Mon, 04 Jan 2010 18:38:08 +0100
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
Summary: During the work for 6829187 we have fixed a number of basic bugs which are logically grouped with 6815692 and 6858164 but which must be reviewed and pushed separately.
Reviewed-by: kvn, never
1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_methodHandles_x86.cpp.incl"
28 #define __ _masm->
30 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
31 address interpreted_entry) {
32 // Just before the actual machine code entry point, allocate space
33 // for a MethodHandleEntry::Data record, so that we can manage everything
34 // from one base pointer.
35 __ align(wordSize);
36 address target = __ pc() + sizeof(Data);
37 while (__ pc() < target) {
38 __ nop();
39 __ align(wordSize);
40 }
42 MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
43 me->set_end_address(__ pc()); // set a temporary end_address
44 me->set_from_interpreted_entry(interpreted_entry);
45 me->set_type_checking_entry(NULL);
47 return (address) me;
48 }
50 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
51 address start_addr) {
52 MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
53 assert(me->end_address() == start_addr, "valid ME");
55 // Fill in the real end_address:
56 __ align(wordSize);
57 me->set_end_address(__ pc());
59 return me;
60 }
62 #ifdef ASSERT
63 static void verify_argslot(MacroAssembler* _masm, Register rax_argslot,
64 const char* error_message) {
65 // Verify that argslot lies within (rsp, rbp].
66 Label L_ok, L_bad;
67 __ cmpptr(rax_argslot, rbp);
68 __ jccb(Assembler::above, L_bad);
69 __ cmpptr(rsp, rax_argslot);
70 __ jccb(Assembler::below, L_ok);
71 __ bind(L_bad);
72 __ stop(error_message);
73 __ bind(L_ok);
74 }
75 #endif
78 // Code generation
79 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
80 // rbx: methodOop
81 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots])
82 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
83 // rdx: garbage temp, blown away
85 Register rbx_method = rbx;
86 Register rcx_recv = rcx;
87 Register rax_mtype = rax;
88 Register rdx_temp = rdx;
90 // emit WrongMethodType path first, to enable jccb back-branch from main path
91 Label wrong_method_type;
92 __ bind(wrong_method_type);
93 __ push(rax_mtype); // required mtype
94 __ push(rcx_recv); // bad mh (1st stacked argument)
95 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
97 // here's where control starts out:
98 __ align(CodeEntryAlignment);
99 address entry_point = __ pc();
101 // fetch the MethodType from the method handle into rax (the 'check' register)
102 {
103 Register tem = rbx_method;
104 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
105 __ movptr(rax_mtype, Address(tem, *pchase));
106 tem = rax_mtype; // in case there is another indirection
107 }
108 }
109 Register rbx_temp = rbx_method; // done with incoming methodOop
111 // given the MethodType, find out where the MH argument is buried
112 __ movptr(rdx_temp, Address(rax_mtype,
113 __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rbx_temp)));
114 __ movl(rdx_temp, Address(rdx_temp,
115 __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rbx_temp)));
116 __ movptr(rcx_recv, __ argument_address(rdx_temp));
118 __ check_method_handle_type(rax_mtype, rcx_recv, rdx_temp, wrong_method_type);
119 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
121 return entry_point;
122 }
124 // Helper to insert argument slots into the stack.
125 // arg_slots must be a multiple of stack_move_unit() and <= 0
126 void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
127 RegisterOrConstant arg_slots,
128 int arg_mask,
129 Register rax_argslot,
130 Register rbx_temp, Register rdx_temp) {
131 assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
132 (!arg_slots.is_register() ? rsp : arg_slots.as_register()));
134 #ifdef ASSERT
135 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame");
136 if (arg_slots.is_register()) {
137 Label L_ok, L_bad;
138 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD);
139 __ jccb(Assembler::greater, L_bad);
140 __ testl(arg_slots.as_register(), -stack_move_unit() - 1);
141 __ jccb(Assembler::zero, L_ok);
142 __ bind(L_bad);
143 __ stop("assert arg_slots <= 0 and clear low bits");
144 __ bind(L_ok);
145 } else {
146 assert(arg_slots.as_constant() <= 0, "");
147 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
148 }
149 #endif //ASSERT
151 #ifdef _LP64
152 if (arg_slots.is_register()) {
153 // clean high bits of stack motion register (was loaded as an int)
154 __ movslq(arg_slots.as_register(), arg_slots.as_register());
155 }
156 #endif
158 // Make space on the stack for the inserted argument(s).
159 // Then pull down everything shallower than rax_argslot.
160 // The stacked return address gets pulled down with everything else.
161 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code:
162 // rsp -= size;
163 // for (rdx = rsp + size; rdx < argslot; rdx++)
164 // rdx[-size] = rdx[0]
165 // argslot -= size;
166 __ mov(rdx_temp, rsp); // source pointer for copy
167 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr));
168 {
169 Label loop;
170 __ bind(loop);
171 // pull one word down each time through the loop
172 __ movptr(rbx_temp, Address(rdx_temp, 0));
173 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp);
174 __ addptr(rdx_temp, wordSize);
175 __ cmpptr(rdx_temp, rax_argslot);
176 __ jccb(Assembler::less, loop);
177 }
179 // Now move the argslot down, to point to the opened-up space.
180 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr));
182 if (TaggedStackInterpreter && arg_mask != _INSERT_NO_MASK) {
183 // The caller has specified a bitmask of tags to put into the opened space.
184 // This only works when the arg_slots value is an assembly-time constant.
185 int constant_arg_slots = arg_slots.as_constant() / stack_move_unit();
186 int tag_offset = Interpreter::tag_offset_in_bytes() - Interpreter::value_offset_in_bytes();
187 for (int slot = 0; slot < constant_arg_slots; slot++) {
188 BasicType slot_type = ((arg_mask & (1 << slot)) == 0 ? T_OBJECT : T_INT);
189 int slot_offset = Interpreter::stackElementSize() * slot;
190 Address tag_addr(rax_argslot, slot_offset + tag_offset);
191 __ movptr(tag_addr, frame::tag_for_basic_type(slot_type));
192 }
193 // Note that the new argument slots are tagged properly but contain
194 // garbage at this point. The value portions must be initialized
195 // by the caller. (Especially references!)
196 }
197 }
199 // Helper to remove argument slots from the stack.
200 // arg_slots must be a multiple of stack_move_unit() and >= 0
201 void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
202 RegisterOrConstant arg_slots,
203 Register rax_argslot,
204 Register rbx_temp, Register rdx_temp) {
205 assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
206 (!arg_slots.is_register() ? rsp : arg_slots.as_register()));
208 #ifdef ASSERT
209 {
210 // Verify that [argslot..argslot+size) lies within (rsp, rbp).
211 Label L_ok, L_bad;
212 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr));
213 __ cmpptr(rbx_temp, rbp);
214 __ jccb(Assembler::above, L_bad);
215 __ cmpptr(rsp, rax_argslot);
216 __ jccb(Assembler::below, L_ok);
217 __ bind(L_bad);
218 __ stop("deleted argument(s) must fall within current frame");
219 __ bind(L_ok);
220 }
221 if (arg_slots.is_register()) {
222 Label L_ok, L_bad;
223 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD);
224 __ jccb(Assembler::less, L_bad);
225 __ testl(arg_slots.as_register(), -stack_move_unit() - 1);
226 __ jccb(Assembler::zero, L_ok);
227 __ bind(L_bad);
228 __ stop("assert arg_slots >= 0 and clear low bits");
229 __ bind(L_ok);
230 } else {
231 assert(arg_slots.as_constant() >= 0, "");
232 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
233 }
234 #endif //ASSERT
236 #ifdef _LP64
237 if (false) { // not needed, since register is positive
238 // clean high bits of stack motion register (was loaded as an int)
239 if (arg_slots.is_register())
240 __ movslq(arg_slots.as_register(), arg_slots.as_register());
241 }
242 #endif
244 // Pull up everything shallower than rax_argslot.
245 // Then remove the excess space on the stack.
246 // The stacked return address gets pulled up with everything else.
247 // That is, copy [rsp, argslot) upward by size words. In pseudo-code:
248 // for (rdx = argslot-1; rdx >= rsp; --rdx)
249 // rdx[size] = rdx[0]
250 // argslot += size;
251 // rsp += size;
252 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy
253 {
254 Label loop;
255 __ bind(loop);
256 // pull one word up each time through the loop
257 __ movptr(rbx_temp, Address(rdx_temp, 0));
258 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp);
259 __ addptr(rdx_temp, -wordSize);
260 __ cmpptr(rdx_temp, rsp);
261 __ jccb(Assembler::greaterEqual, loop);
262 }
264 // Now move the argslot up, to point to the just-copied block.
265 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr));
266 // And adjust the argslot address to point at the deletion point.
267 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr));
268 }
270 #ifndef PRODUCT
271 extern "C" void print_method_handle(oop mh);
272 void trace_method_handle_stub(const char* adaptername,
273 oop mh,
274 intptr_t* entry_sp,
275 intptr_t* saved_sp,
276 intptr_t* saved_bp) {
277 // called as a leaf from native code: do not block the JVM!
278 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
279 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
280 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
281 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
282 if (last_sp != saved_sp)
283 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
284 if (Verbose) print_method_handle(mh);
285 }
286 #endif //PRODUCT
288 // Generate an "entry" field for a method handle.
289 // This determines how the method handle will respond to calls.
290 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
291 // Here is the register state during an interpreted call,
292 // as set up by generate_method_handle_interpreter_entry():
293 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused)
294 // - rcx: receiver method handle
295 // - rax: method handle type (only used by the check_mtype entry point)
296 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
297 // - rdx: garbage temp, can blow away
299 Register rcx_recv = rcx;
300 Register rax_argslot = rax;
301 Register rbx_temp = rbx;
302 Register rdx_temp = rdx;
304 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls)
305 // and gen_c2i_adapter (from compiled calls):
306 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi);
308 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
310 // some handy addresses
311 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() );
313 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() );
314 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() );
316 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() );
317 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() );
319 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() );
320 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() );
321 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() );
322 Address vmarg; // __ argument_address(vmargslot)
324 int tag_offset = -1;
325 if (TaggedStackInterpreter) {
326 tag_offset = Interpreter::tag_offset_in_bytes() - Interpreter::value_offset_in_bytes();
327 assert(tag_offset = wordSize, "stack grows as expected");
328 }
330 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
332 if (have_entry(ek)) {
333 __ nop(); // empty stubs make SG sick
334 return;
335 }
337 address interp_entry = __ pc();
338 if (UseCompressedOops) __ unimplemented("UseCompressedOops");
340 #ifndef PRODUCT
341 if (TraceMethodHandles) {
342 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi);
343 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp
344 // arguments:
345 __ push(rbp); // interpreter frame pointer
346 __ push(rsi); // saved_sp
347 __ push(rax); // entry_sp
348 __ push(rcx); // mh
349 __ push(rcx);
350 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek));
351 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5);
352 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax);
353 }
354 #endif //PRODUCT
356 switch ((int) ek) {
357 case _raise_exception:
358 {
359 // Not a real MH entry, but rather shared code for raising an exception.
360 // Extra local arguments are pushed on stack, as required type at TOS+8,
361 // failing object (or NULL) at TOS+4, failing bytecode type at TOS.
362 // Beyond those local arguments are the PC, of course.
363 Register rdx_code = rdx_temp;
364 Register rcx_fail = rcx_recv;
365 Register rax_want = rax_argslot;
366 Register rdi_pc = rdi;
367 __ pop(rdx_code); // TOS+0
368 __ pop(rcx_fail); // TOS+4
369 __ pop(rax_want); // TOS+8
370 __ pop(rdi_pc); // caller PC
372 __ mov(rsp, rsi); // cut the stack back to where the caller started
374 // Repush the arguments as if coming from the interpreter.
375 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_INT));
376 __ push(rdx_code);
377 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_OBJECT));
378 __ push(rcx_fail);
379 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_OBJECT));
380 __ push(rax_want);
382 Register rbx_method = rbx_temp;
383 Label no_method;
384 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
385 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method));
386 __ testptr(rbx_method, rbx_method);
387 __ jccb(Assembler::zero, no_method);
388 int jobject_oop_offset = 0;
389 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject
390 __ testptr(rbx_method, rbx_method);
391 __ jccb(Assembler::zero, no_method);
392 __ verify_oop(rbx_method);
393 __ push(rdi_pc); // and restore caller PC
394 __ jmp(rbx_method_fie);
396 // If we get here, the Java runtime did not do its job of creating the exception.
397 // Do something that is at least causes a valid throw from the interpreter.
398 __ bind(no_method);
399 __ pop(rax_want);
400 if (TaggedStackInterpreter) __ pop(rcx_fail);
401 __ pop(rcx_fail);
402 __ push(rax_want);
403 __ push(rcx_fail);
404 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
405 }
406 break;
408 case _invokestatic_mh:
409 case _invokespecial_mh:
410 {
411 Register rbx_method = rbx_temp;
412 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop
413 __ verify_oop(rbx_method);
414 // same as TemplateTable::invokestatic or invokespecial,
415 // minus the CP setup and profiling:
416 if (ek == _invokespecial_mh) {
417 // Must load & check the first argument before entering the target method.
418 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
419 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
420 __ null_check(rcx_recv);
421 __ verify_oop(rcx_recv);
422 }
423 __ jmp(rbx_method_fie);
424 }
425 break;
427 case _invokevirtual_mh:
428 {
429 // same as TemplateTable::invokevirtual,
430 // minus the CP setup and profiling:
432 // pick out the vtable index and receiver offset from the MH,
433 // and then we can discard it:
434 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
435 Register rbx_index = rbx_temp;
436 __ movl(rbx_index, rcx_dmh_vmindex);
437 // Note: The verifier allows us to ignore rcx_mh_vmtarget.
438 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
439 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
441 // get receiver klass
442 Register rax_klass = rax_argslot;
443 __ load_klass(rax_klass, rcx_recv);
444 __ verify_oop(rax_klass);
446 // get target methodOop & entry point
447 const int base = instanceKlass::vtable_start_offset() * wordSize;
448 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
449 Address vtable_entry_addr(rax_klass,
450 rbx_index, Address::times_ptr,
451 base + vtableEntry::method_offset_in_bytes());
452 Register rbx_method = rbx_temp;
453 __ movptr(rbx_method, vtable_entry_addr);
455 __ verify_oop(rbx_method);
456 __ jmp(rbx_method_fie);
457 }
458 break;
460 case _invokeinterface_mh:
461 {
462 // same as TemplateTable::invokeinterface,
463 // minus the CP setup and profiling:
465 // pick out the interface and itable index from the MH.
466 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
467 Register rdx_intf = rdx_temp;
468 Register rbx_index = rbx_temp;
469 __ movptr(rdx_intf, rcx_mh_vmtarget);
470 __ movl(rbx_index, rcx_dmh_vmindex);
471 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
472 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
474 // get receiver klass
475 Register rax_klass = rax_argslot;
476 __ load_klass(rax_klass, rcx_recv);
477 __ verify_oop(rax_klass);
479 Register rdi_temp = rdi;
480 Register rbx_method = rbx_index;
482 // get interface klass
483 Label no_such_interface;
484 __ verify_oop(rdx_intf);
485 __ lookup_interface_method(rax_klass, rdx_intf,
486 // note: next two args must be the same:
487 rbx_index, rbx_method,
488 rdi_temp,
489 no_such_interface);
491 __ verify_oop(rbx_method);
492 __ jmp(rbx_method_fie);
493 __ hlt();
495 __ bind(no_such_interface);
496 // Throw an exception.
497 // For historical reasons, it will be IncompatibleClassChangeError.
498 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface
499 __ push(rcx_recv); // bad receiver
500 __ push((int)Bytecodes::_invokeinterface); // who is complaining?
501 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
502 }
503 break;
505 case _bound_ref_mh:
506 case _bound_int_mh:
507 case _bound_long_mh:
508 case _bound_ref_direct_mh:
509 case _bound_int_direct_mh:
510 case _bound_long_direct_mh:
511 {
512 bool direct_to_method = (ek >= _bound_ref_direct_mh);
513 BasicType arg_type = T_ILLEGAL;
514 if (ek == _bound_long_mh || ek == _bound_long_direct_mh) {
515 arg_type = T_LONG;
516 } else if (ek == _bound_int_mh || ek == _bound_int_direct_mh) {
517 arg_type = T_INT;
518 } else {
519 assert(ek == _bound_ref_mh || ek == _bound_ref_direct_mh, "must be ref");
520 arg_type = T_OBJECT;
521 }
522 int arg_slots = type2size[arg_type];
523 int arg_mask = (arg_type == T_OBJECT ? _INSERT_REF_MASK :
524 arg_slots == 1 ? _INSERT_INT_MASK : _INSERT_LONG_MASK);
526 // make room for the new argument:
527 __ movl(rax_argslot, rcx_bmh_vmargslot);
528 __ lea(rax_argslot, __ argument_address(rax_argslot));
529 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask,
530 rax_argslot, rbx_temp, rdx_temp);
532 // store bound argument into the new stack slot:
533 __ movptr(rbx_temp, rcx_bmh_argument);
534 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type));
535 if (arg_type == T_OBJECT) {
536 __ movptr(Address(rax_argslot, 0), rbx_temp);
537 } else {
538 __ load_sized_value(rdx_temp, prim_value_addr,
539 type2aelembytes(arg_type), is_signed_subword_type(arg_type));
540 __ movptr(Address(rax_argslot, 0), rdx_temp);
541 #ifndef _LP64
542 if (arg_slots == 2) {
543 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize));
544 __ movl(Address(rax_argslot, Interpreter::stackElementSize()), rdx_temp);
545 }
546 #endif //_LP64
547 }
549 if (direct_to_method) {
550 Register rbx_method = rbx_temp;
551 __ movptr(rbx_method, rcx_mh_vmtarget);
552 __ verify_oop(rbx_method);
553 __ jmp(rbx_method_fie);
554 } else {
555 __ movptr(rcx_recv, rcx_mh_vmtarget);
556 __ verify_oop(rcx_recv);
557 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
558 }
559 }
560 break;
562 case _adapter_retype_only:
563 case _adapter_retype_raw:
564 // immediately jump to the next MH layer:
565 __ movptr(rcx_recv, rcx_mh_vmtarget);
566 __ verify_oop(rcx_recv);
567 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
568 // This is OK when all parameter types widen.
569 // It is also OK when a return type narrows.
570 break;
572 case _adapter_check_cast:
573 {
574 // temps:
575 Register rbx_klass = rbx_temp; // interesting AMH data
577 // check a reference argument before jumping to the next layer of MH:
578 __ movl(rax_argslot, rcx_amh_vmargslot);
579 vmarg = __ argument_address(rax_argslot);
581 // What class are we casting to?
582 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object!
583 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes()));
585 Label done;
586 __ movptr(rdx_temp, vmarg);
587 __ testl(rdx_temp, rdx_temp);
588 __ jccb(Assembler::zero, done); // no cast if null
589 __ load_klass(rdx_temp, rdx_temp);
591 // live at this point:
592 // - rbx_klass: klass required by the target method
593 // - rdx_temp: argument klass to test
594 // - rcx_recv: adapter method handle
595 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done);
597 // If we get here, the type check failed!
598 // Call the wrong_method_type stub, passing the failing argument type in rax.
599 Register rax_mtype = rax_argslot;
600 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field
601 __ movptr(rdx_temp, vmarg);
603 __ pushptr(rcx_amh_argument); // required class
604 __ push(rdx_temp); // bad object
605 __ push((int)Bytecodes::_checkcast); // who is complaining?
606 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
608 __ bind(done);
609 // get the new MH:
610 __ movptr(rcx_recv, rcx_mh_vmtarget);
611 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
612 }
613 break;
615 case _adapter_prim_to_prim:
616 case _adapter_ref_to_prim:
617 // handled completely by optimized cases
618 __ stop("init_AdapterMethodHandle should not issue this");
619 break;
621 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
622 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
623 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
624 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
625 {
626 // perform an in-place conversion to int or an int subword
627 __ movl(rax_argslot, rcx_amh_vmargslot);
628 vmarg = __ argument_address(rax_argslot);
630 switch (ek) {
631 case _adapter_opt_i2i:
632 __ movl(rdx_temp, vmarg);
633 break;
634 case _adapter_opt_l2i:
635 {
636 // just delete the extra slot; on a little-endian machine we keep the first
637 __ lea(rax_argslot, __ argument_address(rax_argslot, 1));
638 remove_arg_slots(_masm, -stack_move_unit(),
639 rax_argslot, rbx_temp, rdx_temp);
640 vmarg = Address(rax_argslot, -Interpreter::stackElementSize());
641 __ movl(rdx_temp, vmarg);
642 }
643 break;
644 case _adapter_opt_unboxi:
645 {
646 // Load the value up from the heap.
647 __ movptr(rdx_temp, vmarg);
648 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
649 #ifdef ASSERT
650 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
651 if (is_subword_type(BasicType(bt)))
652 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
653 }
654 #endif
655 __ null_check(rdx_temp, value_offset);
656 __ movl(rdx_temp, Address(rdx_temp, value_offset));
657 // We load this as a word. Because we are little-endian,
658 // the low bits will be correct, but the high bits may need cleaning.
659 // The vminfo will guide us to clean those bits.
660 }
661 break;
662 default:
663 assert(false, "");
664 }
665 goto finish_int_conversion;
666 }
668 finish_int_conversion:
669 {
670 Register rbx_vminfo = rbx_temp;
671 __ movl(rbx_vminfo, rcx_amh_conversion);
672 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
674 // get the new MH:
675 __ movptr(rcx_recv, rcx_mh_vmtarget);
676 // (now we are done with the old MH)
678 // original 32-bit vmdata word must be of this form:
679 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
680 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts
681 __ shll(rdx_temp /*, rcx*/);
682 Label zero_extend, done;
683 __ testl(rcx, CONV_VMINFO_SIGN_FLAG);
684 __ jccb(Assembler::zero, zero_extend);
686 // this path is taken for int->byte, int->short
687 __ sarl(rdx_temp /*, rcx*/);
688 __ jmpb(done);
690 __ bind(zero_extend);
691 // this is taken for int->char
692 __ shrl(rdx_temp /*, rcx*/);
694 __ bind(done);
695 __ movl(vmarg, rdx_temp);
696 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv
698 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
699 }
700 break;
702 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
703 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
704 {
705 // perform an in-place int-to-long or ref-to-long conversion
706 __ movl(rax_argslot, rcx_amh_vmargslot);
708 // on a little-endian machine we keep the first slot and add another after
709 __ lea(rax_argslot, __ argument_address(rax_argslot, 1));
710 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK,
711 rax_argslot, rbx_temp, rdx_temp);
712 Address vmarg1(rax_argslot, -Interpreter::stackElementSize());
713 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize());
715 switch (ek) {
716 case _adapter_opt_i2l:
717 {
718 __ movl(rdx_temp, vmarg1);
719 __ sarl(rdx_temp, 31); // __ extend_sign()
720 __ movl(vmarg2, rdx_temp); // store second word
721 }
722 break;
723 case _adapter_opt_unboxl:
724 {
725 // Load the value up from the heap.
726 __ movptr(rdx_temp, vmarg1);
727 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
728 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
729 __ null_check(rdx_temp, value_offset);
730 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt));
731 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt));
732 __ movl(vmarg1, rbx_temp);
733 __ movl(vmarg2, rdx_temp);
734 }
735 break;
736 default:
737 assert(false, "");
738 }
740 __ movptr(rcx_recv, rcx_mh_vmtarget);
741 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
742 }
743 break;
745 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
746 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
747 {
748 // perform an in-place floating primitive conversion
749 __ movl(rax_argslot, rcx_amh_vmargslot);
750 __ lea(rax_argslot, __ argument_address(rax_argslot, 1));
751 if (ek == _adapter_opt_f2d) {
752 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK,
753 rax_argslot, rbx_temp, rdx_temp);
754 }
755 Address vmarg(rax_argslot, -Interpreter::stackElementSize());
757 #ifdef _LP64
758 if (ek == _adapter_opt_f2d) {
759 __ movflt(xmm0, vmarg);
760 __ cvtss2sd(xmm0, xmm0);
761 __ movdbl(vmarg, xmm0);
762 } else {
763 __ movdbl(xmm0, vmarg);
764 __ cvtsd2ss(xmm0, xmm0);
765 __ movflt(vmarg, xmm0);
766 }
767 #else //_LP64
768 if (ek == _adapter_opt_f2d) {
769 __ fld_s(vmarg); // load float to ST0
770 __ fstp_s(vmarg); // store single
771 } else if (!TaggedStackInterpreter) {
772 __ fld_d(vmarg); // load double to ST0
773 __ fstp_s(vmarg); // store single
774 } else {
775 Address vmarg_tag = vmarg.plus_disp(tag_offset);
776 Address vmarg2 = vmarg.plus_disp(Interpreter::stackElementSize());
777 // vmarg2_tag does not participate in this code
778 Register rbx_tag = rbx_temp;
779 __ movl(rbx_tag, vmarg_tag); // preserve tag
780 __ movl(rdx_temp, vmarg2); // get second word of double
781 __ movl(vmarg_tag, rdx_temp); // align with first word
782 __ fld_d(vmarg); // load double to ST0
783 __ movl(vmarg_tag, rbx_tag); // restore tag
784 __ fstp_s(vmarg); // store single
785 }
786 #endif //_LP64
788 if (ek == _adapter_opt_d2f) {
789 remove_arg_slots(_masm, -stack_move_unit(),
790 rax_argslot, rbx_temp, rdx_temp);
791 }
793 __ movptr(rcx_recv, rcx_mh_vmtarget);
794 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
795 }
796 break;
798 case _adapter_prim_to_ref:
799 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
800 break;
802 case _adapter_swap_args:
803 case _adapter_rot_args:
804 // handled completely by optimized cases
805 __ stop("init_AdapterMethodHandle should not issue this");
806 break;
808 case _adapter_opt_swap_1:
809 case _adapter_opt_swap_2:
810 case _adapter_opt_rot_1_up:
811 case _adapter_opt_rot_1_down:
812 case _adapter_opt_rot_2_up:
813 case _adapter_opt_rot_2_down:
814 {
815 int rotate = 0, swap_slots = 0;
816 switch ((int)ek) {
817 case _adapter_opt_swap_1: swap_slots = 1; break;
818 case _adapter_opt_swap_2: swap_slots = 2; break;
819 case _adapter_opt_rot_1_up: swap_slots = 1; rotate++; break;
820 case _adapter_opt_rot_1_down: swap_slots = 1; rotate--; break;
821 case _adapter_opt_rot_2_up: swap_slots = 2; rotate++; break;
822 case _adapter_opt_rot_2_down: swap_slots = 2; rotate--; break;
823 default: assert(false, "");
824 }
826 // the real size of the move must be doubled if TaggedStackInterpreter:
827 int swap_bytes = (int)( swap_slots * Interpreter::stackElementWords() * wordSize );
829 // 'argslot' is the position of the first argument to swap
830 __ movl(rax_argslot, rcx_amh_vmargslot);
831 __ lea(rax_argslot, __ argument_address(rax_argslot));
833 // 'vminfo' is the second
834 Register rbx_destslot = rbx_temp;
835 __ movl(rbx_destslot, rcx_amh_conversion);
836 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
837 __ andl(rbx_destslot, CONV_VMINFO_MASK);
838 __ lea(rbx_destslot, __ argument_address(rbx_destslot));
839 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame"));
841 if (!rotate) {
842 for (int i = 0; i < swap_bytes; i += wordSize) {
843 __ movptr(rdx_temp, Address(rax_argslot , i));
844 __ push(rdx_temp);
845 __ movptr(rdx_temp, Address(rbx_destslot, i));
846 __ movptr(Address(rax_argslot, i), rdx_temp);
847 __ pop(rdx_temp);
848 __ movptr(Address(rbx_destslot, i), rdx_temp);
849 }
850 } else {
851 // push the first chunk, which is going to get overwritten
852 for (int i = swap_bytes; (i -= wordSize) >= 0; ) {
853 __ movptr(rdx_temp, Address(rax_argslot, i));
854 __ push(rdx_temp);
855 }
857 if (rotate > 0) {
858 // rotate upward
859 __ subptr(rax_argslot, swap_bytes);
860 #ifdef ASSERT
861 {
862 // Verify that argslot > destslot, by at least swap_bytes.
863 Label L_ok;
864 __ cmpptr(rax_argslot, rbx_destslot);
865 __ jccb(Assembler::aboveEqual, L_ok);
866 __ stop("source must be above destination (upward rotation)");
867 __ bind(L_ok);
868 }
869 #endif
870 // work argslot down to destslot, copying contiguous data upwards
871 // pseudo-code:
872 // rax = src_addr - swap_bytes
873 // rbx = dest_addr
874 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--;
875 Label loop;
876 __ bind(loop);
877 __ movptr(rdx_temp, Address(rax_argslot, 0));
878 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp);
879 __ addptr(rax_argslot, -wordSize);
880 __ cmpptr(rax_argslot, rbx_destslot);
881 __ jccb(Assembler::aboveEqual, loop);
882 } else {
883 __ addptr(rax_argslot, swap_bytes);
884 #ifdef ASSERT
885 {
886 // Verify that argslot < destslot, by at least swap_bytes.
887 Label L_ok;
888 __ cmpptr(rax_argslot, rbx_destslot);
889 __ jccb(Assembler::belowEqual, L_ok);
890 __ stop("source must be below destination (downward rotation)");
891 __ bind(L_ok);
892 }
893 #endif
894 // work argslot up to destslot, copying contiguous data downwards
895 // pseudo-code:
896 // rax = src_addr + swap_bytes
897 // rbx = dest_addr
898 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++;
899 Label loop;
900 __ bind(loop);
901 __ movptr(rdx_temp, Address(rax_argslot, 0));
902 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp);
903 __ addptr(rax_argslot, wordSize);
904 __ cmpptr(rax_argslot, rbx_destslot);
905 __ jccb(Assembler::belowEqual, loop);
906 }
908 // pop the original first chunk into the destination slot, now free
909 for (int i = 0; i < swap_bytes; i += wordSize) {
910 __ pop(rdx_temp);
911 __ movptr(Address(rbx_destslot, i), rdx_temp);
912 }
913 }
915 __ movptr(rcx_recv, rcx_mh_vmtarget);
916 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
917 }
918 break;
920 case _adapter_dup_args:
921 {
922 // 'argslot' is the position of the first argument to duplicate
923 __ movl(rax_argslot, rcx_amh_vmargslot);
924 __ lea(rax_argslot, __ argument_address(rax_argslot));
926 // 'stack_move' is negative number of words to duplicate
927 Register rdx_stack_move = rdx_temp;
928 __ movl(rdx_stack_move, rcx_amh_conversion);
929 __ sarl(rdx_stack_move, CONV_STACK_MOVE_SHIFT);
931 int argslot0_num = 0;
932 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num));
933 assert(argslot0.base() == rsp, "");
934 int pre_arg_size = argslot0.disp();
935 assert(pre_arg_size % wordSize == 0, "");
936 assert(pre_arg_size > 0, "must include PC");
938 // remember the old rsp+1 (argslot[0])
939 Register rbx_oldarg = rbx_temp;
940 __ lea(rbx_oldarg, argslot0);
942 // move rsp down to make room for dups
943 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr));
945 // compute the new rsp+1 (argslot[0])
946 Register rdx_newarg = rdx_temp;
947 __ lea(rdx_newarg, argslot0);
949 __ push(rdi); // need a temp
950 // (preceding push must be done after arg addresses are taken!)
952 // pull down the pre_arg_size data (PC)
953 for (int i = -pre_arg_size; i < 0; i += wordSize) {
954 __ movptr(rdi, Address(rbx_oldarg, i));
955 __ movptr(Address(rdx_newarg, i), rdi);
956 }
958 // copy from rax_argslot[0...] down to new_rsp[1...]
959 // pseudo-code:
960 // rbx = old_rsp+1
961 // rdx = new_rsp+1
962 // rax = argslot
963 // while (rdx < rbx) *rdx++ = *rax++
964 Label loop;
965 __ bind(loop);
966 __ movptr(rdi, Address(rax_argslot, 0));
967 __ movptr(Address(rdx_newarg, 0), rdi);
968 __ addptr(rax_argslot, wordSize);
969 __ addptr(rdx_newarg, wordSize);
970 __ cmpptr(rdx_newarg, rbx_oldarg);
971 __ jccb(Assembler::less, loop);
973 __ pop(rdi); // restore temp
975 __ movptr(rcx_recv, rcx_mh_vmtarget);
976 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
977 }
978 break;
980 case _adapter_drop_args:
981 {
982 // 'argslot' is the position of the first argument to nuke
983 __ movl(rax_argslot, rcx_amh_vmargslot);
984 __ lea(rax_argslot, __ argument_address(rax_argslot));
986 __ push(rdi); // need a temp
987 // (must do previous push after argslot address is taken)
989 // 'stack_move' is number of words to drop
990 Register rdi_stack_move = rdi;
991 __ movl(rdi_stack_move, rcx_amh_conversion);
992 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT);
993 remove_arg_slots(_masm, rdi_stack_move,
994 rax_argslot, rbx_temp, rdx_temp);
996 __ pop(rdi); // restore temp
998 __ movptr(rcx_recv, rcx_mh_vmtarget);
999 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
1000 }
1001 break;
1003 case _adapter_collect_args:
1004 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1005 break;
1007 case _adapter_spread_args:
1008 // handled completely by optimized cases
1009 __ stop("init_AdapterMethodHandle should not issue this");
1010 break;
1012 case _adapter_opt_spread_0:
1013 case _adapter_opt_spread_1:
1014 case _adapter_opt_spread_more:
1015 {
1016 // spread an array out into a group of arguments
1017 int length_constant = -1;
1018 switch (ek) {
1019 case _adapter_opt_spread_0: length_constant = 0; break;
1020 case _adapter_opt_spread_1: length_constant = 1; break;
1021 }
1023 // find the address of the array argument
1024 __ movl(rax_argslot, rcx_amh_vmargslot);
1025 __ lea(rax_argslot, __ argument_address(rax_argslot));
1027 // grab some temps
1028 { __ push(rsi); __ push(rdi); }
1029 // (preceding pushes must be done after argslot address is taken!)
1030 #define UNPUSH_RSI_RDI \
1031 { __ pop(rdi); __ pop(rsi); }
1033 // arx_argslot points both to the array and to the first output arg
1034 vmarg = Address(rax_argslot, 0);
1036 // Get the array value.
1037 Register rsi_array = rsi;
1038 Register rdx_array_klass = rdx_temp;
1039 BasicType elem_type = T_OBJECT;
1040 int length_offset = arrayOopDesc::length_offset_in_bytes();
1041 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type);
1042 __ movptr(rsi_array, vmarg);
1043 Label skip_array_check;
1044 if (length_constant == 0) {
1045 __ testptr(rsi_array, rsi_array);
1046 __ jcc(Assembler::zero, skip_array_check);
1047 }
1048 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes());
1049 __ load_klass(rdx_array_klass, rsi_array);
1051 // Check the array type.
1052 Register rbx_klass = rbx_temp;
1053 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object!
1054 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes()));
1056 Label ok_array_klass, bad_array_klass, bad_array_length;
1057 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass);
1058 // If we get here, the type check failed!
1059 __ jmp(bad_array_klass);
1060 __ bind(ok_array_klass);
1062 // Check length.
1063 if (length_constant >= 0) {
1064 __ cmpl(Address(rsi_array, length_offset), length_constant);
1065 } else {
1066 Register rbx_vminfo = rbx_temp;
1067 __ movl(rbx_vminfo, rcx_amh_conversion);
1068 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
1069 __ andl(rbx_vminfo, CONV_VMINFO_MASK);
1070 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset));
1071 }
1072 __ jcc(Assembler::notEqual, bad_array_length);
1074 Register rdx_argslot_limit = rdx_temp;
1076 // Array length checks out. Now insert any required stack slots.
1077 if (length_constant == -1) {
1078 // Form a pointer to the end of the affected region.
1079 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize()));
1080 // 'stack_move' is negative number of words to insert
1081 Register rdi_stack_move = rdi;
1082 __ movl(rdi_stack_move, rcx_amh_conversion);
1083 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT);
1084 Register rsi_temp = rsi_array; // spill this
1085 insert_arg_slots(_masm, rdi_stack_move, -1,
1086 rax_argslot, rbx_temp, rsi_temp);
1087 // reload the array (since rsi was killed)
1088 __ movptr(rsi_array, vmarg);
1089 } else if (length_constant > 1) {
1090 int arg_mask = 0;
1091 int new_slots = (length_constant - 1);
1092 for (int i = 0; i < new_slots; i++) {
1093 arg_mask <<= 1;
1094 arg_mask |= _INSERT_REF_MASK;
1095 }
1096 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask,
1097 rax_argslot, rbx_temp, rdx_temp);
1098 } else if (length_constant == 1) {
1099 // no stack resizing required
1100 } else if (length_constant == 0) {
1101 remove_arg_slots(_masm, -stack_move_unit(),
1102 rax_argslot, rbx_temp, rdx_temp);
1103 }
1105 // Copy from the array to the new slots.
1106 // Note: Stack change code preserves integrity of rax_argslot pointer.
1107 // So even after slot insertions, rax_argslot still points to first argument.
1108 if (length_constant == -1) {
1109 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into.
1110 Register rsi_source = rsi_array;
1111 __ lea(rsi_source, Address(rsi_array, elem0_offset));
1112 Label loop;
1113 __ bind(loop);
1114 __ movptr(rbx_temp, Address(rsi_source, 0));
1115 __ movptr(Address(rax_argslot, 0), rbx_temp);
1116 __ addptr(rsi_source, type2aelembytes(elem_type));
1117 if (TaggedStackInterpreter) {
1118 __ movptr(Address(rax_argslot, tag_offset),
1119 frame::tag_for_basic_type(elem_type));
1120 }
1121 __ addptr(rax_argslot, Interpreter::stackElementSize());
1122 __ cmpptr(rax_argslot, rdx_argslot_limit);
1123 __ jccb(Assembler::less, loop);
1124 } else if (length_constant == 0) {
1125 __ bind(skip_array_check);
1126 // nothing to copy
1127 } else {
1128 int elem_offset = elem0_offset;
1129 int slot_offset = 0;
1130 for (int index = 0; index < length_constant; index++) {
1131 __ movptr(rbx_temp, Address(rsi_array, elem_offset));
1132 __ movptr(Address(rax_argslot, slot_offset), rbx_temp);
1133 elem_offset += type2aelembytes(elem_type);
1134 if (TaggedStackInterpreter) {
1135 __ movptr(Address(rax_argslot, slot_offset + tag_offset),
1136 frame::tag_for_basic_type(elem_type));
1137 }
1138 slot_offset += Interpreter::stackElementSize();
1139 }
1140 }
1142 // Arguments are spread. Move to next method handle.
1143 UNPUSH_RSI_RDI;
1144 __ movptr(rcx_recv, rcx_mh_vmtarget);
1145 __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
1147 __ bind(bad_array_klass);
1148 UNPUSH_RSI_RDI;
1149 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type
1150 __ pushptr(vmarg); // bad array
1151 __ push((int)Bytecodes::_aaload); // who is complaining?
1152 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
1154 __ bind(bad_array_length);
1155 UNPUSH_RSI_RDI;
1156 __ push(rcx_recv); // AMH requiring a certain length
1157 __ pushptr(vmarg); // bad array
1158 __ push((int)Bytecodes::_arraylength); // who is complaining?
1159 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
1161 #undef UNPUSH_RSI_RDI
1162 }
1163 break;
1165 case _adapter_flyby:
1166 case _adapter_ricochet:
1167 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1168 break;
1170 default: ShouldNotReachHere();
1171 }
1172 __ hlt();
1174 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
1175 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1177 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
1178 }