify_oop(G5_method);
twisti@1858:       // Same as TemplateTable::invokestatic or invokespecial,
twisti@1858:       // minus the CP setup and profiling:
twisti@1858:       if (ek == _invokespecial_mh) {
twisti@1858:         // Must load & check the first argument before entering the target method.
twisti@1858:         __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
twisti@1858:         __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
twisti@1858:         __ null_check(G3_method_handle);
twisti@1858:         __ verify_oop(G3_method_handle);
twisti@1858:       }
twisti@1858:       __ jump_indirect_to(G5_method_fie, O1_scratch);
twisti@1858:       __ delayed()->nop();
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _invokevirtual_mh:
twisti@1858:     {
twisti@1858:       // Same as TemplateTable::invokevirtual,
twisti@1858:       // minus the CP setup and profiling:
twisti@1858: 
twisti@1858:       // Pick out the vtable index and receiver offset from the MH,
twisti@1858:       // and then we can discard it:
twisti@1858:       __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
twisti@1858:       __ ldsw(G3_dmh_vmindex, G5_index);
twisti@1858:       // Note:  The verifier allows us to ignore G3_mh_vmtarget.
twisti@1858:       __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
twisti@1858:       __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
twisti@1858: 
twisti@1858:       // Get receiver klass:
twisti@1858:       Register O0_klass = O0_argslot;
twisti@1858:       __ load_klass(G3_method_handle, O0_klass);
twisti@1858:       __ verify_oop(O0_klass);
twisti@1858: 
twisti@1858:       // Get target methodOop & entry point:
twisti@1858:       const int base = instanceKlass::vtable_start_offset() * wordSize;
twisti@1858:       assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
twisti@1858: 
twisti@1858:       __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
twisti@1858:       __ add(O0_klass, G5_index, O0_klass);
twisti@1858:       Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
twisti@1858:       __ ld_ptr(vtable_entry_addr, G5_method);
twisti@1858: 
twisti@1858:       __ verify_oop(G5_method);
twisti@1858:       __ jump_indirect_to(G5_method_fie, O1_scratch);
twisti@1858:       __ delayed()->nop();
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _invokeinterface_mh:
twisti@1858:     {
twisti@1858:       // Same as TemplateTable::invokeinterface,
twisti@1858:       // minus the CP setup and profiling:
twisti@1858:       __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
twisti@1858:       Register O1_intf  = O1_scratch;
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, O1_intf);
twisti@1858:       __ ldsw(G3_dmh_vmindex, G5_index);
twisti@1858:       __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
twisti@1858:       __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
twisti@1858: 
twisti@1858:       // Get receiver klass:
twisti@1858:       Register O0_klass = O0_argslot;
twisti@1858:       __ load_klass(G3_method_handle, O0_klass);
twisti@1858:       __ verify_oop(O0_klass);
twisti@1858: 
twisti@1858:       // Get interface:
twisti@1858:       Label no_such_interface;
twisti@1858:       __ verify_oop(O1_intf);
twisti@1858:       __ lookup_interface_method(O0_klass, O1_intf,
twisti@1858:                                  // Note: next two args must be the same:
twisti@1858:                                  G5_index, G5_method,
twisti@1858:                                  O2_scratch,
twisti@1858:                                  O3_scratch,
twisti@1858:                                  no_such_interface);
twisti@1858: 
twisti@1858:       __ verify_oop(G5_method);
twisti@1858:       __ jump_indirect_to(G5_method_fie, O1_scratch);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       __ bind(no_such_interface);
twisti@1858:       // Throw an exception.
twisti@1858:       // For historical reasons, it will be IncompatibleClassChangeError.
twisti@1858:       __ unimplemented("not tested yet");
twisti@1858:       __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch);  // required interface
twisti@1858:       __ mov(O0_klass, O2_scratch);  // bad receiver
twisti@1858:       __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
twisti@1858:       __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch);  // who is complaining?
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _bound_ref_mh:
twisti@1858:   case _bound_int_mh:
twisti@1858:   case _bound_long_mh:
twisti@1858:   case _bound_ref_direct_mh:
twisti@1858:   case _bound_int_direct_mh:
twisti@1858:   case _bound_long_direct_mh:
twisti@1858:     {
twisti@1858:       const bool direct_to_method = (ek >= _bound_ref_direct_mh);
twisti@1858:       BasicType arg_type  = T_ILLEGAL;
twisti@1858:       int       arg_mask  = _INSERT_NO_MASK;
twisti@1858:       int       arg_slots = -1;
twisti@1858:       get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
twisti@1858: 
twisti@1858:       // Make room for the new argument:
twisti@1858:       __ ldsw(G3_bmh_vmargslot, O0_argslot);
twisti@1858:       __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
twisti@1858: 
twisti@1858:       insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
twisti@1858: 
twisti@1858:       // Store bound argument into the new stack slot:
twisti@2201:       __ load_heap_oop(G3_bmh_argument, O1_scratch);
twisti@1858:       if (arg_type == T_OBJECT) {
twisti@1858:         __ st_ptr(O1_scratch, Address(O0_argslot, 0));
twisti@1858:       } else {
twisti@1858:         Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
twisti@1858:         __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type));
twisti@1858:         if (arg_slots == 2) {
twisti@1858:           __ unimplemented("not yet tested");
twisti@1858: #ifndef _LP64
twisti@1858:           __ signx(O2_scratch, O3_scratch);  // Sign extend
twisti@1858: #endif
twisti@1858:           __ st_long(O2_scratch, Address(O0_argslot, 0));  // Uses O2/O3 on !_LP64
twisti@1858:         } else {
twisti@1858:           __ st_ptr( O2_scratch, Address(O0_argslot, 0));
twisti@1858:         }
twisti@1858:       }
twisti@1858: 
twisti@1858:       if (direct_to_method) {
twisti@2201:         __ load_heap_oop(G3_mh_vmtarget, G5_method);  // target is a methodOop
twisti@1858:         __ verify_oop(G5_method);
twisti@1858:         __ jump_indirect_to(G5_method_fie, O1_scratch);
twisti@1858:         __ delayed()->nop();
twisti@1858:       } else {
twisti@2201:         __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);  // target is a methodOop
twisti@1858:         __ verify_oop(G3_method_handle);
twisti@1858:         __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:       }
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_retype_only:
twisti@1858:   case _adapter_retype_raw:
twisti@1858:     // Immediately jump to the next MH layer:
twisti@2201:     __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:     __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     // This is OK when all parameter types widen.
twisti@1858:     // It is also OK when a return type narrows.
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_check_cast:
twisti@1858:     {
twisti@1858:       // Temps:
twisti@1858:       Register G5_klass = G5_index;  // Interesting AMH data.
twisti@1858: 
twisti@1858:       // Check a reference argument before jumping to the next layer of MH:
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858:       Address vmarg = __ argument_address(O0_argslot);
twisti@1858: 
twisti@1858:       // What class are we casting to?
twisti@2201:       __ load_heap_oop(G3_amh_argument, G5_klass);  // This is a Class object!
twisti@2201:       __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
twisti@1858: 
twisti@1858:       Label done;
twisti@1858:       __ ld_ptr(vmarg, O1_scratch);
twisti@1858:       __ tst(O1_scratch);
twisti@1858:       __ brx(Assembler::zero, false, Assembler::pn, done);  // No cast if null.
twisti@1858:       __ delayed()->nop();
twisti@1858:       __ load_klass(O1_scratch, O1_scratch);
twisti@1858: 
twisti@1858:       // Live at this point:
twisti@1858:       // - G5_klass        :  klass required by the target method
twisti@1858:       // - O1_scratch      :  argument klass to test
twisti@1858:       // - G3_method_handle:  adapter method handle
twisti@1858:       __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
twisti@1858: 
twisti@1858:       // If we get here, the type check failed!
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);  // reload argslot field
twisti@2201:       __ load_heap_oop(G3_amh_argument, O3_scratch);  // required class
twisti@1858:       __ ld_ptr(vmarg, O2_scratch);  // bad object
twisti@1858:       __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
twisti@1858:       __ delayed()->mov(Bytecodes::_checkcast, O1_scratch);  // who is complaining?
twisti@1858: 
twisti@1858:       __ bind(done);
twisti@1858:       // Get the new MH:
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_prim_to_prim:
twisti@1858:   case _adapter_ref_to_prim:
twisti@1858:     // Handled completely by optimized cases.
twisti@1858:     __ stop("init_AdapterMethodHandle should not issue this");
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_opt_i2i:        // optimized subcase of adapt_prim_to_prim
twisti@1858: //case _adapter_opt_f2i:        // optimized subcase of adapt_prim_to_prim
twisti@1858:   case _adapter_opt_l2i:        // optimized subcase of adapt_prim_to_prim
twisti@1858:   case _adapter_opt_unboxi:     // optimized subcase of adapt_ref_to_prim
twisti@1858:     {
twisti@1858:       // Perform an in-place conversion to int or an int subword.
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858:       Address vmarg = __ argument_address(O0_argslot);
twisti@1858:       Address value;
twisti@1858:       bool value_left_justified = false;
twisti@1858: 
twisti@1858:       switch (ek) {
twisti@1858:       case _adapter_opt_i2i:
twisti@2256:         value = vmarg;
twisti@2256:         break;
twisti@1858:       case _adapter_opt_l2i:
twisti@2256:         {
twisti@2256:           // just delete the extra slot
twisti@2256:           __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
twisti@2256:           remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
twisti@2256:           value = vmarg = Address(O0_argslot, 0);
twisti@2256:         }
twisti@1858:         break;
twisti@1858:       case _adapter_opt_unboxi:
twisti@1858:         {
twisti@1858:           // Load the value up from the heap.
twisti@1858:           __ ld_ptr(vmarg, O1_scratch);
twisti@1858:           int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
twisti@1858: #ifdef ASSERT
twisti@1858:           for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
twisti@1858:             if (is_subword_type(BasicType(bt)))
twisti@1858:               assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
twisti@1858:           }
twisti@1858: #endif
twisti@1858:           __ null_check(O1_scratch, value_offset);
twisti@1858:           value = Address(O1_scratch, value_offset);
twisti@1858: #ifdef _BIG_ENDIAN
twisti@1858:           // Values stored in objects are packed.
twisti@1858:           value_left_justified = true;
twisti@1858: #endif
twisti@1858:         }
twisti@1858:         break;
twisti@1858:       default:
twisti@1858:         ShouldNotReachHere();
twisti@1858:       }
twisti@1858: 
twisti@1858:       // This check is required on _BIG_ENDIAN
twisti@1858:       Register G5_vminfo = G5_index;
twisti@1858:       __ ldsw(G3_amh_conversion, G5_vminfo);
twisti@1858:       assert(CONV_VMINFO_SHIFT == 0, "preshifted");
twisti@1858: 
twisti@1858:       // Original 32-bit vmdata word must be of this form:
twisti@1858:       // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
twisti@1858:       __ lduw(value, O1_scratch);
twisti@1858:       if (!value_left_justified)
twisti@1858:         __ sll(O1_scratch, G5_vminfo, O1_scratch);
twisti@1858:       Label zero_extend, done;
twisti@1858:       __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
twisti@1858:       __ br(Assembler::zero, false, Assembler::pn, zero_extend);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       // this path is taken for int->byte, int->short
twisti@1858:       __ sra(O1_scratch, G5_vminfo, O1_scratch);
twisti@1858:       __ ba(false, done);
twisti@1858:       __ delayed()->nop();
twisti@1858: 
twisti@1858:       __ bind(zero_extend);
twisti@1858:       // this is taken for int->char
twisti@1858:       __ srl(O1_scratch, G5_vminfo, O1_scratch);
twisti@1858: 
twisti@1858:       __ bind(done);
twisti@1858:       __ st(O1_scratch, vmarg);
twisti@1858: 
twisti@1858:       // Get the new MH:
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_opt_i2l:        // optimized subcase of adapt_prim_to_prim
twisti@1858:   case _adapter_opt_unboxl:     // optimized subcase of adapt_ref_to_prim
twisti@1858:     {
twisti@1858:       // Perform an in-place int-to-long or ref-to-long conversion.
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858: 
twisti@1858:       // On big-endian machine we duplicate the slot and store the MSW
twisti@1858:       // in the first slot.
twisti@1858:       __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
twisti@1858: 
twisti@1858:       insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
twisti@1858: 
twisti@1858:       Address arg_lsw(O0_argslot, 0);
twisti@1861:       Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
twisti@1858: 
twisti@1858:       switch (ek) {
twisti@1858:       case _adapter_opt_i2l:
twisti@1858:         {
twisti@1858:           __ ldsw(arg_lsw, O2_scratch);      // Load LSW
twisti@1858: #ifndef _LP64
twisti@1858:           __ signx(O2_scratch, O3_scratch);  // Sign extend
twisti@1858: #endif
twisti@1858:           __ st_long(O2_scratch, arg_msw);   // Uses O2/O3 on !_LP64
twisti@1858:         }
twisti@1858:         break;
twisti@1858:       case _adapter_opt_unboxl:
twisti@1858:         {
twisti@1858:           // Load the value up from the heap.
twisti@1858:           __ ld_ptr(arg_lsw, O1_scratch);
twisti@1858:           int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
twisti@1858:           assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
twisti@1858:           __ null_check(O1_scratch, value_offset);
twisti@1858:           __ ld_long(Address(O1_scratch, value_offset), O2_scratch);  // Uses O2/O3 on !_LP64
twisti@1858:           __ st_long(O2_scratch, arg_msw);
twisti@1858:         }
twisti@1858:         break;
twisti@1858:       default:
twisti@1858:         ShouldNotReachHere();
twisti@1858:       }
twisti@1858: 
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_opt_f2d:        // optimized subcase of adapt_prim_to_prim
twisti@1858:   case _adapter_opt_d2f:        // optimized subcase of adapt_prim_to_prim
twisti@1858:     {
twisti@1858:       // perform an in-place floating primitive conversion
twisti@1858:       __ unimplemented(entry_name(ek));
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_prim_to_ref:
twisti@1858:     __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_swap_args:
twisti@1858:   case _adapter_rot_args:
twisti@1858:     // handled completely by optimized cases
twisti@1858:     __ stop("init_AdapterMethodHandle should not issue this");
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_opt_swap_1:
twisti@1858:   case _adapter_opt_swap_2:
twisti@1858:   case _adapter_opt_rot_1_up:
twisti@1858:   case _adapter_opt_rot_1_down:
twisti@1858:   case _adapter_opt_rot_2_up:
twisti@1858:   case _adapter_opt_rot_2_down:
twisti@1858:     {
twisti@1858:       int swap_bytes = 0, rotate = 0;
twisti@1858:       get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
twisti@1858: 
twisti@1858:       // 'argslot' is the position of the first argument to swap.
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858:       __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
twisti@1858: 
twisti@1858:       // 'vminfo' is the second.
twisti@1858:       Register O1_destslot = O1_scratch;
twisti@1858:       __ ldsw(G3_amh_conversion, O1_destslot);
twisti@1858:       assert(CONV_VMINFO_SHIFT == 0, "preshifted");
twisti@1858:       __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
twisti@1858:       __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
twisti@1858: 
twisti@1858:       if (!rotate) {
twisti@1858:         for (int i = 0; i < swap_bytes; i += wordSize) {
twisti@1858:           __ ld_ptr(Address(O0_argslot,  i), O2_scratch);
twisti@1858:           __ ld_ptr(Address(O1_destslot, i), O3_scratch);
twisti@1858:           __ st_ptr(O3_scratch, Address(O0_argslot,  i));
twisti@1858:           __ st_ptr(O2_scratch, Address(O1_destslot, i));
twisti@1858:         }
twisti@1858:       } else {
twisti@1858:         // Save the first chunk, which is going to get overwritten.
twisti@1858:         switch (swap_bytes) {
twisti@1858:         case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
twisti@1858:         case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
twisti@1858:         case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
twisti@1858:         default: ShouldNotReachHere();
twisti@1858:         }
twisti@1858: 
twisti@1858:         if (rotate > 0) {
twisti@1858:           // Rorate upward.
twisti@1858:           __ sub(O0_argslot, swap_bytes, O0_argslot);
twisti@1858: #if ASSERT
twisti@1858:           {
twisti@1858:             // Verify that argslot > destslot, by at least swap_bytes.
twisti@1858:             Label L_ok;
twisti@1858:             __ cmp(O0_argslot, O1_destslot);
twisti@1858:             __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
twisti@1858:             __ delayed()->nop();
twisti@1858:             __ stop("source must be above destination (upward rotation)");
twisti@1858:             __ bind(L_ok);
twisti@1858:           }
twisti@1858: #endif
twisti@1858:           // Work argslot down to destslot, copying contiguous data upwards.
twisti@1858:           // Pseudo-code:
twisti@1858:           //   argslot  = src_addr - swap_bytes
twisti@1858:           //   destslot = dest_addr
twisti@1858:           //   while (argslot >= destslot) {
twisti@1858:           //     *(argslot + swap_bytes) = *(argslot + 0);
twisti@1858:           //     argslot--;
twisti@1858:           //   }
twisti@1858:           Label loop;
twisti@1858:           __ bind(loop);
twisti@1858:           __ ld_ptr(Address(O0_argslot, 0), G5_index);
twisti@1858:           __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
twisti@1858:           __ sub(O0_argslot, wordSize, O0_argslot);
twisti@1858:           __ cmp(O0_argslot, O1_destslot);
twisti@1858:           __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
twisti@1858:           __ delayed()->nop();  // FILLME
twisti@1858:         } else {
twisti@1858:           __ add(O0_argslot, swap_bytes, O0_argslot);
twisti@1858: #if ASSERT
twisti@1858:           {
twisti@1858:             // Verify that argslot < destslot, by at least swap_bytes.
twisti@1858:             Label L_ok;
twisti@1858:             __ cmp(O0_argslot, O1_destslot);
twisti@1858:             __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
twisti@1858:             __ delayed()->nop();
twisti@1858:             __ stop("source must be above destination (upward rotation)");
twisti@1858:             __ bind(L_ok);
twisti@1858:           }
twisti@1858: #endif
twisti@1858:           // Work argslot up to destslot, copying contiguous data downwards.
twisti@1858:           // Pseudo-code:
twisti@1858:           //   argslot  = src_addr + swap_bytes
twisti@1858:           //   destslot = dest_addr
twisti@1858:           //   while (argslot >= destslot) {
twisti@1858:           //     *(argslot - swap_bytes) = *(argslot + 0);
twisti@1858:           //     argslot++;
twisti@1858:           //   }
twisti@1858:           Label loop;
twisti@1858:           __ bind(loop);
twisti@1858:           __ ld_ptr(Address(O0_argslot, 0), G5_index);
twisti@1858:           __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
twisti@1858:           __ add(O0_argslot, wordSize, O0_argslot);
twisti@1858:           __ cmp(O0_argslot, O1_destslot);
twisti@1858:           __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
twisti@1858:           __ delayed()->nop();  // FILLME
twisti@1858:         }
twisti@1858: 
twisti@1858:         // Store the original first chunk into the destination slot, now free.
twisti@1858:         switch (swap_bytes) {
twisti@1858:         case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
twisti@1858:         case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
twisti@1858:         case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
twisti@1858:         default: ShouldNotReachHere();
twisti@1858:         }
twisti@1858:       }
twisti@1858: 
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_dup_args:
twisti@1858:     {
twisti@1858:       // 'argslot' is the position of the first argument to duplicate.
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858:       __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
twisti@1858: 
twisti@1858:       // 'stack_move' is negative number of words to duplicate.
twisti@1858:       Register G5_stack_move = G5_index;
twisti@1858:       __ ldsw(G3_amh_conversion, G5_stack_move);
twisti@1858:       __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
twisti@1858: 
twisti@1858:       // Remember the old Gargs (argslot[0]).
twisti@1858:       Register O1_oldarg = O1_scratch;
twisti@1858:       __ mov(Gargs, O1_oldarg);
twisti@1858: 
twisti@1858:       // Move Gargs down to make room for dups.
twisti@1858:       __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
twisti@1858:       __ add(Gargs, G5_stack_move, Gargs);
twisti@1858: 
twisti@1858:       // Compute the new Gargs (argslot[0]).
twisti@1858:       Register O2_newarg = O2_scratch;
twisti@1858:       __ mov(Gargs, O2_newarg);
twisti@1858: 
twisti@1858:       // Copy from oldarg[0...] down to newarg[0...]
twisti@1858:       // Pseude-code:
twisti@1858:       //   O1_oldarg  = old-Gargs
twisti@1858:       //   O2_newarg  = new-Gargs
twisti@1858:       //   O0_argslot = argslot
twisti@1858:       //   while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
twisti@1858:       Label loop;
twisti@1858:       __ bind(loop);
twisti@1858:       __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
twisti@1858:       __ st_ptr(O3_scratch, Address(O2_newarg, 0));
twisti@1858:       __ add(O0_argslot, wordSize, O0_argslot);
twisti@1858:       __ add(O2_newarg,  wordSize, O2_newarg);
twisti@1858:       __ cmp(O2_newarg, O1_oldarg);
twisti@1858:       __ brx(Assembler::less, false, Assembler::pt, loop);
twisti@1858:       __ delayed()->nop();  // FILLME
twisti@1858: 
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_drop_args:
twisti@1858:     {
twisti@1858:       // 'argslot' is the position of the first argument to nuke.
twisti@1858:       __ ldsw(G3_amh_vmargslot, O0_argslot);
twisti@1858:       __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
twisti@1858: 
twisti@1858:       // 'stack_move' is number of words to drop.
twisti@1858:       Register G5_stack_move = G5_index;
twisti@1858:       __ ldsw(G3_amh_conversion, G5_stack_move);
twisti@1858:       __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
twisti@1858: 
twisti@1858:       remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
twisti@1858: 
twisti@2201:       __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
twisti@1858:       __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_collect_args:
twisti@1858:     __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_spread_args:
twisti@1858:     // Handled completely by optimized cases.
twisti@1858:     __ stop("init_AdapterMethodHandle should not issue this");
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_opt_spread_0:
twisti@1858:   case _adapter_opt_spread_1:
twisti@1858:   case _adapter_opt_spread_more:
twisti@1858:     {
twisti@1858:       // spread an array out into a group of arguments
twisti@1858:       __ unimplemented(entry_name(ek));
twisti@1858:     }
twisti@1858:     break;
twisti@1858: 
twisti@1858:   case _adapter_flyby:
twisti@1858:   case _adapter_ricochet:
twisti@1858:     __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
twisti@1858:     break;
twisti@1858: 
twisti@1858:   default:
twisti@1858:     ShouldNotReachHere();
twisti@1858:   }
twisti@1858: 
twisti@1858:   address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
twisti@1858:   __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
twisti@1858: 
twisti@1858:   init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
jrose@1145: }