1 /*
2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "prims/methodHandles.hpp"
29
30 #define __ _masm->
31
32 #ifdef PRODUCT
33 #define BLOCK_COMMENT(str) /* nothing */
34 #else
35 #define BLOCK_COMMENT(str) __ block_comment(str)
36 #endif
37
38 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
39
40 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
41 address interpreted_entry) {
42 // Just before the actual machine code entry point, allocate space
43 // for a MethodHandleEntry::Data record, so that we can manage everything
44 // from one base pointer.
45 __ align(wordSize);
46 address target = __ pc() + sizeof(Data);
47 while (__ pc() < target) {
48 __ nop();
49 __ align(wordSize);
50 }
51
52 MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
53 me->set_end_address(__ pc()); // set a temporary end_address
54 me->set_from_interpreted_entry(interpreted_entry);
55 me->set_type_checking_entry(NULL);
56
57 return (address) me;
58 }
59
60 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
61 address start_addr) {
62 MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
63 assert(me->end_address() == start_addr, "valid ME");
64
65 // Fill in the real end_address:
66 __ align(wordSize);
67 me->set_end_address(__ pc());
68
69 return me;
70 }
71
72
73 // Code generation
74 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
75 // I5_savedSP/O5_savedSP: sender SP (must preserve)
76 // G4 (Gargs): incoming argument list (must preserve)
77 // G5_method: invoke methodOop
78 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots])
79 // O0, O1, O2, O3, O4: garbage temps, blown away
80 Register O0_mtype = O0;
81 Register O1_scratch = O1;
82 Register O2_scratch = O2;
83 Register O3_scratch = O3;
84 Register O4_argslot = O4;
85 Register O4_argbase = O4;
86
87 // emit WrongMethodType path first, to enable back-branch from main path
88 Label wrong_method_type;
89 __ bind(wrong_method_type);
90 Label invoke_generic_slow_path;
91 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");;
92 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch);
93 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact);
94 __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path);
95 __ delayed()->nop();
96 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType
97 // mov(G3_method_handle, G3_method_handle); // already in this register
98 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
99 __ delayed()->nop();
100
101 // here's where control starts out:
102 __ align(CodeEntryAlignment);
103 address entry_point = __ pc();
104
105 // fetch the MethodType from the method handle
106 {
107 Register tem = G5_method;
108 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
109 __ ld_ptr(Address(tem, *pchase), O0_mtype);
110 tem = O0_mtype; // in case there is another indirection
111 }
112 }
113
114 // given the MethodType, find out where the MH argument is buried
115 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot);
116 __ ldsw( Address(O4_argslot, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot);
117 __ add(Gargs, __ argument_offset(O4_argslot, 1), O4_argbase);
118 // Note: argument_address uses its input as a scratch register!
119 __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle);
120
121 trace_method_handle(_masm, "invokeExact");
122
123 __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type);
124 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
125
126 // for invokeGeneric (only), apply argument and result conversions on the fly
127 __ bind(invoke_generic_slow_path);
128 #ifdef ASSERT
129 { Label L;
130 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch);
131 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric);
132 __ brx(Assembler::equal, false, Assembler::pt, L);
133 __ delayed()->nop();
134 __ stop("bad methodOop::intrinsic_id");
135 __ bind(L);
136 }
137 #endif //ASSERT
138
139 // make room on the stack for another pointer:
140 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, O4_argbase, O1_scratch, O2_scratch, O3_scratch);
141 // load up an adapter from the calling type (Java weaves this)
142 Register O2_form = O2_scratch;
143 Register O3_adapter = O3_scratch;
144 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O2_form);
145 __ load_heap_oop(Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter);
146 __ verify_oop(O3_adapter);
147 __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize));
148 // As a trusted first argument, pass the type being called, so the adapter knows
149 // the actual types of the arguments and return values.
150 // (Generic invokers are shared among form-families of method-type.)
151 __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize));
152 // FIXME: assert that O3_adapter is of the right method-type.
153 __ mov(O3_adapter, G3_method_handle);
154 trace_method_handle(_masm, "invokeGeneric");
155 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
156
157 return entry_point;
158 }
159
160
161 #ifdef ASSERT
162 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
163 // Verify that argslot lies within (Gargs, FP].
164 Label L_ok, L_bad;
165 BLOCK_COMMENT("{ verify_argslot");
166 #ifdef _LP64
167 __ add(FP, STACK_BIAS, temp_reg);
168 __ cmp(argslot_reg, temp_reg);
169 #else
170 __ cmp(argslot_reg, FP);
171 #endif
172 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad);
173 __ delayed()->nop();
174 __ cmp(Gargs, argslot_reg);
175 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
176 __ delayed()->nop();
177 __ bind(L_bad);
178 __ stop(error_message);
179 __ bind(L_ok);
180 BLOCK_COMMENT("} verify_argslot");
181 }
182 #endif
183
184
185 // Helper to insert argument slots into the stack.
186 // arg_slots must be a multiple of stack_move_unit() and <= 0
187 void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
188 RegisterOrConstant arg_slots,
189 int arg_mask,
190 Register argslot_reg,
191 Register temp_reg, Register temp2_reg, Register temp3_reg) {
192 assert(temp3_reg != noreg, "temp3 required");
193 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
194 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
195
196 #ifdef ASSERT
197 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame");
198 if (arg_slots.is_register()) {
199 Label L_ok, L_bad;
200 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
201 __ br(Assembler::greater, false, Assembler::pn, L_bad);
202 __ delayed()->nop();
203 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
204 __ br(Assembler::zero, false, Assembler::pt, L_ok);
205 __ delayed()->nop();
206 __ bind(L_bad);
207 __ stop("assert arg_slots <= 0 and clear low bits");
208 __ bind(L_ok);
209 } else {
210 assert(arg_slots.as_constant() <= 0, "");
211 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
212 }
213 #endif // ASSERT
214
215 #ifdef _LP64
216 if (arg_slots.is_register()) {
217 // Was arg_slots register loaded as signed int?
218 Label L_ok;
219 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg);
220 __ sra(temp_reg, BitsPerInt, temp_reg);
221 __ cmp(arg_slots.as_register(), temp_reg);
222 __ br(Assembler::equal, false, Assembler::pt, L_ok);
223 __ delayed()->nop();
224 __ stop("arg_slots register not loaded as signed int");
225 __ bind(L_ok);
226 }
227 #endif
228
229 // Make space on the stack for the inserted argument(s).
230 // Then pull down everything shallower than argslot_reg.
231 // The stacked return address gets pulled down with everything else.
232 // That is, copy [sp, argslot) downward by -size words. In pseudo-code:
233 // sp -= size;
234 // for (temp = sp + size; temp < argslot; temp++)
235 // temp[-size] = temp[0]
236 // argslot -= size;
237 BLOCK_COMMENT("insert_arg_slots {");
238 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
239
240 // Keep the stack pointer 2*wordSize aligned.
241 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
242 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
243 __ add(SP, masked_offset, SP);
244
245 __ mov(Gargs, temp_reg); // source pointer for copy
246 __ add(Gargs, offset, Gargs);
247
248 {
249 Label loop;
250 __ BIND(loop);
251 // pull one word down each time through the loop
252 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
253 __ st_ptr(temp2_reg, Address(temp_reg, offset));
254 __ add(temp_reg, wordSize, temp_reg);
255 __ cmp(temp_reg, argslot_reg);
256 __ brx(Assembler::less, false, Assembler::pt, loop);
257 __ delayed()->nop(); // FILLME
258 }
259
260 // Now move the argslot down, to point to the opened-up space.
261 __ add(argslot_reg, offset, argslot_reg);
262 BLOCK_COMMENT("} insert_arg_slots");
263 }
264
265
266 // Helper to remove argument slots from the stack.
267 // arg_slots must be a multiple of stack_move_unit() and >= 0
268 void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
269 RegisterOrConstant arg_slots,
270 Register argslot_reg,
271 Register temp_reg, Register temp2_reg, Register temp3_reg) {
272 assert(temp3_reg != noreg, "temp3 required");
273 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
274 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
275
276 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
277
278 #ifdef ASSERT
279 // Verify that [argslot..argslot+size) lies within (Gargs, FP).
280 __ add(argslot_reg, offset, temp2_reg);
281 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame");
282 if (arg_slots.is_register()) {
283 Label L_ok, L_bad;
284 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
285 __ br(Assembler::less, false, Assembler::pn, L_bad);
286 __ delayed()->nop();
287 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
288 __ br(Assembler::zero, false, Assembler::pt, L_ok);
289 __ delayed()->nop();
290 __ bind(L_bad);
291 __ stop("assert arg_slots >= 0 and clear low bits");
292 __ bind(L_ok);
293 } else {
294 assert(arg_slots.as_constant() >= 0, "");
295 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
296 }
297 #endif // ASSERT
298
299 BLOCK_COMMENT("remove_arg_slots {");
300 // Pull up everything shallower than argslot.
301 // Then remove the excess space on the stack.
302 // The stacked return address gets pulled up with everything else.
303 // That is, copy [sp, argslot) upward by size words. In pseudo-code:
304 // for (temp = argslot-1; temp >= sp; --temp)
305 // temp[size] = temp[0]
306 // argslot += size;
307 // sp += size;
308 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy
309 {
310 Label loop;
311 __ BIND(loop);
312 // pull one word up each time through the loop
313 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
314 __ st_ptr(temp2_reg, Address(temp_reg, offset));
315 __ sub(temp_reg, wordSize, temp_reg);
316 __ cmp(temp_reg, Gargs);
317 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop);
318 __ delayed()->nop(); // FILLME
319 }
320
321 // Now move the argslot up, to point to the just-copied block.
322 __ add(Gargs, offset, Gargs);
323 // And adjust the argslot address to point at the deletion point.
324 __ add(argslot_reg, offset, argslot_reg);
325
326 // Keep the stack pointer 2*wordSize aligned.
327 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
328 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
329 __ add(SP, masked_offset, SP);
330 BLOCK_COMMENT("} remove_arg_slots");
331 }
332
333
334 #ifndef PRODUCT
335 extern "C" void print_method_handle(oop mh);
336 void trace_method_handle_stub(const char* adaptername,
337 oopDesc* mh,
338 intptr_t* saved_sp) {
339 tty->print_cr("MH %s mh="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT, adaptername, (intptr_t) mh, saved_sp);
340 print_method_handle(mh);
341 }
342 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
343 if (!TraceMethodHandles) return;
344 BLOCK_COMMENT("trace_method_handle {");
345 // save: Gargs, O5_savedSP
346 __ save_frame(16);
347 __ set((intptr_t) adaptername, O0);
348 __ mov(G3_method_handle, O1);
349 __ mov(I5_savedSP, O2);
350 __ mov(G3_method_handle, L3);
351 __ mov(Gargs, L4);
352 __ mov(G5_method_type, L5);
353 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
354
355 __ mov(L3, G3_method_handle);
356 __ mov(L4, Gargs);
357 __ mov(L5, G5_method_type);
358 __ restore();
359 BLOCK_COMMENT("} trace_method_handle");
360 }
361 #endif // PRODUCT
362
363 // which conversion op types are implemented here?
364 int MethodHandles::adapter_conversion_ops_supported_mask() {
365 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY)
366 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW)
367 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST)
368 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM)
369 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM)
370 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS)
371 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS)
372 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS)
373 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS)
374 //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
375 );
376 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
377 }
378
379 //------------------------------------------------------------------------------
380 // MethodHandles::generate_method_handle_stub
381 //
382 // Generate an "entry" field for a method handle.
383 // This determines how the method handle will respond to calls.
384 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
385 // Here is the register state during an interpreted call,
386 // as set up by generate_method_handle_interpreter_entry():
387 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
388 // - G3: receiver method handle
389 // - O5_savedSP: sender SP (must preserve)
390
391 const Register O0_argslot = O0;
392 const Register O1_scratch = O1;
393 const Register O2_scratch = O2;
394 const Register O3_scratch = O3;
395 const Register G5_index = G5;
396
397 // Argument registers for _raise_exception.
398 const Register O0_code = O0;
399 const Register O1_actual = O1;
400 const Register O2_required = O2;
401
402 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
403
404 // Some handy addresses:
405 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
406 Address G5_method_fce( G5_method, in_bytes(methodOopDesc::from_compiled_offset()));
407
408 Address G3_mh_vmtarget( G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes());
409
410 Address G3_dmh_vmindex( G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes());
411
412 Address G3_bmh_vmargslot( G3_method_handle, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes());
413 Address G3_bmh_argument( G3_method_handle, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes());
414
415 Address G3_amh_vmargslot( G3_method_handle, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes());
416 Address G3_amh_argument ( G3_method_handle, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes());
417 Address G3_amh_conversion(G3_method_handle, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes());
418
419 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
420
421 if (have_entry(ek)) {
422 __ nop(); // empty stubs make SG sick
423 return;
424 }
425
426 address interp_entry = __ pc();
427
428 trace_method_handle(_masm, entry_name(ek));
429
430 switch ((int) ek) {
431 case _raise_exception:
432 {
433 // Not a real MH entry, but rather shared code for raising an
434 // exception. Since we use the compiled entry, arguments are
435 // expected in compiler argument registers.
436 assert(raise_exception_method(), "must be set");
437 assert(raise_exception_method()->from_compiled_entry(), "method must be linked");
438
439 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
440
441 Label L_no_method;
442 // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method
443 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
444 __ ld_ptr(Address(G5_method, 0), G5_method);
445 __ tst(G5_method);
446 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
447 __ delayed()->nop();
448
449 const int jobject_oop_offset = 0;
450 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
451 __ tst(G5_method);
452 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
453 __ delayed()->nop();
454
455 __ verify_oop(G5_method);
456 __ jump_indirect_to(G5_method_fce, O3_scratch); // jump to compiled entry
457 __ delayed()->nop();
458
459 // Do something that is at least causes a valid throw from the interpreter.
460 __ bind(L_no_method);
461 __ unimplemented("call throw_WrongMethodType_entry");
462 }
463 break;
464
465 case _invokestatic_mh:
466 case _invokespecial_mh:
467 {
468 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
469 __ verify_oop(G5_method);
470 // Same as TemplateTable::invokestatic or invokespecial,
471 // minus the CP setup and profiling:
472 if (ek == _invokespecial_mh) {
473 // Must load & check the first argument before entering the target method.
474 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
475 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
476 __ null_check(G3_method_handle);
477 __ verify_oop(G3_method_handle);
478 }
479 __ jump_indirect_to(G5_method_fie, O1_scratch);
480 __ delayed()->nop();
481 }
482 break;
483
484 case _invokevirtual_mh:
485 {
486 // Same as TemplateTable::invokevirtual,
487 // minus the CP setup and profiling:
488
489 // Pick out the vtable index and receiver offset from the MH,
490 // and then we can discard it:
491 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
492 __ ldsw(G3_dmh_vmindex, G5_index);
493 // Note: The verifier allows us to ignore G3_mh_vmtarget.
494 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
495 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
496
497 // Get receiver klass:
498 Register O0_klass = O0_argslot;
499 __ load_klass(G3_method_handle, O0_klass);
500 __ verify_oop(O0_klass);
501
502 // Get target methodOop & entry point:
503 const int base = instanceKlass::vtable_start_offset() * wordSize;
504 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
505
506 __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
507 __ add(O0_klass, G5_index, O0_klass);
508 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
509 __ ld_ptr(vtable_entry_addr, G5_method);
510
511 __ verify_oop(G5_method);
512 __ jump_indirect_to(G5_method_fie, O1_scratch);
513 __ delayed()->nop();
514 }
515 break;
516
517 case _invokeinterface_mh:
518 {
519 // Same as TemplateTable::invokeinterface,
520 // minus the CP setup and profiling:
521 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
522 Register O1_intf = O1_scratch;
523 __ load_heap_oop(G3_mh_vmtarget, O1_intf);
524 __ ldsw(G3_dmh_vmindex, G5_index);
525 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
526 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
527
528 // Get receiver klass:
529 Register O0_klass = O0_argslot;
530 __ load_klass(G3_method_handle, O0_klass);
531 __ verify_oop(O0_klass);
532
533 // Get interface:
534 Label no_such_interface;
535 __ verify_oop(O1_intf);
536 __ lookup_interface_method(O0_klass, O1_intf,
537 // Note: next two args must be the same:
538 G5_index, G5_method,
539 O2_scratch,
540 O3_scratch,
541 no_such_interface);
542
543 __ verify_oop(G5_method);
544 __ jump_indirect_to(G5_method_fie, O1_scratch);
545 __ delayed()->nop();
546
547 __ bind(no_such_interface);
548 // Throw an exception.
549 // For historical reasons, it will be IncompatibleClassChangeError.
550 __ unimplemented("not tested yet");
551 __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface
552 __ mov( O0_klass, O1_actual); // bad receiver
553 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch);
554 __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining?
555 }
556 break;
557
558 case _bound_ref_mh:
559 case _bound_int_mh:
560 case _bound_long_mh:
561 case _bound_ref_direct_mh:
562 case _bound_int_direct_mh:
563 case _bound_long_direct_mh:
564 {
565 const bool direct_to_method = (ek >= _bound_ref_direct_mh);
566 BasicType arg_type = T_ILLEGAL;
567 int arg_mask = _INSERT_NO_MASK;
568 int arg_slots = -1;
569 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
570
571 // Make room for the new argument:
572 __ ldsw(G3_bmh_vmargslot, O0_argslot);
573 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
574
575 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
576
577 // Store bound argument into the new stack slot:
578 __ load_heap_oop(G3_bmh_argument, O1_scratch);
579 if (arg_type == T_OBJECT) {
580 __ st_ptr(O1_scratch, Address(O0_argslot, 0));
581 } else {
582 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
583 const int arg_size = type2aelembytes(arg_type);
584 __ load_sized_value(prim_value_addr, O2_scratch, arg_size, is_signed_subword_type(arg_type));
585 __ store_sized_value(O2_scratch, Address(O0_argslot, 0), arg_size); // long store uses O2/O3 on !_LP64
586 }
587
588 if (direct_to_method) {
589 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
590 __ verify_oop(G5_method);
591 __ jump_indirect_to(G5_method_fie, O1_scratch);
592 __ delayed()->nop();
593 } else {
594 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
595 __ verify_oop(G3_method_handle);
596 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
597 }
598 }
599 break;
600
601 case _adapter_retype_only:
602 case _adapter_retype_raw:
603 // Immediately jump to the next MH layer:
604 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
605 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
606 // This is OK when all parameter types widen.
607 // It is also OK when a return type narrows.
608 break;
609
610 case _adapter_check_cast:
611 {
612 // Temps:
613 Register G5_klass = G5_index; // Interesting AMH data.
614
615 // Check a reference argument before jumping to the next layer of MH:
616 __ ldsw(G3_amh_vmargslot, O0_argslot);
617 Address vmarg = __ argument_address(O0_argslot);
618
619 // What class are we casting to?
620 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object!
621 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
622
623 Label done;
624 __ ld_ptr(vmarg, O1_scratch);
625 __ tst(O1_scratch);
626 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
627 __ delayed()->nop();
628 __ load_klass(O1_scratch, O1_scratch);
629
630 // Live at this point:
631 // - G5_klass : klass required by the target method
632 // - O0_argslot : argslot index in vmarg; may be required in the failing path
633 // - O1_scratch : argument klass to test
634 // - G3_method_handle: adapter method handle
635 __ check_klass_subtype(O1_scratch, G5_klass, O2_scratch, O3_scratch, done);
636
637 // If we get here, the type check failed!
638 __ load_heap_oop(G3_amh_argument, O2_required); // required class
639 __ ld_ptr( vmarg, O1_actual); // bad object
640 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch);
641 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining?
642
643 __ bind(done);
644 // Get the new MH:
645 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
646 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
647 }
648 break;
649
650 case _adapter_prim_to_prim:
651 case _adapter_ref_to_prim:
652 // Handled completely by optimized cases.
653 __ stop("init_AdapterMethodHandle should not issue this");
654 break;
655
656 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
657 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
658 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
659 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
660 {
661 // Perform an in-place conversion to int or an int subword.
662 __ ldsw(G3_amh_vmargslot, O0_argslot);
663 Address value;
664 Address vmarg = __ argument_address(O0_argslot);
665 bool value_left_justified = false;
666
667 switch (ek) {
668 case _adapter_opt_i2i:
669 value = vmarg;
670 break;
671 case _adapter_opt_l2i:
672 {
673 // just delete the extra slot
674 #ifdef _LP64
675 // In V9, longs are given 2 64-bit slots in the interpreter, but the
676 // data is passed in only 1 slot.
677 // Keep the second slot.
678 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot);
679 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
680 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value.
681 vmarg = Address(O0_argslot, Interpreter::stackElementSize);
682 #else
683 // Keep the first slot.
684 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
685 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
686 value = Address(O0_argslot, 0);
687 vmarg = value;
688 #endif
689 }
690 break;
691 case _adapter_opt_unboxi:
692 {
693 // Load the value up from the heap.
694 __ ld_ptr(vmarg, O1_scratch);
695 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
696 #ifdef ASSERT
697 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
698 if (is_subword_type(BasicType(bt)))
699 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
700 }
701 #endif
702 __ null_check(O1_scratch, value_offset);
703 value = Address(O1_scratch, value_offset);
704 #ifdef _BIG_ENDIAN
705 // Values stored in objects are packed.
706 value_left_justified = true;
707 #endif
708 }
709 break;
710 default:
711 ShouldNotReachHere();
712 }
713
714 // This check is required on _BIG_ENDIAN
715 Register G5_vminfo = G5_index;
716 __ ldsw(G3_amh_conversion, G5_vminfo);
717 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
718
719 // Original 32-bit vmdata word must be of this form:
720 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
721 __ lduw(value, O1_scratch);
722 if (!value_left_justified)
723 __ sll(O1_scratch, G5_vminfo, O1_scratch);
724 Label zero_extend, done;
725 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
726 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
727 __ delayed()->nop();
728
729 // this path is taken for int->byte, int->short
730 __ sra(O1_scratch, G5_vminfo, O1_scratch);
731 __ ba(false, done);
732 __ delayed()->nop();
733
734 __ bind(zero_extend);
735 // this is taken for int->char
736 __ srl(O1_scratch, G5_vminfo, O1_scratch);
737
738 __ bind(done);
739 __ st(O1_scratch, vmarg);
740
741 // Get the new MH:
742 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
743 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
744 }
745 break;
746
747 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
748 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
749 {
750 // Perform an in-place int-to-long or ref-to-long conversion.
751 __ ldsw(G3_amh_vmargslot, O0_argslot);
752
753 // On big-endian machine we duplicate the slot and store the MSW
754 // in the first slot.
755 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
756
757 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
758
759 Address arg_lsw(O0_argslot, 0);
760 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
761
762 switch (ek) {
763 case _adapter_opt_i2l:
764 {
765 #ifdef _LP64
766 __ ldsw(arg_lsw, O2_scratch); // Load LSW sign-extended
767 #else
768 __ ldsw(arg_lsw, O3_scratch); // Load LSW sign-extended
769 __ srlx(O3_scratch, BitsPerInt, O2_scratch); // Move MSW value to lower 32-bits for std
770 #endif
771 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
772 }
773 break;
774 case _adapter_opt_unboxl:
775 {
776 // Load the value up from the heap.
777 __ ld_ptr(arg_lsw, O1_scratch);
778 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
779 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
780 __ null_check(O1_scratch, value_offset);
781 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
782 __ st_long(O2_scratch, arg_msw);
783 }
784 break;
785 default:
786 ShouldNotReachHere();
787 }
788
789 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
790 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
791 }
792 break;
793
794 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
795 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
796 {
797 // perform an in-place floating primitive conversion
798 __ unimplemented(entry_name(ek));
799 }
800 break;
801
802 case _adapter_prim_to_ref:
803 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
804 break;
805
806 case _adapter_swap_args:
807 case _adapter_rot_args:
808 // handled completely by optimized cases
809 __ stop("init_AdapterMethodHandle should not issue this");
810 break;
811
812 case _adapter_opt_swap_1:
813 case _adapter_opt_swap_2:
814 case _adapter_opt_rot_1_up:
815 case _adapter_opt_rot_1_down:
816 case _adapter_opt_rot_2_up:
817 case _adapter_opt_rot_2_down:
818 {
819 int swap_bytes = 0, rotate = 0;
820 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
821
822 // 'argslot' is the position of the first argument to swap.
823 __ ldsw(G3_amh_vmargslot, O0_argslot);
824 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
825
826 // 'vminfo' is the second.
827 Register O1_destslot = O1_scratch;
828 __ ldsw(G3_amh_conversion, O1_destslot);
829 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
830 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
831 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
832
833 if (!rotate) {
834 for (int i = 0; i < swap_bytes; i += wordSize) {
835 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
836 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
837 __ st_ptr(O3_scratch, Address(O0_argslot, i));
838 __ st_ptr(O2_scratch, Address(O1_destslot, i));
839 }
840 } else {
841 // Save the first chunk, which is going to get overwritten.
842 switch (swap_bytes) {
843 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
844 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
845 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
846 default: ShouldNotReachHere();
847 }
848
849 if (rotate > 0) {
850 // Rorate upward.
851 __ sub(O0_argslot, swap_bytes, O0_argslot);
852 #if ASSERT
853 {
854 // Verify that argslot > destslot, by at least swap_bytes.
855 Label L_ok;
856 __ cmp(O0_argslot, O1_destslot);
857 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
858 __ delayed()->nop();
859 __ stop("source must be above destination (upward rotation)");
860 __ bind(L_ok);
861 }
862 #endif
863 // Work argslot down to destslot, copying contiguous data upwards.
864 // Pseudo-code:
865 // argslot = src_addr - swap_bytes
866 // destslot = dest_addr
867 // while (argslot >= destslot) {
868 // *(argslot + swap_bytes) = *(argslot + 0);
869 // argslot--;
870 // }
871 Label loop;
872 __ bind(loop);
873 __ ld_ptr(Address(O0_argslot, 0), G5_index);
874 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
875 __ sub(O0_argslot, wordSize, O0_argslot);
876 __ cmp(O0_argslot, O1_destslot);
877 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
878 __ delayed()->nop(); // FILLME
879 } else {
880 __ add(O0_argslot, swap_bytes, O0_argslot);
881 #if ASSERT
882 {
883 // Verify that argslot < destslot, by at least swap_bytes.
884 Label L_ok;
885 __ cmp(O0_argslot, O1_destslot);
886 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
887 __ delayed()->nop();
888 __ stop("source must be above destination (upward rotation)");
889 __ bind(L_ok);
890 }
891 #endif
892 // Work argslot up to destslot, copying contiguous data downwards.
893 // Pseudo-code:
894 // argslot = src_addr + swap_bytes
895 // destslot = dest_addr
896 // while (argslot >= destslot) {
897 // *(argslot - swap_bytes) = *(argslot + 0);
898 // argslot++;
899 // }
900 Label loop;
901 __ bind(loop);
902 __ ld_ptr(Address(O0_argslot, 0), G5_index);
903 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
904 __ add(O0_argslot, wordSize, O0_argslot);
905 __ cmp(O0_argslot, O1_destslot);
906 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
907 __ delayed()->nop(); // FILLME
908 }
909
910 // Store the original first chunk into the destination slot, now free.
911 switch (swap_bytes) {
912 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
913 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
914 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
915 default: ShouldNotReachHere();
916 }
917 }
918
919 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
920 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
921 }
922 break;
923
924 case _adapter_dup_args:
925 {
926 // 'argslot' is the position of the first argument to duplicate.
927 __ ldsw(G3_amh_vmargslot, O0_argslot);
928 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
929
930 // 'stack_move' is negative number of words to duplicate.
931 Register G5_stack_move = G5_index;
932 __ ldsw(G3_amh_conversion, G5_stack_move);
933 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
934
935 // Remember the old Gargs (argslot[0]).
936 Register O1_oldarg = O1_scratch;
937 __ mov(Gargs, O1_oldarg);
938
939 // Move Gargs down to make room for dups.
940 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
941 __ add(Gargs, G5_stack_move, Gargs);
942
943 // Compute the new Gargs (argslot[0]).
944 Register O2_newarg = O2_scratch;
945 __ mov(Gargs, O2_newarg);
946
947 // Copy from oldarg[0...] down to newarg[0...]
948 // Pseude-code:
949 // O1_oldarg = old-Gargs
950 // O2_newarg = new-Gargs
951 // O0_argslot = argslot
952 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
953 Label loop;
954 __ bind(loop);
955 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
956 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
957 __ add(O0_argslot, wordSize, O0_argslot);
958 __ add(O2_newarg, wordSize, O2_newarg);
959 __ cmp(O2_newarg, O1_oldarg);
960 __ brx(Assembler::less, false, Assembler::pt, loop);
961 __ delayed()->nop(); // FILLME
962
963 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
964 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
965 }
966 break;
967
968 case _adapter_drop_args:
969 {
970 // 'argslot' is the position of the first argument to nuke.
971 __ ldsw(G3_amh_vmargslot, O0_argslot);
972 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
973
974 // 'stack_move' is number of words to drop.
975 Register G5_stack_move = G5_index;
976 __ ldsw(G3_amh_conversion, G5_stack_move);
977 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
978
979 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
980
981 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
982 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
983 }
984 break;
985
986 case _adapter_collect_args:
987 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
988 break;
989
990 case _adapter_spread_args:
991 // Handled completely by optimized cases.
992 __ stop("init_AdapterMethodHandle should not issue this");
993 break;
994
995 case _adapter_opt_spread_0:
996 case _adapter_opt_spread_1:
997 case _adapter_opt_spread_more:
998 {
999 // spread an array out into a group of arguments
1000 __ unimplemented(entry_name(ek));
1001 }
1002 break;
1003
1004 case _adapter_flyby:
1005 case _adapter_ricochet:
1006 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1007 break;
1008
1009 default:
1010 ShouldNotReachHere();
1011 }
1012
1013 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
1014 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1015
1016 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
1017 }