truffle: src/cpu/x86/vm/methodHandles

comparison src/cpu/x86/vm/methodHandles_x86.cpp @ 6266:1d7922586cf6

7023639: JSR 292 method handle invocation needs a fast path for compiled code 6984705: JSR 292 method handle creation should not go through JNI Summary: remove assembly code for JDK 7 chained method handles Reviewed-by: jrose, twisti, kvn, mhaupt Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>

author	twisti
date	Tue, 24 Jul 2012 10:51:00 -0700
parents	45a1bf98f1bb
children	da91efe96a93

comparison

equal deleted inserted replaced

-:aba91a731143
+:1d7922586cf6
 #define __ _masm->
 #ifdef PRODUCT
 #define BLOCK_COMMENT(str) /* nothing */
+#define STOP(error) stop(error)
 #else
 #define BLOCK_COMMENT(str) __ block_comment(str)
+#define STOP(error) block_comment(error); __ stop(error)
 #endif
 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant.
 static RegisterOrConstant constant(int value) {
 return RegisterOrConstant(value);
 }
-address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
-address interpreted_entry) {
-// Just before the actual machine code entry point, allocate space
-// for a MethodHandleEntry::Data record, so that we can manage everything
-// from one base pointer.
-__ align(wordSize);
-address target = __ pc() + sizeof(Data);
-while (__ pc() < target) {
-__ nop();
-__ align(wordSize);
-}
-MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
-me->set_end_address(__ pc());         // set a temporary end_address
-me->set_from_interpreted_entry(interpreted_entry);
-me->set_type_checking_entry(NULL);
-return (address) me;
-}
-MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
-address start_addr) {
-MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
-assert(me->end_address() == start_addr, "valid ME");
-// Fill in the real end_address:
-__ align(wordSize);
-me->set_end_address(__ pc());
-return me;
-}
-// stack walking support
-frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) {
-RicochetFrame* f = RicochetFrame::from_frame(fr);
-if (map->update_map())
-frame::update_map_with_saved_link(map, &f->_sender_link);
-return frame(f->extended_sender_sp(), f->exact_sender_sp(), f->sender_link(), f->sender_pc());
-}
-void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map) {
-RicochetFrame* f = RicochetFrame::from_frame(fr);
-// pick up the argument type descriptor:
-Thread* thread = Thread::current();
-Handle cookie(thread, f->compute_saved_args_layout(true, true));
-// process fixed part
-blk->do_oop((oop*)f->saved_target_addr());
-blk->do_oop((oop*)f->saved_args_layout_addr());
-// process variable arguments:
-if (cookie.is_null())  return;  // no arguments to describe
-// the cookie is actually the invokeExact method for my target
-// his argument signature is what I'm interested in
-assert(cookie->is_method(), "");
-methodHandle invoker(thread, methodOop(cookie()));
-assert(invoker->name() == vmSymbols::invokeExact_name(), "must be this kind of method");
-assert(!invoker->is_static(), "must have MH argument");
-int slot_count = invoker->size_of_parameters();
-assert(slot_count >= 1, "must include 'this'");
-intptr_t* base = f->saved_args_base();
-intptr_t* retval = NULL;
-if (f->has_return_value_slot())
-retval = f->return_value_slot_addr();
-int slot_num = slot_count;
-intptr_t* loc = &base[slot_num -= 1];
-//blk->do_oop((oop*) loc);   // original target, which is irrelevant
-int arg_num = 0;
-for (SignatureStream ss(invoker->signature()); !ss.is_done(); ss.next()) {
-if (ss.at_return_type())  continue;
-BasicType ptype = ss.type();
-if (ptype == T_ARRAY)  ptype = T_OBJECT; // fold all refs to T_OBJECT
-assert(ptype >= T_BOOLEAN && ptype <= T_OBJECT, "not array or void");
-loc = &base[slot_num -= type2size[ptype]];
-bool is_oop = (ptype == T_OBJECT && loc != retval);
-if (is_oop)  blk->do_oop((oop*)loc);
-arg_num += 1;
-}
-assert(slot_num == 0, "must have processed all the arguments");
-}
-oop MethodHandles::RicochetFrame::compute_saved_args_layout(bool read_cache, bool write_cache) {
-oop cookie = NULL;
-if (read_cache) {
-cookie = saved_args_layout();
-if (cookie != NULL)  return cookie;
-}
-oop target = saved_target();
-oop mtype  = java_lang_invoke_MethodHandle::type(target);
-oop mtform = java_lang_invoke_MethodType::form(mtype);
-cookie = java_lang_invoke_MethodTypeForm::vmlayout(mtform);
-if (write_cache)  {
-(*saved_args_layout_addr()) = cookie;
-}
-return cookie;
-}
-void MethodHandles::RicochetFrame::generate_ricochet_blob(MacroAssembler* _masm,
-// output params:
-int* bounce_offset,
-int* exception_offset,
-int* frame_size_in_words) {
-(*frame_size_in_words) = RicochetFrame::frame_size_in_bytes() / wordSize;
-address start = __ pc();
-#ifdef ASSERT
-__ hlt(); __ hlt(); __ hlt();
-// here's a hint of something special:
-__ push(MAGIC_NUMBER_1);
-__ push(MAGIC_NUMBER_2);
-#endif //ASSERT
-__ hlt();  // not reached
-// A return PC has just been popped from the stack.
-// Return values are in registers.
-// The ebp points into the RicochetFrame, which contains
-// a cleanup continuation we must return to.
-(*bounce_offset) = __ pc() - start;
-BLOCK_COMMENT("ricochet_blob.bounce");
-if (VerifyMethodHandles)  RicochetFrame::verify_clean(_masm);
-trace_method_handle(_masm, "return/ricochet_blob.bounce");
-__ jmp(frame_address(continuation_offset_in_bytes()));
-__ hlt();
-DEBUG_ONLY(__ push(MAGIC_NUMBER_2));
-(*exception_offset) = __ pc() - start;
-BLOCK_COMMENT("ricochet_blob.exception");
-// compare this to Interpreter::rethrow_exception_entry, which is parallel code
-// for example, see TemplateInterpreterGenerator::generate_throw_exception
-// Live registers in:
-//   rax: exception
-//   rdx: return address/pc that threw exception (ignored, always equal to bounce addr)
-__ verify_oop(rax);
-// no need to empty_FPU_stack or reinit_heapbase, since caller frame will do the same if needed
-// Take down the frame.
-// Cf. InterpreterMacroAssembler::remove_activation.
-leave_ricochet_frame(_masm, /*rcx_recv=*/ noreg,
-saved_last_sp_register(),
-/*sender_pc_reg=*/ rdx);
-// In between activations - previous activation type unknown yet
-// compute continuation point - the continuation point expects the
-// following registers set up:
-//
-// rax: exception
-// rdx: return address/pc that threw exception
-// rsp: expression stack of caller
-// rbp: ebp of caller
-__ push(rax);                                  // save exception
-__ push(rdx);                                  // save return address
-Register thread_reg = LP64_ONLY(r15_thread) NOT_LP64(rdi);
-NOT_LP64(__ get_thread(thread_reg));
-__ call_VM_leaf(CAST_FROM_FN_PTR(address,
-SharedRuntime::exception_handler_for_return_address),
-thread_reg, rdx);
-__ mov(rbx, rax);                              // save exception handler
-__ pop(rdx);                                   // restore return address
-__ pop(rax);                                   // restore exception
-__ jmp(rbx);                                   // jump to exception
-// handler of caller
-}
-void MethodHandles::RicochetFrame::enter_ricochet_frame(MacroAssembler* _masm,
-Register rcx_recv,
-Register rax_argv,
-address return_handler,
-Register rbx_temp) {
-const Register saved_last_sp = saved_last_sp_register();
-Address rcx_mh_vmtarget(    rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() );
-Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() );
-// Push the RicochetFrame a word at a time.
-// This creates something similar to an interpreter frame.
-// Cf. TemplateInterpreterGenerator::generate_fixed_frame.
-BLOCK_COMMENT("push RicochetFrame {");
-DEBUG_ONLY(int rfo = (int) sizeof(RicochetFrame));
-assert((rfo -= wordSize) == RicochetFrame::sender_pc_offset_in_bytes(), "");
-#define RF_FIELD(push_value, name)                                      \
-{ push_value;                                                         \
-assert((rfo -= wordSize) == RicochetFrame::name##_offset_in_bytes(), ""); }
-RF_FIELD(__ push(rbp),                   sender_link);
-RF_FIELD(__ push(saved_last_sp),         exact_sender_sp);  // rsi/r13
-RF_FIELD(__ pushptr(rcx_amh_conversion), conversion);
-RF_FIELD(__ push(rax_argv),              saved_args_base);   // can be updated if args are shifted
-RF_FIELD(__ push((int32_t) NULL_WORD),   saved_args_layout); // cache for GC layout cookie
-if (UseCompressedOops) {
-__ load_heap_oop(rbx_temp, rcx_mh_vmtarget);
-RF_FIELD(__ push(rbx_temp),            saved_target);
-} else {
-RF_FIELD(__ pushptr(rcx_mh_vmtarget),  saved_target);
-}
-__ lea(rbx_temp, ExternalAddress(return_handler));
-RF_FIELD(__ push(rbx_temp),              continuation);
-#undef RF_FIELD
-assert(rfo == 0, "fully initialized the RicochetFrame");
-// compute new frame pointer:
-__ lea(rbp, Address(rsp, RicochetFrame::sender_link_offset_in_bytes()));
-// Push guard word #1 in debug mode.
-DEBUG_ONLY(__ push((int32_t) RicochetFrame::MAGIC_NUMBER_1));
-// For debugging, leave behind an indication of which stub built this frame.
-DEBUG_ONLY({ Label L; __ call(L, relocInfo::none); __ bind(L); });
-BLOCK_COMMENT("} RicochetFrame");
-}
-void MethodHandles::RicochetFrame::leave_ricochet_frame(MacroAssembler* _masm,
-Register rcx_recv,
-Register new_sp_reg,
-Register sender_pc_reg) {
-assert_different_registers(rcx_recv, new_sp_reg, sender_pc_reg);
-const Register saved_last_sp = saved_last_sp_register();
-// Take down the frame.
-// Cf. InterpreterMacroAssembler::remove_activation.
-BLOCK_COMMENT("end_ricochet_frame {");
-// TO DO: If (exact_sender_sp - extended_sender_sp) > THRESH, compact the frame down.
-// This will keep stack in bounds even with unlimited tailcalls, each with an adapter.
-if (rcx_recv->is_valid())
-__ movptr(rcx_recv,    RicochetFrame::frame_address(RicochetFrame::saved_target_offset_in_bytes()));
-__ movptr(sender_pc_reg, RicochetFrame::frame_address(RicochetFrame::sender_pc_offset_in_bytes()));
-__ movptr(saved_last_sp, RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes()));
-__ movptr(rbp,           RicochetFrame::frame_address(RicochetFrame::sender_link_offset_in_bytes()));
-__ mov(rsp, new_sp_reg);
-BLOCK_COMMENT("} end_ricochet_frame");
-}
-// Emit code to verify that RBP is pointing at a valid ricochet frame.
-#ifndef PRODUCT
-enum {
-ARG_LIMIT = 255, SLOP = 4,
-// use this parameter for checking for garbage stack movements:
-UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP)
-// the slop defends against false alarms due to fencepost errors
-};
-#endif
-#ifdef ASSERT
-void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) {
-// The stack should look like this:
-//    ... keep1 | dest=42 | keep2 | RF | magic | handler | magic | recursive args |
-// Check various invariants.
-verify_offsets();
-Register rdi_temp = rdi;
-Register rcx_temp = rcx;
-{ __ push(rdi_temp); __ push(rcx_temp); }
-#define UNPUSH_TEMPS \
-{ __ pop(rcx_temp);  __ pop(rdi_temp); }
-Address magic_number_1_addr  = RicochetFrame::frame_address(RicochetFrame::magic_number_1_offset_in_bytes());
-Address magic_number_2_addr  = RicochetFrame::frame_address(RicochetFrame::magic_number_2_offset_in_bytes());
-Address continuation_addr    = RicochetFrame::frame_address(RicochetFrame::continuation_offset_in_bytes());
-Address conversion_addr      = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes());
-Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes());
-Label L_bad, L_ok;
-BLOCK_COMMENT("verify_clean {");
-// Magic numbers must check out:
-__ cmpptr(magic_number_1_addr, (int32_t) MAGIC_NUMBER_1);
-__ jcc(Assembler::notEqual, L_bad);
-__ cmpptr(magic_number_2_addr, (int32_t) MAGIC_NUMBER_2);
-__ jcc(Assembler::notEqual, L_bad);
-// Arguments pointer must look reasonable:
-__ movptr(rcx_temp, saved_args_base_addr);
-__ cmpptr(rcx_temp, rbp);
-__ jcc(Assembler::below, L_bad);
-__ subptr(rcx_temp, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize);
-__ cmpptr(rcx_temp, rbp);
-__ jcc(Assembler::above, L_bad);
-load_conversion_dest_type(_masm, rdi_temp, conversion_addr);
-__ cmpl(rdi_temp, T_VOID);
-__ jcc(Assembler::equal, L_ok);
-__ movptr(rcx_temp, saved_args_base_addr);
-load_conversion_vminfo(_masm, rdi_temp, conversion_addr);
-__ cmpptr(Address(rcx_temp, rdi_temp, Interpreter::stackElementScale()),
-(int32_t) RETURN_VALUE_PLACEHOLDER);
-__ jcc(Assembler::equal, L_ok);
-__ BIND(L_bad);
-UNPUSH_TEMPS;
-__ stop("damaged ricochet frame");
-__ BIND(L_ok);
-UNPUSH_TEMPS;
-BLOCK_COMMENT("} verify_clean");
-#undef UNPUSH_TEMPS
-}
-#endif //ASSERT
 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) {
 if (VerifyMethodHandles)
 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(),
-"AMH argument is a Class");
+"MH argument is a Class");
 __ load_heap_oop(klass_reg, Address(klass_reg, java_lang_Class::klass_offset_in_bytes()));
 }
-void MethodHandles::load_conversion_vminfo(MacroAssembler* _masm, Register reg, Address conversion_field_addr) {
-int bits   = BitsPerByte;
-int offset = (CONV_VMINFO_SHIFT / bits);
-int shift  = (CONV_VMINFO_SHIFT % bits);
-__ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset));
-assert(CONV_VMINFO_MASK == right_n_bits(bits - shift), "else change type of previous load");
-assert(shift == 0, "no shift needed");
-}
-void MethodHandles::load_conversion_dest_type(MacroAssembler* _masm, Register reg, Address conversion_field_addr) {
-int bits   = BitsPerByte;
-int offset = (CONV_DEST_TYPE_SHIFT / bits);
-int shift  = (CONV_DEST_TYPE_SHIFT % bits);
-__ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset));
-assert(CONV_TYPE_MASK == right_n_bits(bits - shift), "else change type of previous load");
-__ shrl(reg, shift);
-DEBUG_ONLY(int conv_type_bits = (int) exact_log2(CONV_TYPE_MASK+1));
-assert((shift + conv_type_bits) == bits, "left justified in byte");
-}
-void MethodHandles::load_stack_move(MacroAssembler* _masm,
-Register rdi_stack_move,
-Register rcx_amh,
-bool might_be_negative) {
-BLOCK_COMMENT("load_stack_move {");
-Address rcx_amh_conversion(rcx_amh, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes());
-__ movl(rdi_stack_move, rcx_amh_conversion);
-__ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT);
-#ifdef _LP64
-if (might_be_negative) {
-// clean high bits of stack motion register (was loaded as an int)
-__ movslq(rdi_stack_move, rdi_stack_move);
-}
-#endif //_LP64
 #ifdef ASSERT
-if (VerifyMethodHandles) {
+static int check_nonzero(const char* xname, int x) {
-Label L_ok, L_bad;
+assert(x != 0, err_msg("%s should be nonzero", xname));
-int32_t stack_move_limit = 0x4000;  // extra-large
+return x;
-__ cmpptr(rdi_stack_move, stack_move_limit);
+}
-__ jcc(Assembler::greaterEqual, L_bad);
+#define NONZERO(x) check_nonzero(#x, x)
-__ cmpptr(rdi_stack_move, -stack_move_limit);
+#else //ASSERT
-__ jcc(Assembler::greater, L_ok);
+#define NONZERO(x) (x)
-__ bind(L_bad);
+#endif //ASSERT
-__ stop("load_stack_move of garbage value");
-__ BIND(L_ok);
-}
-#endif
-BLOCK_COMMENT("} load_stack_move");
-}
 #ifdef ASSERT
-void MethodHandles::RicochetFrame::verify_offsets() {
-// Check compatibility of this struct with the more generally used offsets of class frame:
-int ebp_off = sender_link_offset_in_bytes();  // offset from struct base to local rbp value
-assert(ebp_off + wordSize*frame::interpreter_frame_method_offset      == saved_args_base_offset_in_bytes(), "");
-assert(ebp_off + wordSize*frame::interpreter_frame_last_sp_offset     == conversion_offset_in_bytes(), "");
-assert(ebp_off + wordSize*frame::interpreter_frame_sender_sp_offset   == exact_sender_sp_offset_in_bytes(), "");
-// These last two have to be exact:
-assert(ebp_off + wordSize*frame::link_offset                          == sender_link_offset_in_bytes(), "");
-assert(ebp_off + wordSize*frame::return_addr_offset                   == sender_pc_offset_in_bytes(), "");
-}
-void MethodHandles::RicochetFrame::verify() const {
-verify_offsets();
-assert(magic_number_1() == MAGIC_NUMBER_1, err_msg(PTR_FORMAT " == " PTR_FORMAT, magic_number_1(), MAGIC_NUMBER_1));
-assert(magic_number_2() == MAGIC_NUMBER_2, err_msg(PTR_FORMAT " == " PTR_FORMAT, magic_number_2(), MAGIC_NUMBER_2));
-if (!Universe::heap()->is_gc_active()) {
-if (saved_args_layout() != NULL) {
-assert(saved_args_layout()->is_method(), "must be valid oop");
-}
-if (saved_target() != NULL) {
-assert(java_lang_invoke_MethodHandle::is_instance(saved_target()), "checking frame value");
-}
-}
-int conv_op = adapter_conversion_op(conversion());
-assert(conv_op == java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS ||
-conv_op == java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS ||
-conv_op == java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF,
-"must be a sane conversion");
-if (has_return_value_slot()) {
-assert(*return_value_slot_addr() == RETURN_VALUE_PLACEHOLDER, "");
-}
-}
-#endif //PRODUCT
-#ifdef ASSERT
-void MethodHandles::verify_argslot(MacroAssembler* _masm,
-Register argslot_reg,
-const char* error_message) {
-// Verify that argslot lies within (rsp, rbp].
-Label L_ok, L_bad;
-BLOCK_COMMENT("verify_argslot {");
-__ cmpptr(argslot_reg, rbp);
-__ jccb(Assembler::above, L_bad);
-__ cmpptr(rsp, argslot_reg);
-__ jccb(Assembler::below, L_ok);
-__ bind(L_bad);
-__ stop(error_message);
-__ BIND(L_ok);
-BLOCK_COMMENT("} verify_argslot");
-}
-void MethodHandles::verify_argslots(MacroAssembler* _masm,
-RegisterOrConstant arg_slots,
-Register arg_slot_base_reg,
-bool negate_argslots,
-const char* error_message) {
-// Verify that [argslot..argslot+size) lies within (rsp, rbp).
-Label L_ok, L_bad;
-Register rdi_temp = rdi;
-BLOCK_COMMENT("verify_argslots {");
-__ push(rdi_temp);
-if (negate_argslots) {
-if (arg_slots.is_constant()) {
-arg_slots = -1 * arg_slots.as_constant();
-} else {
-__ movptr(rdi_temp, arg_slots);
-__ negptr(rdi_temp);
-arg_slots = rdi_temp;
-}
-}
-__ lea(rdi_temp, Address(arg_slot_base_reg, arg_slots, Interpreter::stackElementScale()));
-__ cmpptr(rdi_temp, rbp);
-__ pop(rdi_temp);
-__ jcc(Assembler::above, L_bad);
-__ cmpptr(rsp, arg_slot_base_reg);
-__ jcc(Assembler::below, L_ok);
-__ bind(L_bad);
-__ stop(error_message);
-__ BIND(L_ok);
-BLOCK_COMMENT("} verify_argslots");
-}
-// Make sure that arg_slots has the same sign as the given direction.
-// If (and only if) arg_slots is a assembly-time constant, also allow it to be zero.
-void MethodHandles::verify_stack_move(MacroAssembler* _masm,
-RegisterOrConstant arg_slots, int direction) {
-bool allow_zero = arg_slots.is_constant();
-if (direction == 0) { direction = +1; allow_zero = true; }
-assert(stack_move_unit() == -1, "else add extra checks here");
-if (arg_slots.is_register()) {
-Label L_ok, L_bad;
-BLOCK_COMMENT("verify_stack_move {");
-// testl(arg_slots.as_register(), -stack_move_unit() - 1);  // no need
-// jcc(Assembler::notZero, L_bad);
-__ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD);
-if (direction > 0) {
-__ jcc(allow_zero ? Assembler::less : Assembler::lessEqual, L_bad);
-__ cmpptr(arg_slots.as_register(), (int32_t) UNREASONABLE_STACK_MOVE);
-__ jcc(Assembler::less, L_ok);
-} else {
-__ jcc(allow_zero ? Assembler::greater : Assembler::greaterEqual, L_bad);
-__ cmpptr(arg_slots.as_register(), (int32_t) -UNREASONABLE_STACK_MOVE);
-__ jcc(Assembler::greater, L_ok);
-}
-__ bind(L_bad);
-if (direction > 0)
-__ stop("assert arg_slots > 0");
-else
-__ stop("assert arg_slots < 0");
-__ BIND(L_ok);
-BLOCK_COMMENT("} verify_stack_move");
-} else {
-intptr_t size = arg_slots.as_constant();
-if (direction < 0)  size = -size;
-assert(size >= 0, "correct direction of constant move");
-assert(size < UNREASONABLE_STACK_MOVE, "reasonable size of constant move");
-}
-}
 void MethodHandles::verify_klass(MacroAssembler* _masm,
 Register obj, KlassHandle klass,
 const char* error_message) {
 oop* klass_addr = klass.raw_value();
 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() &&
 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(),
 "must be one of the SystemDictionaryHandles");
 Register temp = rdi;
+Register temp2 = noreg;
+LP64_ONLY(temp2 = rscratch1);  // used by MacroAssembler::cmpptr
 Label L_ok, L_bad;
 BLOCK_COMMENT("verify_klass {");
 __ verify_oop(obj);
 __ testptr(obj, obj);
 __ jcc(Assembler::zero, L_bad);
-__ push(temp);
+__ push(temp); if (temp2 != noreg)  __ push(temp2);
+#define UNPUSH { if (temp2 != noreg)  __ pop(temp2);  __ pop(temp); }
 __ load_klass(temp, obj);
 __ cmpptr(temp, ExternalAddress((address) klass_addr));
 __ jcc(Assembler::equal, L_ok);
 intptr_t super_check_offset = klass->super_check_offset();
 __ movptr(temp, Address(temp, super_check_offset));
 __ cmpptr(temp, ExternalAddress((address) klass_addr));
 __ jcc(Assembler::equal, L_ok);
-__ pop(temp);
+UNPUSH;
 __ bind(L_bad);
-__ stop(error_message);
+__ STOP(error_message);
 __ BIND(L_ok);
-__ pop(temp);
+UNPUSH;
 BLOCK_COMMENT("} verify_klass");
 }
+void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
+Label L;
+BLOCK_COMMENT("verify_ref_kind {");
+__ movl(temp, Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes())));
+__ shrl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT);
+__ andl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK);
+__ cmpl(temp, ref_kind);
+__ jcc(Assembler::equal, L);
+{ char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal);
+jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
+if (ref_kind == JVM_REF_invokeVirtual ||
+ref_kind == JVM_REF_invokeSpecial)
+// could do this for all ref_kinds, but would explode assembly code size
+trace_method_handle(_masm, buf);
+__ STOP(buf);
+}
+BLOCK_COMMENT("} verify_ref_kind");
+__ bind(L);
+}
 #endif //ASSERT
-void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp) {
+void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,
-if (JvmtiExport::can_post_interpreter_events()) {
+bool for_compiler_entry) {
+assert(method == rbx, "interpreter calling convention");
+__ verify_oop(method);
+if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
 Label run_compiled_code;
 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
 // compiled code in threads for which the event is enabled.  Check here for
 // interp_only_mode if these events CAN be enabled.
 #ifdef _LP64
 // interp_only is an int, on little endian it is sufficient to test the byte only
 // Is a cmpl faster?
 __ cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0);
 __ jccb(Assembler::zero, run_compiled_code);
 __ jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
-__ bind(run_compiled_code);
+__ BIND(run_compiled_code);
 }
-__ jmp(Address(method, methodOopDesc::from_interpreted_offset()));
-}
+const ByteSize entry_offset = for_compiler_entry ? methodOopDesc::from_compiled_offset() :
+methodOopDesc::from_interpreted_offset();
+__ jmp(Address(method, entry_offset));
+}
+void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
+Register recv, Register method_temp,
+Register temp2,
+bool for_compiler_entry) {
+BLOCK_COMMENT("jump_to_lambda_form {");
+// This is the initial entry point of a lazy method handle.
+// After type checking, it picks up the invoker from the LambdaForm.
+assert_different_registers(recv, method_temp, temp2);
+assert(recv != noreg, "required register");
+assert(method_temp == rbx, "required register for loading method");
+//NOT_PRODUCT({ FlagSetting fs(TraceMethodHandles, true); trace_method_handle(_masm, "LZMH"); });
+// Load the invoker, as MH -> MH.form -> LF.vmentry
+__ verify_oop(recv);
+__ load_heap_oop(method_temp, Address(recv, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes())));
+__ verify_oop(method_temp);
+__ load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes())));
+__ verify_oop(method_temp);
+// the following assumes that a methodOop is normally compressed in the vmtarget field:
+__ load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())));
+__ verify_oop(method_temp);
+if (VerifyMethodHandles && !for_compiler_entry) {
+// make sure recv is already on stack
+__ load_sized_value(temp2,
+Address(method_temp, methodOopDesc::size_of_parameters_offset()),
+sizeof(u2), /*is_signed*/ false);
+// assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), "");
+Label L;
+__ cmpptr(recv, __ argument_address(temp2, -1));
+__ jcc(Assembler::equal, L);
+__ movptr(rax, __ argument_address(temp2, -1));
+__ STOP("receiver not on stack");
+__ BIND(L);
+}
+jump_from_method_handle(_masm, method_temp, temp2, for_compiler_entry);
+BLOCK_COMMENT("} jump_to_lambda_form");
+}
 // Code generation
-address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
+address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
+vmIntrinsics::ID iid) {
+const bool not_for_compiler_entry = false;  // this is the interpreter entry
+assert(is_signature_polymorphic(iid), "expected invoke iid");
+if (iid == vmIntrinsics::_invokeGeneric ||
+iid == vmIntrinsics::_compiledLambdaForm) {
+// Perhaps surprisingly, the symbolic references visible to Java are not directly used.
+// They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
+// They all allow an appendix argument.
+__ hlt();           // empty stubs make SG sick
+return NULL;
+}
+// rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
 // rbx: methodOop
-// rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots])
+// rdx: argument locator (parameter slot count, added to rsp)
-// rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
+// rcx: used as temp to hold mh or receiver
-// rdx, rdi: garbage temp, blown away
+// rax, rdi: garbage temps, blown away
+Register rdx_argp   = rdx;   // argument list ptr, live on error paths
-Register rbx_method = rbx;
+Register rax_temp   = rax;
-Register rcx_recv   = rcx;
+Register rcx_mh     = rcx;   // MH receiver; dies quickly and is recycled
-Register rax_mtype  = rax;
+Register rbx_method = rbx;   // eventual target of this invocation
-Register rdx_temp   = rdx;
-Register rdi_temp   = rdi;
+address code_start = __ pc();
-// emit WrongMethodType path first, to enable jccb back-branch from main path
-Label wrong_method_type;
-__ bind(wrong_method_type);
-Label invoke_generic_slow_path, invoke_exact_error_path;
-assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");;
-__ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact);
-__ jcc(Assembler::notEqual, invoke_generic_slow_path);
-__ jmp(invoke_exact_error_path);
 // here's where control starts out:
 __ align(CodeEntryAlignment);
 address entry_point = __ pc();
-// fetch the MethodType from the method handle into rax (the 'check' register)
-// FIXME: Interpreter should transmit pre-popped stack pointer, to locate base of arg list.
-// This would simplify several touchy bits of code.
-// See 6984712: JSR 292 method handle calls need a clean argument base pointer
-{
-Register tem = rbx_method;
-for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
-__ movptr(rax_mtype, Address(tem, *pchase));
-tem = rax_mtype;          // in case there is another indirection
-}
-}
-// given the MethodType, find out where the MH argument is buried
-__ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp)));
-Register rdx_vmslots = rdx_temp;
-__ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp)));
-Address mh_receiver_slot_addr = __ argument_address(rdx_vmslots);
-__ movptr(rcx_recv, mh_receiver_slot_addr);
-trace_method_handle(_masm, "invokeExact");
-__ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type);
-// Nobody uses the MH receiver slot after this.  Make sure.
-DEBUG_ONLY(__ movptr(mh_receiver_slot_addr, (int32_t)0x999999));
-__ jump_to_method_handle_entry(rcx_recv, rdi_temp);
-// error path for invokeExact (only)
-__ bind(invoke_exact_error_path);
-// ensure that the top of stack is properly aligned.
-__ mov(rdi, rsp);
-__ andptr(rsp, -StackAlignmentInBytes); // Align the stack for the ABI
-__ pushptr(Address(rdi, 0));  // Pick up the return address
-// Stub wants expected type in rax and the actual type in rcx
-__ jump(ExternalAddress(StubRoutines::throw_WrongMethodTypeException_entry()));
-// for invokeGeneric (only), apply argument and result conversions on the fly
-__ bind(invoke_generic_slow_path);
-#ifdef ASSERT
 if (VerifyMethodHandles) {
 Label L;
-__ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric);
+BLOCK_COMMENT("verify_intrinsic_id {");
+__ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) iid);
 __ jcc(Assembler::equal, L);
-__ stop("bad methodOop::intrinsic_id");
+if (iid == vmIntrinsics::_linkToVirtual ||
+iid == vmIntrinsics::_linkToSpecial) {
+// could do this for all kinds, but would explode assembly code size
+trace_method_handle(_masm, "bad methodOop::intrinsic_id");
+}
+__ STOP("bad methodOop::intrinsic_id");
 __ bind(L);
-}
+BLOCK_COMMENT("} verify_intrinsic_id");
-#endif //ASSERT
+}
-Register rbx_temp = rbx_method;  // don't need it now
+// First task:  Find out how big the argument list is.
-// make room on the stack for another pointer:
+Address rdx_first_arg_addr;
-Register rcx_argslot = rcx_recv;
+int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
-__ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1));
+assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic");
-insert_arg_slots(_masm, 2 * stack_move_unit(),
+if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
-rcx_argslot, rbx_temp, rdx_temp);
+__ load_sized_value(rdx_argp,
+Address(rbx_method, methodOopDesc::size_of_parameters_offset()),
-// load up an adapter from the calling type (Java weaves this)
+sizeof(u2), /*is_signed*/ false);
-Register rdx_adapter = rdx_temp;
+// assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), "");
-__ load_heap_oop(rdx_temp,    Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes,               rdi_temp)));
+rdx_first_arg_addr = __ argument_address(rdx_argp, -1);
-__ load_heap_oop(rdx_adapter, Address(rdx_temp,  __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp)));
+} else {
-__ verify_oop(rdx_adapter);
+DEBUG_ONLY(rdx_argp = noreg);
-__ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter);
+}
-// As a trusted first argument, pass the type being called, so the adapter knows
-// the actual types of the arguments and return values.
+if (!is_signature_polymorphic_static(iid)) {
-// (Generic invokers are shared among form-families of method-type.)
+__ movptr(rcx_mh, rdx_first_arg_addr);
-__ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype);
+DEBUG_ONLY(rdx_argp = noreg);
-// FIXME: assert that rdx_adapter is of the right method-type.
+}
-__ mov(rcx, rdx_adapter);
-trace_method_handle(_masm, "invokeGeneric");
+// rdx_first_arg_addr is live!
-__ jump_to_method_handle_entry(rcx, rdi_temp);
+if (TraceMethodHandles) {
+const char* name = vmIntrinsics::name_at(iid);
+if (*name == '_')  name += 1;
+const size_t len = strlen(name) + 50;
+char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);
+const char* suffix = "";
+if (vmIntrinsics::method_for(iid) == NULL ||
+!vmIntrinsics::method_for(iid)->access_flags().is_public()) {
+if (is_signature_polymorphic_static(iid))
+suffix = "/static";
+else
+suffix = "/private";
+}
+jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);
+// note: stub look for mh in rcx
+trace_method_handle(_masm, qname);
+}
+if (iid == vmIntrinsics::_invokeBasic) {
+generate_method_handle_dispatch(_masm, iid, rcx_mh, noreg, not_for_compiler_entry);
+} else {
+// Adjust argument list by popping the trailing MemberName argument.
+Register rcx_recv = noreg;
+if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
+// Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
+__ movptr(rcx_recv = rcx, rdx_first_arg_addr);
+}
+DEBUG_ONLY(rdx_argp = noreg);
+Register rbx_member = rbx_method;  // MemberName ptr; incoming method ptr is dead now
+__ pop(rax_temp);           // return address
+__ pop(rbx_member);         // extract last argument
+__ push(rax_temp);          // re-push return address
+generate_method_handle_dispatch(_masm, iid, rcx_recv, rbx_member, not_for_compiler_entry);
+}
+if (PrintMethodHandleStubs) {
+address code_end = __ pc();
+tty->print_cr("--------");
+tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid));
+Disassembler::decode(code_start, code_end);
+tty->cr();
+}
 return entry_point;
 }
-// Helper to insert argument slots into the stack.
+void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
-// arg_slots must be a multiple of stack_move_unit() and < 0
+vmIntrinsics::ID iid,
-// rax_argslot is decremented to point to the new (shifted) location of the argslot
+Register receiver_reg,
-// But, rdx_temp ends up holding the original value of rax_argslot.
+Register member_reg,
-void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
+bool for_compiler_entry) {
-RegisterOrConstant arg_slots,
+assert(is_signature_polymorphic(iid), "expected invoke iid");
-Register rax_argslot,
+Register rbx_method = rbx;   // eventual target of this invocation
-Register rbx_temp, Register rdx_temp) {
+// temps used in this code are not used in *either* compiled or interpreted calling sequences
-// allow constant zero
+#ifdef _LP64
-if (arg_slots.is_constant() && arg_slots.as_constant() == 0)
+Register temp1 = rscratch1;
-return;
+Register temp2 = rscratch2;
-assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
+Register temp3 = rax;
-(!arg_slots.is_register() ? rsp : arg_slots.as_register()));
+if (for_compiler_entry) {
-if (VerifyMethodHandles)
+assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : j_rarg0), "only valid assignment");
-verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame");
+assert_different_registers(temp1,        j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
-if (VerifyMethodHandles)
+assert_different_registers(temp2,        j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
-verify_stack_move(_masm, arg_slots, -1);
+assert_different_registers(temp3,        j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
+}
-// Make space on the stack for the inserted argument(s).
+#else
-// Then pull down everything shallower than rax_argslot.
+Register temp1 = (for_compiler_entry ? rsi : rdx);
-// The stacked return address gets pulled down with everything else.
+Register temp2 = rdi;
-// That is, copy [rsp, argslot) downward by -size words.  In pseudo-code:
+Register temp3 = rax;
-//   rsp -= size;
+if (for_compiler_entry) {
-//   for (rdx = rsp + size; rdx < argslot; rdx++)
+assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : rcx), "only valid assignment");
-//     rdx[-size] = rdx[0]
+assert_different_registers(temp1,        rcx, rdx);
-//   argslot -= size;
+assert_different_registers(temp2,        rcx, rdx);
-BLOCK_COMMENT("insert_arg_slots {");
+assert_different_registers(temp3,        rcx, rdx);
-__ mov(rdx_temp, rsp);                        // source pointer for copy
+}
-__ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale()));
+#endif
-{
+assert_different_registers(temp1, temp2, temp3, receiver_reg);
-Label loop;
+assert_different_registers(temp1, temp2, temp3, member_reg);
-__ BIND(loop);
+if (!for_compiler_entry)
-// pull one word down each time through the loop
+assert_different_registers(temp1, temp2, temp3, saved_last_sp_register());  // don't trash lastSP
-__ movptr(rbx_temp, Address(rdx_temp, 0));
-__ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp);
+if (iid == vmIntrinsics::_invokeBasic) {
-__ addptr(rdx_temp, wordSize);
+// indirect through MH.form.vmentry.vmtarget
-__ cmpptr(rdx_temp, rax_argslot);
+jump_to_lambda_form(_masm, receiver_reg, rbx_method, temp1, for_compiler_entry);
-__ jcc(Assembler::below, loop);
-}
-// Now move the argslot down, to point to the opened-up space.
-__ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale()));
-BLOCK_COMMENT("} insert_arg_slots");
-}
-// Helper to remove argument slots from the stack.
-// arg_slots must be a multiple of stack_move_unit() and > 0
-void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
-RegisterOrConstant arg_slots,
-Register rax_argslot,
-Register rbx_temp, Register rdx_temp) {
-// allow constant zero
-if (arg_slots.is_constant() && arg_slots.as_constant() == 0)
-return;
-assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
-(!arg_slots.is_register() ? rsp : arg_slots.as_register()));
-if (VerifyMethodHandles)
-verify_argslots(_masm, arg_slots, rax_argslot, false,
-"deleted argument(s) must fall within current frame");
-if (VerifyMethodHandles)
-verify_stack_move(_masm, arg_slots, +1);
-BLOCK_COMMENT("remove_arg_slots {");
-// Pull up everything shallower than rax_argslot.
-// Then remove the excess space on the stack.
-// The stacked return address gets pulled up with everything else.
-// That is, copy [rsp, argslot) upward by size words.  In pseudo-code:
-//   for (rdx = argslot-1; rdx >= rsp; --rdx)
-//     rdx[size] = rdx[0]
-//   argslot += size;
-//   rsp += size;
-__ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy
-{
-Label loop;
-__ BIND(loop);
-// pull one word up each time through the loop
-__ movptr(rbx_temp, Address(rdx_temp, 0));
-__ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp);
-__ addptr(rdx_temp, -wordSize);
-__ cmpptr(rdx_temp, rsp);
-__ jcc(Assembler::aboveEqual, loop);
-}
-// Now move the argslot up, to point to the just-copied block.
-__ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale()));
-// And adjust the argslot address to point at the deletion point.
-__ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale()));
-BLOCK_COMMENT("} remove_arg_slots");
-}
-// Helper to copy argument slots to the top of the stack.
-// The sequence starts with rax_argslot and is counted by slot_count
-// slot_count must be a multiple of stack_move_unit() and >= 0
-// This function blows the temps but does not change rax_argslot.
-void MethodHandles::push_arg_slots(MacroAssembler* _masm,
-Register rax_argslot,
-RegisterOrConstant slot_count,
-int skip_words_count,
-Register rbx_temp, Register rdx_temp) {
-assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
-(!slot_count.is_register() ? rbp : slot_count.as_register()),
-rsp);
-assert(Interpreter::stackElementSize == wordSize, "else change this code");
-if (VerifyMethodHandles)
-verify_stack_move(_masm, slot_count, 0);
-// allow constant zero
-if (slot_count.is_constant() && slot_count.as_constant() == 0)
-return;
-BLOCK_COMMENT("push_arg_slots {");
-Register rbx_top = rbx_temp;
-// There is at most 1 word to carry down with the TOS.
-switch (skip_words_count) {
-case 1: __ pop(rdx_temp); break;
-case 0:                   break;
-default: ShouldNotReachHere();
-}
-if (slot_count.is_constant()) {
-for (int i = slot_count.as_constant() - 1; i >= 0; i--) {
-__ pushptr(Address(rax_argslot, i * wordSize));
-}
 } else {
-Label L_plural, L_loop, L_break;
+// The method is a member invoker used by direct method handles.
-// Emit code to dynamically check for the common cases, zero and one slot.
+if (VerifyMethodHandles) {
-__ cmpl(slot_count.as_register(), (int32_t) 1);
+// make sure the trailing argument really is a MemberName (caller responsibility)
-__ jccb(Assembler::greater, L_plural);
+verify_klass(_masm, member_reg, SystemDictionaryHandles::MemberName_klass(),
-__ jccb(Assembler::less, L_break);
+"MemberName required for invokeVirtual etc.");
-__ pushptr(Address(rax_argslot, 0));
+}
-__ jmpb(L_break);
-__ BIND(L_plural);
+Address member_clazz(    member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()));
+Address member_vmindex(  member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()));
-// Loop for 2 or more:
+Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()));
-//   rbx = &rax[slot_count]
-//   while (rbx > rax)  *(--rsp) = *(--rbx)
+Register temp1_recv_klass = temp1;
-__ lea(rbx_top, Address(rax_argslot, slot_count, Address::times_ptr));
+if (iid != vmIntrinsics::_linkToStatic) {
-__ BIND(L_loop);
+__ verify_oop(receiver_reg);
-__ subptr(rbx_top, wordSize);
+if (iid == vmIntrinsics::_linkToSpecial) {
-__ pushptr(Address(rbx_top, 0));
+// Don't actually load the klass; just null-check the receiver.
-__ cmpptr(rbx_top, rax_argslot);
+__ null_check(receiver_reg);
-__ jcc(Assembler::above, L_loop);
+} else {
-__ bind(L_break);
+// load receiver klass itself
-}
+__ null_check(receiver_reg, oopDesc::klass_offset_in_bytes());
-switch (skip_words_count) {
+__ load_klass(temp1_recv_klass, receiver_reg);
-case 1: __ push(rdx_temp); break;
+__ verify_oop(temp1_recv_klass);
-case 0:                    break;
+}
-default: ShouldNotReachHere();
+BLOCK_COMMENT("check_receiver {");
-}
+// The receiver for the MemberName must be in receiver_reg.
-BLOCK_COMMENT("} push_arg_slots");
+// Check the receiver against the MemberName.clazz
-}
+if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
+// Did not load it above...
-// in-place movement; no change to rsp
+__ load_klass(temp1_recv_klass, receiver_reg);
-// blows rax_temp, rdx_temp
+__ verify_oop(temp1_recv_klass);
-void MethodHandles::move_arg_slots_up(MacroAssembler* _masm,
+}
-Register rbx_bottom,  // invariant
+if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
-Address  top_addr,     // can use rax_temp
+Label L_ok;
-RegisterOrConstant positive_distance_in_slots,
+Register temp2_defc = temp2;
-Register rax_temp, Register rdx_temp) {
+__ load_heap_oop(temp2_defc, member_clazz);
-BLOCK_COMMENT("move_arg_slots_up {");
+load_klass_from_Class(_masm, temp2_defc);
-assert_different_registers(rbx_bottom,
+__ verify_oop(temp2_defc);
-rax_temp, rdx_temp,
+__ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, L_ok);
-positive_distance_in_slots.register_or_noreg());
+// If we get here, the type check failed!
-Label L_loop, L_break;
+__ STOP("receiver class disagrees with MemberName.clazz");
-Register rax_top = rax_temp;
+__ bind(L_ok);
-if (!top_addr.is_same_address(Address(rax_top, 0)))
+}
-__ lea(rax_top, top_addr);
+BLOCK_COMMENT("} check_receiver");
-// Detect empty (or broken) loop:
+}
-#ifdef ASSERT
+if (iid == vmIntrinsics::_linkToSpecial ||
-if (VerifyMethodHandles) {
+iid == vmIntrinsics::_linkToStatic) {
-// Verify that &bottom < &top (non-empty interval)
+DEBUG_ONLY(temp1_recv_klass = noreg);  // these guys didn't load the recv_klass
-Label L_ok, L_bad;
+}
-if (positive_distance_in_slots.is_register()) {
-__ cmpptr(positive_distance_in_slots.as_register(), (int32_t) 0);
+// Live registers at this point:
-__ jcc(Assembler::lessEqual, L_bad);
+//  member_reg - MemberName that was the trailing argument
-}
+//  temp1_recv_klass - klass of stacked receiver, if needed
-__ cmpptr(rbx_bottom, rax_top);
+//  rsi/r13 - interpreter linkage (if interpreted)
-__ jcc(Assembler::below, L_ok);
+//  rcx, rdx, rsi, rdi, r8, r8 - compiler arguments (if compiled)
-__ bind(L_bad);
-__ stop("valid bounds (copy up)");
+bool method_is_live = false;
-__ BIND(L_ok);
+switch (iid) {
-}
+case vmIntrinsics::_linkToSpecial:
-#endif
+if (VerifyMethodHandles) {
-__ cmpptr(rbx_bottom, rax_top);
+verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp3);
-__ jccb(Assembler::aboveEqual, L_break);
+}
-// work rax down to rbx, copying contiguous data upwards
+__ load_heap_oop(rbx_method, member_vmtarget);
-// In pseudo-code:
+method_is_live = true;
-//   [rbx, rax) = &[bottom, top)
+break;
-//   while (--rax >= rbx) *(rax + distance) = *(rax + 0), rax--;
-__ BIND(L_loop);
+case vmIntrinsics::_linkToStatic:
-__ subptr(rax_top, wordSize);
+if (VerifyMethodHandles) {
-__ movptr(rdx_temp, Address(rax_top, 0));
+verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp3);
-__ movptr(          Address(rax_top, positive_distance_in_slots, Address::times_ptr), rdx_temp);
+}
-__ cmpptr(rax_top, rbx_bottom);
+__ load_heap_oop(rbx_method, member_vmtarget);
-__ jcc(Assembler::above, L_loop);
+method_is_live = true;
-assert(Interpreter::stackElementSize == wordSize, "else change loop");
+break;
-__ bind(L_break);
-BLOCK_COMMENT("} move_arg_slots_up");
+case vmIntrinsics::_linkToVirtual:
-}
+{
+// same as TemplateTable::invokevirtual,
-// in-place movement; no change to rsp
+// minus the CP setup and profiling:
-// blows rax_temp, rdx_temp
-void MethodHandles::move_arg_slots_down(MacroAssembler* _masm,
+if (VerifyMethodHandles) {
-Address  bottom_addr,  // can use rax_temp
+verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp3);
-Register rbx_top,      // invariant
+}
-RegisterOrConstant negative_distance_in_slots,
-Register rax_temp, Register rdx_temp) {
+// pick out the vtable index from the MemberName, and then we can discard it:
-BLOCK_COMMENT("move_arg_slots_down {");
+Register temp2_index = temp2;
-assert_different_registers(rbx_top,
+__ movptr(temp2_index, member_vmindex);
-negative_distance_in_slots.register_or_noreg(),
-rax_temp, rdx_temp);
+if (VerifyMethodHandles) {
-Label L_loop, L_break;
+Label L_index_ok;
-Register rax_bottom = rax_temp;
+__ cmpl(temp2_index, 0);
-if (!bottom_addr.is_same_address(Address(rax_bottom, 0)))
+__ jcc(Assembler::greaterEqual, L_index_ok);
-__ lea(rax_bottom, bottom_addr);
+__ STOP("no virtual index");
-// Detect empty (or broken) loop:
+__ BIND(L_index_ok);
-#ifdef ASSERT
+}
-assert(!negative_distance_in_slots.is_constant() || negative_distance_in_slots.as_constant() < 0, "");
-if (VerifyMethodHandles) {
+// Note:  The verifier invariants allow us to ignore MemberName.clazz and vmtarget
-// Verify that &bottom < &top (non-empty interval)
+// at this point.  And VerifyMethodHandles has already checked clazz, if needed.
-Label L_ok, L_bad;
-if (negative_distance_in_slots.is_register()) {
+// get target methodOop & entry point
-__ cmpptr(negative_distance_in_slots.as_register(), (int32_t) 0);
+__ lookup_virtual_method(temp1_recv_klass, temp2_index, rbx_method);
-__ jcc(Assembler::greaterEqual, L_bad);
+method_is_live = true;
-}
+break;
-__ cmpptr(rax_bottom, rbx_top);
+}
-__ jcc(Assembler::below, L_ok);
-__ bind(L_bad);
+case vmIntrinsics::_linkToInterface:
-__ stop("valid bounds (copy down)");
+{
-__ BIND(L_ok);
+// same as TemplateTable::invokeinterface
-}
+// (minus the CP setup and profiling, with different argument motion)
-#endif
+if (VerifyMethodHandles) {
-__ cmpptr(rax_bottom, rbx_top);
+verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp3);
-__ jccb(Assembler::aboveEqual, L_break);
+}
-// work rax up to rbx, copying contiguous data downwards
-// In pseudo-code:
+Register temp3_intf = temp3;
-//   [rax, rbx) = &[bottom, top)
+__ load_heap_oop(temp3_intf, member_clazz);
-//   while (rax < rbx) *(rax - distance) = *(rax + 0), rax++;
+load_klass_from_Class(_masm, temp3_intf);
-__ BIND(L_loop);
+__ verify_oop(temp3_intf);
-__ movptr(rdx_temp, Address(rax_bottom, 0));
-__ movptr(          Address(rax_bottom, negative_distance_in_slots, Address::times_ptr), rdx_temp);
+Register rbx_index = rbx_method;
-__ addptr(rax_bottom, wordSize);
+__ movptr(rbx_index, member_vmindex);
-__ cmpptr(rax_bottom, rbx_top);
+if (VerifyMethodHandles) {
-__ jcc(Assembler::below, L_loop);
+Label L;
-assert(Interpreter::stackElementSize == wordSize, "else change loop");
+__ cmpl(rbx_index, 0);
-__ bind(L_break);
+__ jcc(Assembler::greaterEqual, L);
-BLOCK_COMMENT("} move_arg_slots_down");
+__ STOP("invalid vtable index for MH.invokeInterface");
-}
+__ bind(L);
+}
-// Copy from a field or array element to a stacked argument slot.
-// is_element (ignored) says whether caller is loading an array element instead of an instance field.
+// given intf, index, and recv klass, dispatch to the implementation method
-void MethodHandles::move_typed_arg(MacroAssembler* _masm,
+Label L_no_such_interface;
-BasicType type, bool is_element,
+__ lookup_interface_method(temp1_recv_klass, temp3_intf,
-Address slot_dest, Address value_src,
+// note: next two args must be the same:
-Register rbx_temp, Register rdx_temp) {
+rbx_index, rbx_method,
-BLOCK_COMMENT(!is_element ? "move_typed_arg {" : "move_typed_arg { (array element)");
+temp2,
-if (type == T_OBJECT || type == T_ARRAY) {
+L_no_such_interface);
-__ load_heap_oop(rbx_temp, value_src);
-__ movptr(slot_dest, rbx_temp);
+__ verify_oop(rbx_method);
-} else if (type != T_VOID) {
+jump_from_method_handle(_masm, rbx_method, temp2, for_compiler_entry);
-int  arg_size      = type2aelembytes(type);
+__ hlt();
-bool arg_is_signed = is_signed_subword_type(type);
-int  slot_size     = (arg_size > wordSize) ? arg_size : wordSize;
+__ bind(L_no_such_interface);
-__ load_sized_value(  rdx_temp,  value_src, arg_size, arg_is_signed, rbx_temp);
+__ jump(RuntimeAddress(StubRoutines::throw_IncompatibleClassChangeError_entry()));
-__ store_sized_value( slot_dest, rdx_temp,  slot_size,               rbx_temp);
+break;
 }
-BLOCK_COMMENT("} move_typed_arg");
-}
+default:
+fatal(err_msg("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)));
-void MethodHandles::move_return_value(MacroAssembler* _masm, BasicType type,
+break;
-Address return_slot) {
+}
-BLOCK_COMMENT("move_return_value {");
-// Old versions of the JVM must clean the FPU stack after every return.
+if (method_is_live) {
-#ifndef _LP64
+// live at this point:  rbx_method, rsi/r13 (if interpreted)
-#ifdef COMPILER2
-// The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases
+// After figuring out which concrete method to call, jump into it.
-if ((type == T_FLOAT && UseSSE < 1) || (type == T_DOUBLE && UseSSE < 2)) {
+// Note that this works in the interpreter with no data motion.
-for (int i = 1; i < 8; i++) {
+// But the compiled version will require that rcx_recv be shifted out.
-__ ffree(i);
+__ verify_oop(rbx_method);
-}
+jump_from_method_handle(_masm, rbx_method, temp1, for_compiler_entry);
-} else if (UseSSE < 2) {
+}
-__ empty_FPU_stack();
+}
-}
-#endif //COMPILER2
-#endif //!_LP64
-// Look at the type and pull the value out of the corresponding register.
-if (type == T_VOID) {
-// nothing to do
-} else if (type == T_OBJECT) {
-__ movptr(return_slot, rax);
-} else if (type == T_INT || is_subword_type(type)) {
-// write the whole word, even if only 32 bits is significant
-__ movptr(return_slot, rax);
-} else if (type == T_LONG) {
-// store the value by parts
-// Note: We assume longs are continguous (if misaligned) on the interpreter stack.
-__ store_sized_value(return_slot, rax, BytesPerLong, rdx);
-} else if (NOT_LP64((type == T_FLOAT  && UseSSE < 1) ||
-(type == T_DOUBLE && UseSSE < 2) ||)
-false) {
-// Use old x86 FPU registers:
-if (type == T_FLOAT)
-__ fstp_s(return_slot);
-else
-__ fstp_d(return_slot);
-} else if (type == T_FLOAT) {
-__ movflt(return_slot, xmm0);
-} else if (type == T_DOUBLE) {
-__ movdbl(return_slot, xmm0);
-} else {
-ShouldNotReachHere();
-}
-BLOCK_COMMENT("} move_return_value");
 }
 #ifndef PRODUCT
-#define DESCRIBE_RICOCHET_OFFSET(rf, name) \
-values.describe(frame_no, (intptr_t *) (((uintptr_t)rf) + MethodHandles::RicochetFrame::name##_offset_in_bytes()), #name)
-void MethodHandles::RicochetFrame::describe(const frame* fr, FrameValues& values, int frame_no)  {
-address bp = (address) fr->fp();
-RicochetFrame* rf = (RicochetFrame*)(bp - sender_link_offset_in_bytes());
-// ricochet slots
-DESCRIBE_RICOCHET_OFFSET(rf, exact_sender_sp);
-DESCRIBE_RICOCHET_OFFSET(rf, conversion);
-DESCRIBE_RICOCHET_OFFSET(rf, saved_args_base);
-DESCRIBE_RICOCHET_OFFSET(rf, saved_args_layout);
-DESCRIBE_RICOCHET_OFFSET(rf, saved_target);
-DESCRIBE_RICOCHET_OFFSET(rf, continuation);
-// relevant ricochet targets (in caller frame)
-values.describe(-1, rf->saved_args_base(),  err_msg("*saved_args_base for #%d", frame_no));
-}
-#endif // ASSERT
-#ifndef PRODUCT
-extern "C" void print_method_handle(oop mh);
 void trace_method_handle_stub(const char* adaptername,
 oop mh,
 intptr_t* saved_regs,
 intptr_t* entry_sp) {
 // called as a leaf from native code: do not block the JVM!
-bool has_mh = (strstr(adaptername, "return/") == NULL);  // return adapters don't have rcx_mh
+bool has_mh = (strstr(adaptername, "/static") == NULL &&
+strstr(adaptername, "linkTo") == NULL);    // static linkers don't have MH
 const char* mh_reg_name = has_mh ? "rcx_mh" : "rcx";
-tty->print_cr("MH %s %s="PTR_FORMAT" sp="PTR_FORMAT, adaptername, mh_reg_name, mh, entry_sp);
+tty->print_cr("MH %s %s="PTR_FORMAT" sp="PTR_FORMAT,
+adaptername, mh_reg_name,
+mh, entry_sp);
 if (Verbose) {
 tty->print_cr("Registers:");
 const int saved_regs_count = RegisterImpl::number_of_registers;
 for (int i = 0; i < saved_regs_count; i++) {
 // Stack may not be walkable (invalid PC above FP):
 // Add descriptions without building a Java frame to avoid issues
 values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
 values.describe(-1, dump_sp, "sp for #1");
 }
+values.describe(-1, entry_sp, "raw top of stack");
 tty->print_cr("Stack layout:");
 values.print(p);
 }
-if (has_mh)
+if (has_mh && mh->is_oop()) {
-print_method_handle(mh);
+mh->print();
+if (java_lang_invoke_MethodHandle::is_instance(mh)) {
+if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0)
+java_lang_invoke_MethodHandle::form(mh)->print();
+}
+}
 }
 }
 // The stub wraps the arguments in a struct on the stack to avoid
 // dealing with the different calling conventions for passing 6
 __ leave();
 BLOCK_COMMENT("} trace_method_handle");
 }
 #endif //PRODUCT
-// which conversion op types are implemented here?
-int MethodHandles::adapter_conversion_ops_supported_mask() {
-return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM)
-//OP_PRIM_TO_REF is below...
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS)
-//OP_COLLECT_ARGS is below...
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS)
-|(
-java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 :
-((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS)
-|(1<<java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS)
-))
-);
-}
-//------------------------------------------------------------------------------
-// MethodHandles::generate_method_handle_stub
-//
-// Generate an "entry" field for a method handle.
-// This determines how the method handle will respond to calls.
-void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
-MethodHandles::EntryKind ek_orig = ek_original_kind(ek);
-// Here is the register state during an interpreted call,
-// as set up by generate_method_handle_interpreter_entry():
-// - rbx: garbage temp (was MethodHandle.invoke methodOop, unused)
-// - rcx: receiver method handle
-// - rax: method handle type (only used by the check_mtype entry point)
-// - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
-// - rdx: garbage temp, can blow away
-const Register rcx_recv    = rcx;
-const Register rax_argslot = rax;
-const Register rbx_temp    = rbx;
-const Register rdx_temp    = rdx;
-const Register rdi_temp    = rdi;
-// This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls)
-// and gen_c2i_adapter (from compiled calls):
-const Register saved_last_sp = saved_last_sp_register();
-// Argument registers for _raise_exception.
-// 32-bit: Pass first two oop/int args in registers ECX and EDX.
-const Register rarg0_code     = LP64_ONLY(j_rarg0) NOT_LP64(rcx);
-const Register rarg1_actual   = LP64_ONLY(j_rarg1) NOT_LP64(rdx);
-const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi);
-assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp);
-guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
-// some handy addresses
-Address rcx_mh_vmtarget(    rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() );
-Address rcx_dmh_vmindex(    rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() );
-Address rcx_bmh_vmargslot(  rcx_recv, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes() );
-Address rcx_bmh_argument(   rcx_recv, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes() );
-Address rcx_amh_vmargslot(  rcx_recv, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes() );
-Address rcx_amh_argument(   rcx_recv, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes() );
-Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() );
-Address vmarg;                // __ argument_address(vmargslot)
-const int java_mirror_offset = in_bytes(Klass::java_mirror_offset());
-if (have_entry(ek)) {
-__ nop();                   // empty stubs make SG sick
-return;
-}
-#ifdef ASSERT
-__ push((int32_t) 0xEEEEEEEE);
-__ push((int32_t) (intptr_t) entry_name(ek));
-LP64_ONLY(__ push((int32_t) high((intptr_t) entry_name(ek))));
-__ push((int32_t) 0x33333333);
-#endif //ASSERT
-address interp_entry = __ pc();
-trace_method_handle(_masm, entry_name(ek));
-BLOCK_COMMENT(err_msg("Entry %s {", entry_name(ek)));
-switch ((int) ek) {
-case _raise_exception:
-{
-// Not a real MH entry, but rather shared code for raising an
-// exception.  Since we use the compiled entry, arguments are
-// expected in compiler argument registers.
-assert(raise_exception_method(), "must be set");
-assert(raise_exception_method()->from_compiled_entry(), "method must be linked");
-const Register rax_pc = rax;
-__ pop(rax_pc);  // caller PC
-__ mov(rsp, saved_last_sp);  // cut the stack back to where the caller started
-Register rbx_method = rbx_temp;
-__ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method));
-const int jobject_oop_offset = 0;
-__ movptr(rbx_method, Address(rbx_method, jobject_oop_offset));  // dereference the jobject
-__ movptr(saved_last_sp, rsp);
-__ subptr(rsp, 3 * wordSize);
-__ push(rax_pc);         // restore caller PC
-__ movl  (__ argument_address(constant(2)), rarg0_code);
-__ movptr(__ argument_address(constant(1)), rarg1_actual);
-__ movptr(__ argument_address(constant(0)), rarg2_required);
-jump_from_method_handle(_masm, rbx_method, rax);
-}
-break;
-case _invokestatic_mh:
-case _invokespecial_mh:
-{
-Register rbx_method = rbx_temp;
-__ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop
-__ verify_oop(rbx_method);
-// same as TemplateTable::invokestatic or invokespecial,
-// minus the CP setup and profiling:
-if (ek == _invokespecial_mh) {
-// Must load & check the first argument before entering the target method.
-__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
-__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
-__ null_check(rcx_recv);
-__ verify_oop(rcx_recv);
-}
-jump_from_method_handle(_masm, rbx_method, rax);
-}
-break;
-case _invokevirtual_mh:
-{
-// same as TemplateTable::invokevirtual,
-// minus the CP setup and profiling:
-// pick out the vtable index and receiver offset from the MH,
-// and then we can discard it:
-__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
-Register rbx_index = rbx_temp;
-__ movl(rbx_index, rcx_dmh_vmindex);
-// Note:  The verifier allows us to ignore rcx_mh_vmtarget.
-__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
-__ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
-// get receiver klass
-Register rax_klass = rax_argslot;
-__ load_klass(rax_klass, rcx_recv);
-__ verify_oop(rax_klass);
-// get target methodOop & entry point
-const int base = instanceKlass::vtable_start_offset() * wordSize;
-assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
-Address vtable_entry_addr(rax_klass,
-rbx_index, Address::times_ptr,
-base + vtableEntry::method_offset_in_bytes());
-Register rbx_method = rbx_temp;
-__ movptr(rbx_method, vtable_entry_addr);
-__ verify_oop(rbx_method);
-jump_from_method_handle(_masm, rbx_method, rax);
-}
-break;
-case _invokeinterface_mh:
-{
-// same as TemplateTable::invokeinterface,
-// minus the CP setup and profiling:
-// pick out the interface and itable index from the MH.
-__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
-Register rdx_intf  = rdx_temp;
-Register rbx_index = rbx_temp;
-__ load_heap_oop(rdx_intf, rcx_mh_vmtarget);
-__ movl(rbx_index, rcx_dmh_vmindex);
-__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
-__ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
-// get receiver klass
-Register rax_klass = rax_argslot;
-__ load_klass(rax_klass, rcx_recv);
-__ verify_oop(rax_klass);
-Register rbx_method = rbx_index;
-// get interface klass
-Label no_such_interface;
-__ verify_oop(rdx_intf);
-__ lookup_interface_method(rax_klass, rdx_intf,
-// note: next two args must be the same:
-rbx_index, rbx_method,
-rdi_temp,
-no_such_interface);
-__ verify_oop(rbx_method);
-jump_from_method_handle(_masm, rbx_method, rax);
-__ hlt();
-__ bind(no_such_interface);
-// Throw an exception.
-// For historical reasons, it will be IncompatibleClassChangeError.
-__ mov(rbx_temp, rcx_recv);  // rarg2_required might be RCX
-assert_different_registers(rarg2_required, rbx_temp);
-__ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset));  // required interface
-__ mov(   rarg1_actual,   rbx_temp);                               // bad receiver
-__ movl(  rarg0_code,     (int) Bytecodes::_invokeinterface);      // who is complaining?
-__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
-}
-break;
-case _bound_ref_mh:
-case _bound_int_mh:
-case _bound_long_mh:
-case _bound_ref_direct_mh:
-case _bound_int_direct_mh:
-case _bound_long_direct_mh:
-{
-const bool direct_to_method = (ek >= _bound_ref_direct_mh);
-BasicType arg_type  = ek_bound_mh_arg_type(ek);
-int       arg_slots = type2size[arg_type];
-// make room for the new argument:
-__ movl(rax_argslot, rcx_bmh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot));
-insert_arg_slots(_masm, arg_slots * stack_move_unit(), rax_argslot, rbx_temp, rdx_temp);
-// store bound argument into the new stack slot:
-__ load_heap_oop(rbx_temp, rcx_bmh_argument);
-if (arg_type == T_OBJECT) {
-__ movptr(Address(rax_argslot, 0), rbx_temp);
-} else {
-Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type));
-move_typed_arg(_masm, arg_type, false,
-Address(rax_argslot, 0),
-prim_value_addr,
-rbx_temp, rdx_temp);
-}
-if (direct_to_method) {
-Register rbx_method = rbx_temp;
-__ load_heap_oop(rbx_method, rcx_mh_vmtarget);
-__ verify_oop(rbx_method);
-jump_from_method_handle(_masm, rbx_method, rax);
-} else {
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ verify_oop(rcx_recv);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-}
-break;
-case _adapter_opt_profiling:
-if (java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes() != 0) {
-Address rcx_mh_vmcount(rcx_recv, java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes());
-__ incrementl(rcx_mh_vmcount);
-}
-// fall through
-case _adapter_retype_only:
-case _adapter_retype_raw:
-// immediately jump to the next MH layer:
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ verify_oop(rcx_recv);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-// This is OK when all parameter types widen.
-// It is also OK when a return type narrows.
-break;
-case _adapter_check_cast:
-{
-// temps:
-Register rbx_klass = rbx_temp; // interesting AMH data
-// check a reference argument before jumping to the next layer of MH:
-__ movl(rax_argslot, rcx_amh_vmargslot);
-vmarg = __ argument_address(rax_argslot);
-// What class are we casting to?
-__ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object!
-load_klass_from_Class(_masm, rbx_klass);
-Label done;
-__ movptr(rdx_temp, vmarg);
-__ testptr(rdx_temp, rdx_temp);
-__ jcc(Assembler::zero, done);         // no cast if null
-__ load_klass(rdx_temp, rdx_temp);
-// live at this point:
-// - rbx_klass:  klass required by the target method
-// - rdx_temp:   argument klass to test
-// - rcx_recv:   adapter method handle
-__ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done);
-// If we get here, the type check failed!
-// Call the wrong_method_type stub, passing the failing argument type in rax.
-Register rax_mtype = rax_argslot;
-__ movl(rax_argslot, rcx_amh_vmargslot);  // reload argslot field
-__ movptr(rdx_temp, vmarg);
-assert_different_registers(rarg2_required, rdx_temp);
-__ load_heap_oop(rarg2_required, rcx_amh_argument);             // required class
-__ mov(          rarg1_actual,   rdx_temp);                     // bad object
-__ movl(         rarg0_code,     (int) Bytecodes::_checkcast);  // who is complaining?
-__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
-__ bind(done);
-// get the new MH:
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_prim_to_prim:
-case _adapter_ref_to_prim:
-case _adapter_prim_to_ref:
-// handled completely by optimized cases
-__ stop("init_AdapterMethodHandle should not issue this");
-break;
-case _adapter_opt_i2i:        // optimized subcase of adapt_prim_to_prim
-//case _adapter_opt_f2i:        // optimized subcase of adapt_prim_to_prim
-case _adapter_opt_l2i:        // optimized subcase of adapt_prim_to_prim
-case _adapter_opt_unboxi:     // optimized subcase of adapt_ref_to_prim
-{
-// perform an in-place conversion to int or an int subword
-__ movl(rax_argslot, rcx_amh_vmargslot);
-vmarg = __ argument_address(rax_argslot);
-switch (ek) {
-case _adapter_opt_i2i:
-__ movl(rdx_temp, vmarg);
-break;
-case _adapter_opt_l2i:
-{
-// just delete the extra slot; on a little-endian machine we keep the first
-__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
-remove_arg_slots(_masm, -stack_move_unit(),
-rax_argslot, rbx_temp, rdx_temp);
-vmarg = Address(rax_argslot, -Interpreter::stackElementSize);
-__ movl(rdx_temp, vmarg);
-}
-break;
-case _adapter_opt_unboxi:
-{
-// Load the value up from the heap.
-__ movptr(rdx_temp, vmarg);
-int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
-#ifdef ASSERT
-for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
-if (is_subword_type(BasicType(bt)))
-assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
-}
-#endif
-__ null_check(rdx_temp, value_offset);
-__ movl(rdx_temp, Address(rdx_temp, value_offset));
-// We load this as a word.  Because we are little-endian,
-// the low bits will be correct, but the high bits may need cleaning.
-// The vminfo will guide us to clean those bits.
-}
-break;
-default:
-ShouldNotReachHere();
-}
-// Do the requested conversion and store the value.
-Register rbx_vminfo = rbx_temp;
-load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion);
-// get the new MH:
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-// (now we are done with the old MH)
-// original 32-bit vmdata word must be of this form:
-//    | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
-__ xchgptr(rcx, rbx_vminfo);                // free rcx for shifts
-__ shll(rdx_temp /*, rcx*/);
-Label zero_extend, done;
-__ testl(rcx, CONV_VMINFO_SIGN_FLAG);
-__ jccb(Assembler::zero, zero_extend);
-// this path is taken for int->byte, int->short
-__ sarl(rdx_temp /*, rcx*/);
-__ jmpb(done);
-__ bind(zero_extend);
-// this is taken for int->char
-__ shrl(rdx_temp /*, rcx*/);
-__ bind(done);
-__ movl(vmarg, rdx_temp);  // Store the value.
-__ xchgptr(rcx, rbx_vminfo);                // restore rcx_recv
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_opt_i2l:        // optimized subcase of adapt_prim_to_prim
-case _adapter_opt_unboxl:     // optimized subcase of adapt_ref_to_prim
-{
-// perform an in-place int-to-long or ref-to-long conversion
-__ movl(rax_argslot, rcx_amh_vmargslot);
-// on a little-endian machine we keep the first slot and add another after
-__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
-insert_arg_slots(_masm, stack_move_unit(),
-rax_argslot, rbx_temp, rdx_temp);
-Address vmarg1(rax_argslot, -Interpreter::stackElementSize);
-Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize);
-switch (ek) {
-case _adapter_opt_i2l:
-{
-#ifdef _LP64
-__ movslq(rdx_temp, vmarg1);  // Load sign-extended
-__ movq(vmarg1, rdx_temp);    // Store into first slot
-#else
-__ movl(rdx_temp, vmarg1);
-__ sarl(rdx_temp, BitsPerInt - 1);  // __ extend_sign()
-__ movl(vmarg2, rdx_temp); // store second word
-#endif
-}
-break;
-case _adapter_opt_unboxl:
-{
-// Load the value up from the heap.
-__ movptr(rdx_temp, vmarg1);
-int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
-assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
-__ null_check(rdx_temp, value_offset);
-#ifdef _LP64
-__ movq(rbx_temp, Address(rdx_temp, value_offset));
-__ movq(vmarg1, rbx_temp);
-#else
-__ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt));
-__ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt));
-__ movl(vmarg1, rbx_temp);
-__ movl(vmarg2, rdx_temp);
-#endif
-}
-break;
-default:
-ShouldNotReachHere();
-}
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_opt_f2d:        // optimized subcase of adapt_prim_to_prim
-case _adapter_opt_d2f:        // optimized subcase of adapt_prim_to_prim
-{
-// perform an in-place floating primitive conversion
-__ movl(rax_argslot, rcx_amh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
-if (ek == _adapter_opt_f2d) {
-insert_arg_slots(_masm, stack_move_unit(),
-rax_argslot, rbx_temp, rdx_temp);
-}
-Address vmarg(rax_argslot, -Interpreter::stackElementSize);
-#ifdef _LP64
-if (ek == _adapter_opt_f2d) {
-__ movflt(xmm0, vmarg);
-__ cvtss2sd(xmm0, xmm0);
-__ movdbl(vmarg, xmm0);
-} else {
-__ movdbl(xmm0, vmarg);
-__ cvtsd2ss(xmm0, xmm0);
-__ movflt(vmarg, xmm0);
-}
-#else //_LP64
-if (ek == _adapter_opt_f2d) {
-__ fld_s(vmarg);        // load float to ST0
-__ fstp_d(vmarg);       // store double
-} else {
-__ fld_d(vmarg);        // load double to ST0
-__ fstp_s(vmarg);       // store single
-}
-#endif //_LP64
-if (ek == _adapter_opt_d2f) {
-remove_arg_slots(_masm, -stack_move_unit(),
-rax_argslot, rbx_temp, rdx_temp);
-}
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_swap_args:
-case _adapter_rot_args:
-// handled completely by optimized cases
-__ stop("init_AdapterMethodHandle should not issue this");
-break;
-case _adapter_opt_swap_1:
-case _adapter_opt_swap_2:
-case _adapter_opt_rot_1_up:
-case _adapter_opt_rot_1_down:
-case _adapter_opt_rot_2_up:
-case _adapter_opt_rot_2_down:
-{
-int swap_slots = ek_adapter_opt_swap_slots(ek);
-int rotate     = ek_adapter_opt_swap_mode(ek);
-// 'argslot' is the position of the first argument to swap
-__ movl(rax_argslot, rcx_amh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot));
-// 'vminfo' is the second
-Register rbx_destslot = rbx_temp;
-load_conversion_vminfo(_masm, rbx_destslot, rcx_amh_conversion);
-__ lea(rbx_destslot, __ argument_address(rbx_destslot));
-if (VerifyMethodHandles)
-verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame");
-assert(Interpreter::stackElementSize == wordSize, "else rethink use of wordSize here");
-if (!rotate) {
-// simple swap
-for (int i = 0; i < swap_slots; i++) {
-__ movptr(rdi_temp, Address(rax_argslot,  i * wordSize));
-__ movptr(rdx_temp, Address(rbx_destslot, i * wordSize));
-__ movptr(Address(rax_argslot,  i * wordSize), rdx_temp);
-__ movptr(Address(rbx_destslot, i * wordSize), rdi_temp);
-}
-} else {
-// A rotate is actually pair of moves, with an "odd slot" (or pair)
-// changing place with a series of other slots.
-// First, push the "odd slot", which is going to get overwritten
-for (int i = swap_slots - 1; i >= 0; i--) {
-// handle one with rdi_temp instead of a push:
-if (i == 0)  __ movptr(rdi_temp, Address(rax_argslot, i * wordSize));
-else         __ pushptr(         Address(rax_argslot, i * wordSize));
-}
-if (rotate > 0) {
-// Here is rotate > 0:
-// (low mem)                                          (high mem)
-//     | dest:     more_slots...     | arg: odd_slot :arg+1 |
-// =>
-//     | dest: odd_slot | dest+1: more_slots...      :arg+1 |
-// work argslot down to destslot, copying contiguous data upwards
-// pseudo-code:
-//   rax = src_addr - swap_bytes
-//   rbx = dest_addr
-//   while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--;
-move_arg_slots_up(_masm,
-rbx_destslot,
-Address(rax_argslot, 0),
-swap_slots,
-rax_argslot, rdx_temp);
-} else {
-// Here is the other direction, rotate < 0:
-// (low mem)                                          (high mem)
-//     | arg: odd_slot | arg+1: more_slots...       :dest+1 |
-// =>
-//     | arg:    more_slots...     | dest: odd_slot :dest+1 |
-// work argslot up to destslot, copying contiguous data downwards
-// pseudo-code:
-//   rax = src_addr + swap_bytes
-//   rbx = dest_addr
-//   while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++;
-// dest_slot denotes an exclusive upper limit
-int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS;
-if (limit_bias != 0)
-__ addptr(rbx_destslot, - limit_bias * wordSize);
-move_arg_slots_down(_masm,
-Address(rax_argslot, swap_slots * wordSize),
-rbx_destslot,
--swap_slots,
-rax_argslot, rdx_temp);
-__ subptr(rbx_destslot, swap_slots * wordSize);
-}
-// pop the original first chunk into the destination slot, now free
-for (int i = 0; i < swap_slots; i++) {
-if (i == 0)  __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp);
-else         __ popptr(Address(rbx_destslot, i * wordSize));
-}
-}
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_dup_args:
-{
-// 'argslot' is the position of the first argument to duplicate
-__ movl(rax_argslot, rcx_amh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot));
-// 'stack_move' is negative number of words to duplicate
-Register rdi_stack_move = rdi_temp;
-load_stack_move(_masm, rdi_stack_move, rcx_recv, true);
-if (VerifyMethodHandles) {
-verify_argslots(_masm, rdi_stack_move, rax_argslot, true,
-"copied argument(s) must fall within current frame");
-}
-// insert location is always the bottom of the argument list:
-Address insert_location = __ argument_address(constant(0));
-int pre_arg_words = insert_location.disp() / wordSize;   // return PC is pushed
-assert(insert_location.base() == rsp, "");
-__ negl(rdi_stack_move);
-push_arg_slots(_masm, rax_argslot, rdi_stack_move,
-pre_arg_words, rbx_temp, rdx_temp);
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_drop_args:
-{
-// 'argslot' is the position of the first argument to nuke
-__ movl(rax_argslot, rcx_amh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot));
-// (must do previous push after argslot address is taken)
-// 'stack_move' is number of words to drop
-Register rdi_stack_move = rdi_temp;
-load_stack_move(_masm, rdi_stack_move, rcx_recv, false);
-remove_arg_slots(_masm, rdi_stack_move,
-rax_argslot, rbx_temp, rdx_temp);
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-}
-break;
-case _adapter_collect_args:
-case _adapter_fold_args:
-case _adapter_spread_args:
-// handled completely by optimized cases
-__ stop("init_AdapterMethodHandle should not issue this");
-break;
-case _adapter_opt_collect_ref:
-case _adapter_opt_collect_int:
-case _adapter_opt_collect_long:
-case _adapter_opt_collect_float:
-case _adapter_opt_collect_double:
-case _adapter_opt_collect_void:
-case _adapter_opt_collect_0_ref:
-case _adapter_opt_collect_1_ref:
-case _adapter_opt_collect_2_ref:
-case _adapter_opt_collect_3_ref:
-case _adapter_opt_collect_4_ref:
-case _adapter_opt_collect_5_ref:
-case _adapter_opt_filter_S0_ref:
-case _adapter_opt_filter_S1_ref:
-case _adapter_opt_filter_S2_ref:
-case _adapter_opt_filter_S3_ref:
-case _adapter_opt_filter_S4_ref:
-case _adapter_opt_filter_S5_ref:
-case _adapter_opt_collect_2_S0_ref:
-case _adapter_opt_collect_2_S1_ref:
-case _adapter_opt_collect_2_S2_ref:
-case _adapter_opt_collect_2_S3_ref:
-case _adapter_opt_collect_2_S4_ref:
-case _adapter_opt_collect_2_S5_ref:
-case _adapter_opt_fold_ref:
-case _adapter_opt_fold_int:
-case _adapter_opt_fold_long:
-case _adapter_opt_fold_float:
-case _adapter_opt_fold_double:
-case _adapter_opt_fold_void:
-case _adapter_opt_fold_1_ref:
-case _adapter_opt_fold_2_ref:
-case _adapter_opt_fold_3_ref:
-case _adapter_opt_fold_4_ref:
-case _adapter_opt_fold_5_ref:
-{
-// Given a fresh incoming stack frame, build a new ricochet frame.
-// On entry, TOS points at a return PC, and RBP is the callers frame ptr.
-// RSI/R13 has the caller's exact stack pointer, which we must also preserve.
-// RCX contains an AdapterMethodHandle of the indicated kind.
-// Relevant AMH fields:
-// amh.vmargslot:
-//   points to the trailing edge of the arguments
-//   to filter, collect, or fold.  For a boxing operation,
-//   it points just after the single primitive value.
-// amh.argument:
-//   recursively called MH, on |collect| arguments
-// amh.vmtarget:
-//   final destination MH, on return value, etc.
-// amh.conversion.dest:
-//   tells what is the type of the return value
-//   (not needed here, since dest is also derived from ek)
-// amh.conversion.vminfo:
-//   points to the trailing edge of the return value
-//   when the vmtarget is to be called; this is
-//   equal to vmargslot + (retained ? |collect| : 0)
-// Pass 0 or more argument slots to the recursive target.
-int collect_count_constant = ek_adapter_opt_collect_count(ek);
-// The collected arguments are copied from the saved argument list:
-int collect_slot_constant = ek_adapter_opt_collect_slot(ek);
-assert(ek_orig == _adapter_collect_args ||
-ek_orig == _adapter_fold_args, "");
-bool retain_original_args = (ek_orig == _adapter_fold_args);
-// The return value is replaced (or inserted) at the 'vminfo' argslot.
-// Sometimes we can compute this statically.
-int dest_slot_constant = -1;
-if (!retain_original_args)
-dest_slot_constant = collect_slot_constant;
-else if (collect_slot_constant >= 0 && collect_count_constant >= 0)
-// We are preserving all the arguments, and the return value is prepended,
-// so the return slot is to the left (above) the |collect| sequence.
-dest_slot_constant = collect_slot_constant + collect_count_constant;
-// Replace all those slots by the result of the recursive call.
-// The result type can be one of ref, int, long, float, double, void.
-// In the case of void, nothing is pushed on the stack after return.
-BasicType dest = ek_adapter_opt_collect_type(ek);
-assert(dest == type2wfield[dest], "dest is a stack slot type");
-int dest_count = type2size[dest];
-assert(dest_count == 1 || dest_count == 2 || (dest_count == 0 && dest == T_VOID), "dest has a size");
-// Choose a return continuation.
-EntryKind ek_ret = _adapter_opt_return_any;
-if (dest != T_CONFLICT && OptimizeMethodHandles) {
-switch (dest) {
-case T_INT    : ek_ret = _adapter_opt_return_int;     break;
-case T_LONG   : ek_ret = _adapter_opt_return_long;    break;
-case T_FLOAT  : ek_ret = _adapter_opt_return_float;   break;
-case T_DOUBLE : ek_ret = _adapter_opt_return_double;  break;
-case T_OBJECT : ek_ret = _adapter_opt_return_ref;     break;
-case T_VOID   : ek_ret = _adapter_opt_return_void;    break;
-default       : ShouldNotReachHere();
-}
-if (dest == T_OBJECT && dest_slot_constant >= 0) {
-EntryKind ek_try = EntryKind(_adapter_opt_return_S0_ref + dest_slot_constant);
-if (ek_try <= _adapter_opt_return_LAST &&
-ek_adapter_opt_return_slot(ek_try) == dest_slot_constant) {
-ek_ret = ek_try;
-}
-}
-assert(ek_adapter_opt_return_type(ek_ret) == dest, "");
-}
-// Already pushed:  ... keep1 | collect | keep2 | sender_pc |
-// push(sender_pc);
-// Compute argument base:
-Register rax_argv = rax_argslot;
-__ lea(rax_argv, __ argument_address(constant(0)));
-// Push a few extra argument words, if we need them to store the return value.
-{
-int extra_slots = 0;
-if (retain_original_args) {
-extra_slots = dest_count;
-} else if (collect_count_constant == -1) {
-extra_slots = dest_count;  // collect_count might be zero; be generous
-} else if (dest_count > collect_count_constant) {
-extra_slots = (dest_count - collect_count_constant);
-} else {
-// else we know we have enough dead space in |collect| to repurpose for return values
-}
-DEBUG_ONLY(extra_slots += 1);
-if (extra_slots > 0) {
-__ pop(rbx_temp);   // return value
-__ subptr(rsp, (extra_slots * Interpreter::stackElementSize));
-// Push guard word #2 in debug mode.
-DEBUG_ONLY(__ movptr(Address(rsp, 0), (int32_t) RicochetFrame::MAGIC_NUMBER_2));
-__ push(rbx_temp);
-}
-}
-RicochetFrame::enter_ricochet_frame(_masm, rcx_recv, rax_argv,
-entry(ek_ret)->from_interpreted_entry(), rbx_temp);
-// Now pushed:  ... keep1 | collect | keep2 | RF |
-// some handy frame slots:
-Address exact_sender_sp_addr = RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes());
-Address conversion_addr      = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes());
-Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes());
-#ifdef ASSERT
-if (VerifyMethodHandles && dest != T_CONFLICT) {
-BLOCK_COMMENT("verify AMH.conv.dest");
-load_conversion_dest_type(_masm, rbx_temp, conversion_addr);
-Label L_dest_ok;
-__ cmpl(rbx_temp, (int) dest);
-__ jcc(Assembler::equal, L_dest_ok);
-if (dest == T_INT) {
-for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
-if (is_subword_type(BasicType(bt))) {
-__ cmpl(rbx_temp, (int) bt);
-__ jcc(Assembler::equal, L_dest_ok);
-}
-}
-}
-__ stop("bad dest in AMH.conv");
-__ BIND(L_dest_ok);
-}
-#endif //ASSERT
-// Find out where the original copy of the recursive argument sequence begins.
-Register rax_coll = rax_argv;
-{
-RegisterOrConstant collect_slot = collect_slot_constant;
-if (collect_slot_constant == -1) {
-__ movl(rdi_temp, rcx_amh_vmargslot);
-collect_slot = rdi_temp;
-}
-if (collect_slot_constant != 0)
-__ lea(rax_coll, Address(rax_argv, collect_slot, Interpreter::stackElementScale()));
-// rax_coll now points at the trailing edge of |collect| and leading edge of |keep2|
-}
-// Replace the old AMH with the recursive MH.  (No going back now.)
-// In the case of a boxing call, the recursive call is to a 'boxer' method,
-// such as Integer.valueOf or Long.valueOf.  In the case of a filter
-// or collect call, it will take one or more arguments, transform them,
-// and return some result, to store back into argument_base[vminfo].
-__ load_heap_oop(rcx_recv, rcx_amh_argument);
-if (VerifyMethodHandles)  verify_method_handle(_masm, rcx_recv);
-// Push a space for the recursively called MH first:
-__ push((int32_t)NULL_WORD);
-// Calculate |collect|, the number of arguments we are collecting.
-Register rdi_collect_count = rdi_temp;
-RegisterOrConstant collect_count;
-if (collect_count_constant >= 0) {
-collect_count = collect_count_constant;
-} else {
-__ load_method_handle_vmslots(rdi_collect_count, rcx_recv, rdx_temp);
-collect_count = rdi_collect_count;
-}
-#ifdef ASSERT
-if (VerifyMethodHandles && collect_count_constant >= 0) {
-__ load_method_handle_vmslots(rbx_temp, rcx_recv, rdx_temp);
-Label L_count_ok;
-__ cmpl(rbx_temp, collect_count_constant);
-__ jcc(Assembler::equal, L_count_ok);
-__ stop("bad vminfo in AMH.conv");
-__ BIND(L_count_ok);
-}
-#endif //ASSERT
-// copy |collect| slots directly to TOS:
-push_arg_slots(_masm, rax_coll, collect_count, 0, rbx_temp, rdx_temp);
-// Now pushed:  ... keep1 | collect | keep2 | RF... | collect |
-// rax_coll still points at the trailing edge of |collect| and leading edge of |keep2|
-// If necessary, adjust the saved arguments to make room for the eventual return value.
-// Normal adjustment:  ... keep1 | +dest+ | -collect- | keep2 | RF... | collect |
-// If retaining args:  ... keep1 | +dest+ |  collect  | keep2 | RF... | collect |
-// In the non-retaining case, this might move keep2 either up or down.
-// We don't have to copy the whole | RF... collect | complex,
-// but we must adjust RF.saved_args_base.
-// Also, from now on, we will forget about the original copy of |collect|.
-// If we are retaining it, we will treat it as part of |keep2|.
-// For clarity we will define |keep3| = |collect|keep2| or |keep2|.
-BLOCK_COMMENT("adjust trailing arguments {");
-// Compare the sizes of |+dest+| and |-collect-|, which are opposed opening and closing movements.
-int                open_count  = dest_count;
-RegisterOrConstant close_count = collect_count_constant;
-Register rdi_close_count = rdi_collect_count;
-if (retain_original_args) {
-close_count = constant(0);
-} else if (collect_count_constant == -1) {
-close_count = rdi_collect_count;
-}
-// How many slots need moving?  This is simply dest_slot (0 => no |keep3|).
-RegisterOrConstant keep3_count;
-Register rsi_keep3_count = rsi;  // can repair from RF.exact_sender_sp
-if (dest_slot_constant >= 0) {
-keep3_count = dest_slot_constant;
-} else  {
-load_conversion_vminfo(_masm, rsi_keep3_count, conversion_addr);
-keep3_count = rsi_keep3_count;
-}
-#ifdef ASSERT
-if (VerifyMethodHandles && dest_slot_constant >= 0) {
-load_conversion_vminfo(_masm, rbx_temp, conversion_addr);
-Label L_vminfo_ok;
-__ cmpl(rbx_temp, dest_slot_constant);
-__ jcc(Assembler::equal, L_vminfo_ok);
-__ stop("bad vminfo in AMH.conv");
-__ BIND(L_vminfo_ok);
-}
-#endif //ASSERT
-// tasks remaining:
-bool move_keep3 = (!keep3_count.is_constant() || keep3_count.as_constant() != 0);
-bool stomp_dest = (NOT_DEBUG(dest == T_OBJECT) DEBUG_ONLY(dest_count != 0));
-bool fix_arg_base = (!close_count.is_constant() || open_count != close_count.as_constant());
-if (stomp_dest | fix_arg_base) {
-// we will probably need an updated rax_argv value
-if (collect_slot_constant >= 0) {
-// rax_coll already holds the leading edge of |keep2|, so tweak it
-assert(rax_coll == rax_argv, "elided a move");
-if (collect_slot_constant != 0)
-__ subptr(rax_argv, collect_slot_constant * Interpreter::stackElementSize);
-} else {
-// Just reload from RF.saved_args_base.
-__ movptr(rax_argv, saved_args_base_addr);
-}
-}
-// Old and new argument locations (based at slot 0).
-// Net shift (&new_argv - &old_argv) is (close_count - open_count).
-bool zero_open_count = (open_count == 0);  // remember this bit of info
-if (move_keep3 && fix_arg_base) {
-// It will be easier to have everything in one register:
-if (close_count.is_register()) {
-// Deduct open_count from close_count register to get a clean +/- value.
-__ subptr(close_count.as_register(), open_count);
-} else {
-close_count = close_count.as_constant() - open_count;
-}
-open_count = 0;
-}
-Address old_argv(rax_argv, 0);
-Address new_argv(rax_argv, close_count,  Interpreter::stackElementScale(),
-- open_count * Interpreter::stackElementSize);
-// First decide if any actual data are to be moved.
-// We can skip if (a) |keep3| is empty, or (b) the argument list size didn't change.
-// (As it happens, all movements involve an argument list size change.)
-// If there are variable parameters, use dynamic checks to skip around the whole mess.
-Label L_done;
-if (!keep3_count.is_constant()) {
-__ testl(keep3_count.as_register(), keep3_count.as_register());
-__ jcc(Assembler::zero, L_done);
-}
-if (!close_count.is_constant()) {
-__ cmpl(close_count.as_register(), open_count);
-__ jcc(Assembler::equal, L_done);
-}
-if (move_keep3 && fix_arg_base) {
-bool emit_move_down = false, emit_move_up = false, emit_guard = false;
-if (!close_count.is_constant()) {
-emit_move_down = emit_guard = !zero_open_count;
-emit_move_up   = true;
-} else if (open_count != close_count.as_constant()) {
-emit_move_down = (open_count > close_count.as_constant());
-emit_move_up   = !emit_move_down;
-}
-Label L_move_up;
-if (emit_guard) {
-__ cmpl(close_count.as_register(), open_count);
-__ jcc(Assembler::greater, L_move_up);
-}
-if (emit_move_down) {
-// Move arguments down if |+dest+| > |-collect-|
-// (This is rare, except when arguments are retained.)
-// This opens space for the return value.
-if (keep3_count.is_constant()) {
-for (int i = 0; i < keep3_count.as_constant(); i++) {
-__ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize));
-__ movptr(          new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp);
-}
-} else {
-Register rbx_argv_top = rbx_temp;
-__ lea(rbx_argv_top, old_argv.plus_disp(keep3_count, Interpreter::stackElementScale()));
-move_arg_slots_down(_masm,
-old_argv,     // beginning of old argv
-rbx_argv_top, // end of old argv
-close_count,  // distance to move down (must be negative)
-rax_argv, rdx_temp);
-// Used argv as an iteration variable; reload from RF.saved_args_base.
-__ movptr(rax_argv, saved_args_base_addr);
-}
-}
-if (emit_guard) {
-__ jmp(L_done);  // assumes emit_move_up is true also
-__ BIND(L_move_up);
-}
-if (emit_move_up) {
-// Move arguments up if |+dest+| < |-collect-|
-// (This is usual, except when |keep3| is empty.)
-// This closes up the space occupied by the now-deleted collect values.
-if (keep3_count.is_constant()) {
-for (int i = keep3_count.as_constant() - 1; i >= 0; i--) {
-__ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize));
-__ movptr(          new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp);
-}
-} else {
-Address argv_top = old_argv.plus_disp(keep3_count, Interpreter::stackElementScale());
-move_arg_slots_up(_masm,
-rax_argv,     // beginning of old argv
-argv_top,     // end of old argv
-close_count,  // distance to move up (must be positive)
-rbx_temp, rdx_temp);
-}
-}
-}
-__ BIND(L_done);
-if (fix_arg_base) {
-// adjust RF.saved_args_base by adding (close_count - open_count)
-if (!new_argv.is_same_address(Address(rax_argv, 0)))
-__ lea(rax_argv, new_argv);
-__ movptr(saved_args_base_addr, rax_argv);
-}
-if (stomp_dest) {
-// Stomp the return slot, so it doesn't hold garbage.
-// This isn't strictly necessary, but it may help detect bugs.
-int forty_two = RicochetFrame::RETURN_VALUE_PLACEHOLDER;
-__ movptr(Address(rax_argv, keep3_count, Address::times_ptr),
-(int32_t) forty_two);
-// uses rsi_keep3_count
-}
-BLOCK_COMMENT("} adjust trailing arguments");
-BLOCK_COMMENT("do_recursive_call");
-__ mov(saved_last_sp, rsp);    // set rsi/r13 for callee
-__ pushptr(ExternalAddress(SharedRuntime::ricochet_blob()->bounce_addr()).addr());
-// The globally unique bounce address has two purposes:
-// 1. It helps the JVM recognize this frame (frame::is_ricochet_frame).
-// 2. When returned to, it cuts back the stack and redirects control flow
-//    to the return handler.
-// The return handler will further cut back the stack when it takes
-// down the RF.  Perhaps there is a way to streamline this further.
-// State during recursive call:
-// ... keep1 | dest | dest=42 | keep3 | RF... | collect | bounce_pc |
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-break;
-}
-case _adapter_opt_return_ref:
-case _adapter_opt_return_int:
-case _adapter_opt_return_long:
-case _adapter_opt_return_float:
-case _adapter_opt_return_double:
-case _adapter_opt_return_void:
-case _adapter_opt_return_S0_ref:
-case _adapter_opt_return_S1_ref:
-case _adapter_opt_return_S2_ref:
-case _adapter_opt_return_S3_ref:
-case _adapter_opt_return_S4_ref:
-case _adapter_opt_return_S5_ref:
-{
-BasicType dest_type_constant = ek_adapter_opt_return_type(ek);
-int       dest_slot_constant = ek_adapter_opt_return_slot(ek);
-if (VerifyMethodHandles)  RicochetFrame::verify_clean(_masm);
-if (dest_slot_constant == -1) {
-// The current stub is a general handler for this dest_type.
-// It can be called from _adapter_opt_return_any below.
-// Stash the address in a little table.
-assert((dest_type_constant & CONV_TYPE_MASK) == dest_type_constant, "oob");
-address return_handler = __ pc();
-_adapter_return_handlers[dest_type_constant] = return_handler;
-if (dest_type_constant == T_INT) {
-// do the subword types too
-for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
-if (is_subword_type(BasicType(bt)) &&
-_adapter_return_handlers[bt] == NULL) {
-_adapter_return_handlers[bt] = return_handler;
-}
-}
-}
-}
-Register rbx_arg_base = rbx_temp;
-assert_different_registers(rax, rdx,  // possibly live return value registers
-rdi_temp, rbx_arg_base);
-Address conversion_addr      = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes());
-Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes());
-__ movptr(rbx_arg_base, saved_args_base_addr);
-RegisterOrConstant dest_slot = dest_slot_constant;
-if (dest_slot_constant == -1) {
-load_conversion_vminfo(_masm, rdi_temp, conversion_addr);
-dest_slot = rdi_temp;
-}
-// Store the result back into the argslot.
-// This code uses the interpreter calling sequence, in which the return value
-// is usually left in the TOS register, as defined by InterpreterMacroAssembler::pop.
-// There are certain irregularities with floating point values, which can be seen
-// in TemplateInterpreterGenerator::generate_return_entry_for.
-move_return_value(_masm, dest_type_constant, Address(rbx_arg_base, dest_slot, Interpreter::stackElementScale()));
-RicochetFrame::leave_ricochet_frame(_masm, rcx_recv, rbx_arg_base, rdx_temp);
-__ push(rdx_temp);  // repush the return PC
-// Load the final target and go.
-if (VerifyMethodHandles)  verify_method_handle(_masm, rcx_recv);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-__ hlt(); // --------------------
-break;
-}
-case _adapter_opt_return_any:
-{
-if (VerifyMethodHandles)  RicochetFrame::verify_clean(_masm);
-Register rdi_conv = rdi_temp;
-assert_different_registers(rax, rdx,  // possibly live return value registers
-rdi_conv, rbx_temp);
-Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes());
-load_conversion_dest_type(_masm, rdi_conv, conversion_addr);
-__ lea(rbx_temp, ExternalAddress((address) &_adapter_return_handlers[0]));
-__ movptr(rbx_temp, Address(rbx_temp, rdi_conv, Address::times_ptr));
-#ifdef ASSERT
-{ Label L_badconv;
-__ testptr(rbx_temp, rbx_temp);
-__ jccb(Assembler::zero, L_badconv);
-__ jmp(rbx_temp);
-__ bind(L_badconv);
-__ stop("bad method handle return");
-}
-#else //ASSERT
-__ jmp(rbx_temp);
-#endif //ASSERT
-break;
-}
-case _adapter_opt_spread_0:
-case _adapter_opt_spread_1_ref:
-case _adapter_opt_spread_2_ref:
-case _adapter_opt_spread_3_ref:
-case _adapter_opt_spread_4_ref:
-case _adapter_opt_spread_5_ref:
-case _adapter_opt_spread_ref:
-case _adapter_opt_spread_byte:
-case _adapter_opt_spread_char:
-case _adapter_opt_spread_short:
-case _adapter_opt_spread_int:
-case _adapter_opt_spread_long:
-case _adapter_opt_spread_float:
-case _adapter_opt_spread_double:
-{
-// spread an array out into a group of arguments
-int length_constant = ek_adapter_opt_spread_count(ek);
-bool length_can_be_zero = (length_constant == 0);
-if (length_constant < 0) {
-// some adapters with variable length must handle the zero case
-if (!OptimizeMethodHandles ||
-ek_adapter_opt_spread_type(ek) != T_OBJECT)
-length_can_be_zero = true;
-}
-// find the address of the array argument
-__ movl(rax_argslot, rcx_amh_vmargslot);
-__ lea(rax_argslot, __ argument_address(rax_argslot));
-// grab another temp
-Register rsi_temp = rsi;
-// arx_argslot points both to the array and to the first output arg
-vmarg = Address(rax_argslot, 0);
-// Get the array value.
-Register  rdi_array       = rdi_temp;
-Register  rdx_array_klass = rdx_temp;
-BasicType elem_type = ek_adapter_opt_spread_type(ek);
-int       elem_slots = type2size[elem_type];  // 1 or 2
-int       array_slots = 1;  // array is always a T_OBJECT
-int       length_offset   = arrayOopDesc::length_offset_in_bytes();
-int       elem0_offset    = arrayOopDesc::base_offset_in_bytes(elem_type);
-__ movptr(rdi_array, vmarg);
-Label L_array_is_empty, L_insert_arg_space, L_copy_args, L_args_done;
-if (length_can_be_zero) {
-// handle the null pointer case, if zero is allowed
-Label L_skip;
-if (length_constant < 0) {
-load_conversion_vminfo(_masm, rbx_temp, rcx_amh_conversion);
-__ testl(rbx_temp, rbx_temp);
-__ jcc(Assembler::notZero, L_skip);
-}
-__ testptr(rdi_array, rdi_array);
-__ jcc(Assembler::notZero, L_skip);
-// If 'rsi' contains the 'saved_last_sp' (this is only the
-// case in a 32-bit version of the VM) we have to save 'rsi'
-// on the stack because later on (at 'L_array_is_empty') 'rsi'
-// will be overwritten.
-{ if (rsi_temp == saved_last_sp)  __ push(saved_last_sp); }
-// Also prepare a handy macro which restores 'rsi' if required.
-#define UNPUSH_RSI                                                      \
-{ if (rsi_temp == saved_last_sp)  __ pop(saved_last_sp); }
-__ jmp(L_array_is_empty);
-__ bind(L_skip);
-}
-__ null_check(rdi_array, oopDesc::klass_offset_in_bytes());
-__ load_klass(rdx_array_klass, rdi_array);
-// Save 'rsi' if required (see comment above).  Do this only
-// after the null check such that the exception handler which is
-// called in the case of a null pointer exception will not be
-// confused by the extra value on the stack (it expects the
-// return pointer on top of the stack)
-{ if (rsi_temp == saved_last_sp)  __ push(saved_last_sp); }
-// Check the array type.
-Register rbx_klass = rbx_temp;
-__ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object!
-load_klass_from_Class(_masm, rbx_klass);
-Label ok_array_klass, bad_array_klass, bad_array_length;
-__ check_klass_subtype(rdx_array_klass, rbx_klass, rsi_temp, ok_array_klass);
-// If we get here, the type check failed!
-__ jmp(bad_array_klass);
-__ BIND(ok_array_klass);
-// Check length.
-if (length_constant >= 0) {
-__ cmpl(Address(rdi_array, length_offset), length_constant);
-} else {
-Register rbx_vminfo = rbx_temp;
-load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion);
-__ cmpl(rbx_vminfo, Address(rdi_array, length_offset));
-}
-__ jcc(Assembler::notEqual, bad_array_length);
-Register rdx_argslot_limit = rdx_temp;
-// Array length checks out.  Now insert any required stack slots.
-if (length_constant == -1) {
-// Form a pointer to the end of the affected region.
-__ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize));
-// 'stack_move' is negative number of words to insert
-// This number already accounts for elem_slots.
-Register rsi_stack_move = rsi_temp;
-load_stack_move(_masm, rsi_stack_move, rcx_recv, true);
-__ cmpptr(rsi_stack_move, 0);
-assert(stack_move_unit() < 0, "else change this comparison");
-__ jcc(Assembler::less, L_insert_arg_space);
-__ jcc(Assembler::equal, L_copy_args);
-// single argument case, with no array movement
-__ BIND(L_array_is_empty);
-remove_arg_slots(_masm, -stack_move_unit() * array_slots,
-rax_argslot, rbx_temp, rdx_temp);
-__ jmp(L_args_done);  // no spreading to do
-__ BIND(L_insert_arg_space);
-// come here in the usual case, stack_move < 0 (2 or more spread arguments)
-Register rdi_temp = rdi_array;  // spill this
-insert_arg_slots(_masm, rsi_stack_move,
-rax_argslot, rbx_temp, rdi_temp);
-// reload the array since rsi was killed
-// reload from rdx_argslot_limit since rax_argslot is now decremented
-__ movptr(rdi_array, Address(rdx_argslot_limit, -Interpreter::stackElementSize));
-} else if (length_constant >= 1) {
-int new_slots = (length_constant * elem_slots) - array_slots;
-insert_arg_slots(_masm, new_slots * stack_move_unit(),
-rax_argslot, rbx_temp, rdx_temp);
-} else if (length_constant == 0) {
-__ BIND(L_array_is_empty);
-remove_arg_slots(_masm, -stack_move_unit() * array_slots,
-rax_argslot, rbx_temp, rdx_temp);
-} else {
-ShouldNotReachHere();
-}
-// Copy from the array to the new slots.
-// Note: Stack change code preserves integrity of rax_argslot pointer.
-// So even after slot insertions, rax_argslot still points to first argument.
-// Beware:  Arguments that are shallow on the stack are deep in the array,
-// and vice versa.  So a downward-growing stack (the usual) has to be copied
-// elementwise in reverse order from the source array.
-__ BIND(L_copy_args);
-if (length_constant == -1) {
-// [rax_argslot, rdx_argslot_limit) is the area we are inserting into.
-// Array element [0] goes at rdx_argslot_limit[-wordSize].
-Register rdi_source = rdi_array;
-__ lea(rdi_source, Address(rdi_array, elem0_offset));
-Register rdx_fill_ptr = rdx_argslot_limit;
-Label loop;
-__ BIND(loop);
-__ addptr(rdx_fill_ptr, -Interpreter::stackElementSize * elem_slots);
-move_typed_arg(_masm, elem_type, true,
-Address(rdx_fill_ptr, 0), Address(rdi_source, 0),
-rbx_temp, rsi_temp);
-__ addptr(rdi_source, type2aelembytes(elem_type));
-__ cmpptr(rdx_fill_ptr, rax_argslot);
-__ jcc(Assembler::above, loop);
-} else if (length_constant == 0) {
-// nothing to copy
-} else {
-int elem_offset = elem0_offset;
-int slot_offset = length_constant * Interpreter::stackElementSize;
-for (int index = 0; index < length_constant; index++) {
-slot_offset -= Interpreter::stackElementSize * elem_slots;  // fill backward
-move_typed_arg(_masm, elem_type, true,
-Address(rax_argslot, slot_offset), Address(rdi_array, elem_offset),
-rbx_temp, rsi_temp);
-elem_offset += type2aelembytes(elem_type);
-}
-}
-__ BIND(L_args_done);
-// Arguments are spread.  Move to next method handle.
-UNPUSH_RSI;
-__ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
-__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-__ bind(bad_array_klass);
-UNPUSH_RSI;
-assert(!vmarg.uses(rarg2_required), "must be different registers");
-__ load_heap_oop( rarg2_required, Address(rdx_array_klass, java_mirror_offset));  // required type
-__ movptr(        rarg1_actual,   vmarg);                                         // bad array
-__ movl(          rarg0_code,     (int) Bytecodes::_aaload);                      // who is complaining?
-__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
-__ bind(bad_array_length);
-UNPUSH_RSI;
-assert(!vmarg.uses(rarg2_required), "must be different registers");
-__ mov(    rarg2_required, rcx_recv);                       // AMH requiring a certain length
-__ movptr( rarg1_actual,   vmarg);                          // bad array
-__ movl(   rarg0_code,     (int) Bytecodes::_arraylength);  // who is complaining?
-__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
-#undef UNPUSH_RSI
-break;
-}
-default:
-// do not require all platforms to recognize all adapter types
-__ nop();
-return;
-}
-BLOCK_COMMENT(err_msg("} Entry %s", entry_name(ek)));
-__ hlt();
-address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
-__ unimplemented(entry_name(ek)); // %%% FIXME: NYI
-init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
-}

Mercurial > hg > truffle

comparison src/cpu/x86/vm/methodHandles_x86.cpp @ 6266:1d7922586cf6