Thu, 12 May 2011 10:29:02 -0700
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
Reviewed-by: kvn, coleenp
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 */
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "prims/methodHandles.hpp"
30 #define __ _masm->
32 #ifdef PRODUCT
33 #define BLOCK_COMMENT(str) /* nothing */
34 #else
35 #define BLOCK_COMMENT(str) __ block_comment(str)
36 #endif
38 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
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 }
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);
57 return (address) me;
58 }
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");
65 // Fill in the real end_address:
66 __ align(wordSize);
67 me->set_end_address(__ pc());
69 return me;
70 }
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;
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();
101 // here's where control starts out:
102 __ align(CodeEntryAlignment);
103 address entry_point = __ pc();
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 }
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);
121 trace_method_handle(_masm, "invokeExact");
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);
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
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 // deal with old JDK versions:
147 __ add( Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter);
148 __ cmp(O3_adapter, O2_form);
149 Label sorry_no_invoke_generic;
150 __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic);
151 __ delayed()->nop();
153 __ load_heap_oop(Address(O3_adapter, 0), O3_adapter);
154 __ tst(O3_adapter);
155 __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic);
156 __ delayed()->nop();
157 __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize));
158 // As a trusted first argument, pass the type being called, so the adapter knows
159 // the actual types of the arguments and return values.
160 // (Generic invokers are shared among form-families of method-type.)
161 __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize));
162 // FIXME: assert that O3_adapter is of the right method-type.
163 __ mov(O3_adapter, G3_method_handle);
164 trace_method_handle(_masm, "invokeGeneric");
165 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
167 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available!
168 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType
169 // mov(G3_method_handle, G3_method_handle); // already in this register
170 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
171 __ delayed()->nop();
173 return entry_point;
174 }
177 #ifdef ASSERT
178 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
179 // Verify that argslot lies within (Gargs, FP].
180 Label L_ok, L_bad;
181 BLOCK_COMMENT("{ verify_argslot");
182 #ifdef _LP64
183 __ add(FP, STACK_BIAS, temp_reg);
184 __ cmp(argslot_reg, temp_reg);
185 #else
186 __ cmp(argslot_reg, FP);
187 #endif
188 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad);
189 __ delayed()->nop();
190 __ cmp(Gargs, argslot_reg);
191 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
192 __ delayed()->nop();
193 __ bind(L_bad);
194 __ stop(error_message);
195 __ bind(L_ok);
196 BLOCK_COMMENT("} verify_argslot");
197 }
198 #endif
201 // Helper to insert argument slots into the stack.
202 // arg_slots must be a multiple of stack_move_unit() and <= 0
203 void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
204 RegisterOrConstant arg_slots,
205 int arg_mask,
206 Register argslot_reg,
207 Register temp_reg, Register temp2_reg, Register temp3_reg) {
208 assert(temp3_reg != noreg, "temp3 required");
209 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
210 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
212 #ifdef ASSERT
213 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame");
214 if (arg_slots.is_register()) {
215 Label L_ok, L_bad;
216 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
217 __ br(Assembler::greater, false, Assembler::pn, L_bad);
218 __ delayed()->nop();
219 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
220 __ br(Assembler::zero, false, Assembler::pt, L_ok);
221 __ delayed()->nop();
222 __ bind(L_bad);
223 __ stop("assert arg_slots <= 0 and clear low bits");
224 __ bind(L_ok);
225 } else {
226 assert(arg_slots.as_constant() <= 0, "");
227 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
228 }
229 #endif // ASSERT
231 #ifdef _LP64
232 if (arg_slots.is_register()) {
233 // Was arg_slots register loaded as signed int?
234 Label L_ok;
235 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg);
236 __ sra(temp_reg, BitsPerInt, temp_reg);
237 __ cmp(arg_slots.as_register(), temp_reg);
238 __ br(Assembler::equal, false, Assembler::pt, L_ok);
239 __ delayed()->nop();
240 __ stop("arg_slots register not loaded as signed int");
241 __ bind(L_ok);
242 }
243 #endif
245 // Make space on the stack for the inserted argument(s).
246 // Then pull down everything shallower than argslot_reg.
247 // The stacked return address gets pulled down with everything else.
248 // That is, copy [sp, argslot) downward by -size words. In pseudo-code:
249 // sp -= size;
250 // for (temp = sp + size; temp < argslot; temp++)
251 // temp[-size] = temp[0]
252 // argslot -= size;
253 BLOCK_COMMENT("insert_arg_slots {");
254 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
256 // Keep the stack pointer 2*wordSize aligned.
257 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
258 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
259 __ add(SP, masked_offset, SP);
261 __ mov(Gargs, temp_reg); // source pointer for copy
262 __ add(Gargs, offset, Gargs);
264 {
265 Label loop;
266 __ BIND(loop);
267 // pull one word down each time through the loop
268 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
269 __ st_ptr(temp2_reg, Address(temp_reg, offset));
270 __ add(temp_reg, wordSize, temp_reg);
271 __ cmp(temp_reg, argslot_reg);
272 __ brx(Assembler::less, false, Assembler::pt, loop);
273 __ delayed()->nop(); // FILLME
274 }
276 // Now move the argslot down, to point to the opened-up space.
277 __ add(argslot_reg, offset, argslot_reg);
278 BLOCK_COMMENT("} insert_arg_slots");
279 }
282 // Helper to remove argument slots from the stack.
283 // arg_slots must be a multiple of stack_move_unit() and >= 0
284 void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
285 RegisterOrConstant arg_slots,
286 Register argslot_reg,
287 Register temp_reg, Register temp2_reg, Register temp3_reg) {
288 assert(temp3_reg != noreg, "temp3 required");
289 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
290 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
292 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
294 #ifdef ASSERT
295 // Verify that [argslot..argslot+size) lies within (Gargs, FP).
296 __ add(argslot_reg, offset, temp2_reg);
297 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame");
298 if (arg_slots.is_register()) {
299 Label L_ok, L_bad;
300 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
301 __ br(Assembler::less, false, Assembler::pn, L_bad);
302 __ delayed()->nop();
303 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
304 __ br(Assembler::zero, false, Assembler::pt, L_ok);
305 __ delayed()->nop();
306 __ bind(L_bad);
307 __ stop("assert arg_slots >= 0 and clear low bits");
308 __ bind(L_ok);
309 } else {
310 assert(arg_slots.as_constant() >= 0, "");
311 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
312 }
313 #endif // ASSERT
315 BLOCK_COMMENT("remove_arg_slots {");
316 // Pull up everything shallower than argslot.
317 // Then remove the excess space on the stack.
318 // The stacked return address gets pulled up with everything else.
319 // That is, copy [sp, argslot) upward by size words. In pseudo-code:
320 // for (temp = argslot-1; temp >= sp; --temp)
321 // temp[size] = temp[0]
322 // argslot += size;
323 // sp += size;
324 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy
325 {
326 Label loop;
327 __ BIND(loop);
328 // pull one word up each time through the loop
329 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
330 __ st_ptr(temp2_reg, Address(temp_reg, offset));
331 __ sub(temp_reg, wordSize, temp_reg);
332 __ cmp(temp_reg, Gargs);
333 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop);
334 __ delayed()->nop(); // FILLME
335 }
337 // Now move the argslot up, to point to the just-copied block.
338 __ add(Gargs, offset, Gargs);
339 // And adjust the argslot address to point at the deletion point.
340 __ add(argslot_reg, offset, argslot_reg);
342 // Keep the stack pointer 2*wordSize aligned.
343 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
344 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
345 __ add(SP, masked_offset, SP);
346 BLOCK_COMMENT("} remove_arg_slots");
347 }
350 #ifndef PRODUCT
351 extern "C" void print_method_handle(oop mh);
352 void trace_method_handle_stub(const char* adaptername,
353 oopDesc* mh,
354 intptr_t* saved_sp) {
355 tty->print_cr("MH %s mh="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT, adaptername, (intptr_t) mh, saved_sp);
356 print_method_handle(mh);
357 }
358 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
359 if (!TraceMethodHandles) return;
360 BLOCK_COMMENT("trace_method_handle {");
361 // save: Gargs, O5_savedSP
362 __ save_frame(16);
363 __ set((intptr_t) adaptername, O0);
364 __ mov(G3_method_handle, O1);
365 __ mov(I5_savedSP, O2);
366 __ mov(G3_method_handle, L3);
367 __ mov(Gargs, L4);
368 __ mov(G5_method_type, L5);
369 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
371 __ mov(L3, G3_method_handle);
372 __ mov(L4, Gargs);
373 __ mov(L5, G5_method_type);
374 __ restore();
375 BLOCK_COMMENT("} trace_method_handle");
376 }
377 #endif // PRODUCT
379 // which conversion op types are implemented here?
380 int MethodHandles::adapter_conversion_ops_supported_mask() {
381 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY)
382 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW)
383 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST)
384 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM)
385 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM)
386 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS)
387 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS)
388 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS)
389 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS)
390 //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
391 );
392 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
393 }
395 //------------------------------------------------------------------------------
396 // MethodHandles::generate_method_handle_stub
397 //
398 // Generate an "entry" field for a method handle.
399 // This determines how the method handle will respond to calls.
400 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
401 // Here is the register state during an interpreted call,
402 // as set up by generate_method_handle_interpreter_entry():
403 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
404 // - G3: receiver method handle
405 // - O5_savedSP: sender SP (must preserve)
407 const Register O0_argslot = O0;
408 const Register O1_scratch = O1;
409 const Register O2_scratch = O2;
410 const Register O3_scratch = O3;
411 const Register G5_index = G5;
413 // Argument registers for _raise_exception.
414 const Register O0_code = O0;
415 const Register O1_actual = O1;
416 const Register O2_required = O2;
418 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
420 // Some handy addresses:
421 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
422 Address G5_method_fce( G5_method, in_bytes(methodOopDesc::from_compiled_offset()));
424 Address G3_mh_vmtarget( G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes());
426 Address G3_dmh_vmindex( G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes());
428 Address G3_bmh_vmargslot( G3_method_handle, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes());
429 Address G3_bmh_argument( G3_method_handle, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes());
431 Address G3_amh_vmargslot( G3_method_handle, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes());
432 Address G3_amh_argument ( G3_method_handle, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes());
433 Address G3_amh_conversion(G3_method_handle, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes());
435 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
437 if (have_entry(ek)) {
438 __ nop(); // empty stubs make SG sick
439 return;
440 }
442 address interp_entry = __ pc();
444 trace_method_handle(_masm, entry_name(ek));
446 switch ((int) ek) {
447 case _raise_exception:
448 {
449 // Not a real MH entry, but rather shared code for raising an
450 // exception. Since we use the compiled entry, arguments are
451 // expected in compiler argument registers.
452 assert(raise_exception_method(), "must be set");
453 assert(raise_exception_method()->from_compiled_entry(), "method must be linked");
455 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
457 Label L_no_method;
458 // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method
459 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
460 __ ld_ptr(Address(G5_method, 0), G5_method);
461 __ tst(G5_method);
462 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
463 __ delayed()->nop();
465 const int jobject_oop_offset = 0;
466 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
467 __ tst(G5_method);
468 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
469 __ delayed()->nop();
471 __ verify_oop(G5_method);
472 __ jump_indirect_to(G5_method_fce, O3_scratch); // jump to compiled entry
473 __ delayed()->nop();
475 // Do something that is at least causes a valid throw from the interpreter.
476 __ bind(L_no_method);
477 __ unimplemented("call throw_WrongMethodType_entry");
478 }
479 break;
481 case _invokestatic_mh:
482 case _invokespecial_mh:
483 {
484 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
485 __ verify_oop(G5_method);
486 // Same as TemplateTable::invokestatic or invokespecial,
487 // minus the CP setup and profiling:
488 if (ek == _invokespecial_mh) {
489 // Must load & check the first argument before entering the target method.
490 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
491 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
492 __ null_check(G3_method_handle);
493 __ verify_oop(G3_method_handle);
494 }
495 __ jump_indirect_to(G5_method_fie, O1_scratch);
496 __ delayed()->nop();
497 }
498 break;
500 case _invokevirtual_mh:
501 {
502 // Same as TemplateTable::invokevirtual,
503 // minus the CP setup and profiling:
505 // Pick out the vtable index and receiver offset from the MH,
506 // and then we can discard it:
507 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
508 __ ldsw(G3_dmh_vmindex, G5_index);
509 // Note: The verifier allows us to ignore G3_mh_vmtarget.
510 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
511 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
513 // Get receiver klass:
514 Register O0_klass = O0_argslot;
515 __ load_klass(G3_method_handle, O0_klass);
516 __ verify_oop(O0_klass);
518 // Get target methodOop & entry point:
519 const int base = instanceKlass::vtable_start_offset() * wordSize;
520 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
522 __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
523 __ add(O0_klass, G5_index, O0_klass);
524 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
525 __ ld_ptr(vtable_entry_addr, G5_method);
527 __ verify_oop(G5_method);
528 __ jump_indirect_to(G5_method_fie, O1_scratch);
529 __ delayed()->nop();
530 }
531 break;
533 case _invokeinterface_mh:
534 {
535 // Same as TemplateTable::invokeinterface,
536 // minus the CP setup and profiling:
537 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
538 Register O1_intf = O1_scratch;
539 __ load_heap_oop(G3_mh_vmtarget, O1_intf);
540 __ ldsw(G3_dmh_vmindex, G5_index);
541 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
542 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
544 // Get receiver klass:
545 Register O0_klass = O0_argslot;
546 __ load_klass(G3_method_handle, O0_klass);
547 __ verify_oop(O0_klass);
549 // Get interface:
550 Label no_such_interface;
551 __ verify_oop(O1_intf);
552 __ lookup_interface_method(O0_klass, O1_intf,
553 // Note: next two args must be the same:
554 G5_index, G5_method,
555 O2_scratch,
556 O3_scratch,
557 no_such_interface);
559 __ verify_oop(G5_method);
560 __ jump_indirect_to(G5_method_fie, O1_scratch);
561 __ delayed()->nop();
563 __ bind(no_such_interface);
564 // Throw an exception.
565 // For historical reasons, it will be IncompatibleClassChangeError.
566 __ unimplemented("not tested yet");
567 __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface
568 __ mov( O0_klass, O1_actual); // bad receiver
569 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch);
570 __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining?
571 }
572 break;
574 case _bound_ref_mh:
575 case _bound_int_mh:
576 case _bound_long_mh:
577 case _bound_ref_direct_mh:
578 case _bound_int_direct_mh:
579 case _bound_long_direct_mh:
580 {
581 const bool direct_to_method = (ek >= _bound_ref_direct_mh);
582 BasicType arg_type = T_ILLEGAL;
583 int arg_mask = _INSERT_NO_MASK;
584 int arg_slots = -1;
585 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
587 // Make room for the new argument:
588 __ ldsw(G3_bmh_vmargslot, O0_argslot);
589 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
591 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
593 // Store bound argument into the new stack slot:
594 __ load_heap_oop(G3_bmh_argument, O1_scratch);
595 if (arg_type == T_OBJECT) {
596 __ st_ptr(O1_scratch, Address(O0_argslot, 0));
597 } else {
598 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
599 const int arg_size = type2aelembytes(arg_type);
600 __ load_sized_value(prim_value_addr, O2_scratch, arg_size, is_signed_subword_type(arg_type));
601 __ store_sized_value(O2_scratch, Address(O0_argslot, 0), arg_size); // long store uses O2/O3 on !_LP64
602 }
604 if (direct_to_method) {
605 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
606 __ verify_oop(G5_method);
607 __ jump_indirect_to(G5_method_fie, O1_scratch);
608 __ delayed()->nop();
609 } else {
610 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
611 __ verify_oop(G3_method_handle);
612 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
613 }
614 }
615 break;
617 case _adapter_retype_only:
618 case _adapter_retype_raw:
619 // Immediately jump to the next MH layer:
620 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
621 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
622 // This is OK when all parameter types widen.
623 // It is also OK when a return type narrows.
624 break;
626 case _adapter_check_cast:
627 {
628 // Temps:
629 Register G5_klass = G5_index; // Interesting AMH data.
631 // Check a reference argument before jumping to the next layer of MH:
632 __ ldsw(G3_amh_vmargslot, O0_argslot);
633 Address vmarg = __ argument_address(O0_argslot);
635 // What class are we casting to?
636 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object!
637 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
639 Label done;
640 __ ld_ptr(vmarg, O1_scratch);
641 __ tst(O1_scratch);
642 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
643 __ delayed()->nop();
644 __ load_klass(O1_scratch, O1_scratch);
646 // Live at this point:
647 // - G5_klass : klass required by the target method
648 // - O0_argslot : argslot index in vmarg; may be required in the failing path
649 // - O1_scratch : argument klass to test
650 // - G3_method_handle: adapter method handle
651 __ check_klass_subtype(O1_scratch, G5_klass, O2_scratch, O3_scratch, done);
653 // If we get here, the type check failed!
654 __ load_heap_oop(G3_amh_argument, O2_required); // required class
655 __ ld_ptr( vmarg, O1_actual); // bad object
656 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch);
657 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining?
659 __ bind(done);
660 // Get the new MH:
661 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
662 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
663 }
664 break;
666 case _adapter_prim_to_prim:
667 case _adapter_ref_to_prim:
668 // Handled completely by optimized cases.
669 __ stop("init_AdapterMethodHandle should not issue this");
670 break;
672 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
673 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
674 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
675 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
676 {
677 // Perform an in-place conversion to int or an int subword.
678 __ ldsw(G3_amh_vmargslot, O0_argslot);
679 Address value;
680 Address vmarg = __ argument_address(O0_argslot);
681 bool value_left_justified = false;
683 switch (ek) {
684 case _adapter_opt_i2i:
685 value = vmarg;
686 break;
687 case _adapter_opt_l2i:
688 {
689 // just delete the extra slot
690 #ifdef _LP64
691 // In V9, longs are given 2 64-bit slots in the interpreter, but the
692 // data is passed in only 1 slot.
693 // Keep the second slot.
694 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot);
695 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
696 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value.
697 vmarg = Address(O0_argslot, Interpreter::stackElementSize);
698 #else
699 // Keep the first slot.
700 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
701 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
702 value = Address(O0_argslot, 0);
703 vmarg = value;
704 #endif
705 }
706 break;
707 case _adapter_opt_unboxi:
708 {
709 // Load the value up from the heap.
710 __ ld_ptr(vmarg, O1_scratch);
711 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
712 #ifdef ASSERT
713 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
714 if (is_subword_type(BasicType(bt)))
715 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
716 }
717 #endif
718 __ null_check(O1_scratch, value_offset);
719 value = Address(O1_scratch, value_offset);
720 #ifdef _BIG_ENDIAN
721 // Values stored in objects are packed.
722 value_left_justified = true;
723 #endif
724 }
725 break;
726 default:
727 ShouldNotReachHere();
728 }
730 // This check is required on _BIG_ENDIAN
731 Register G5_vminfo = G5_index;
732 __ ldsw(G3_amh_conversion, G5_vminfo);
733 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
735 // Original 32-bit vmdata word must be of this form:
736 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
737 __ lduw(value, O1_scratch);
738 if (!value_left_justified)
739 __ sll(O1_scratch, G5_vminfo, O1_scratch);
740 Label zero_extend, done;
741 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
742 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
743 __ delayed()->nop();
745 // this path is taken for int->byte, int->short
746 __ sra(O1_scratch, G5_vminfo, O1_scratch);
747 __ ba(false, done);
748 __ delayed()->nop();
750 __ bind(zero_extend);
751 // this is taken for int->char
752 __ srl(O1_scratch, G5_vminfo, O1_scratch);
754 __ bind(done);
755 __ st(O1_scratch, vmarg);
757 // Get the new MH:
758 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
759 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
760 }
761 break;
763 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
764 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
765 {
766 // Perform an in-place int-to-long or ref-to-long conversion.
767 __ ldsw(G3_amh_vmargslot, O0_argslot);
769 // On big-endian machine we duplicate the slot and store the MSW
770 // in the first slot.
771 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
773 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
775 Address arg_lsw(O0_argslot, 0);
776 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
778 switch (ek) {
779 case _adapter_opt_i2l:
780 {
781 #ifdef _LP64
782 __ ldsw(arg_lsw, O2_scratch); // Load LSW sign-extended
783 #else
784 __ ldsw(arg_lsw, O3_scratch); // Load LSW sign-extended
785 __ srlx(O3_scratch, BitsPerInt, O2_scratch); // Move MSW value to lower 32-bits for std
786 #endif
787 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
788 }
789 break;
790 case _adapter_opt_unboxl:
791 {
792 // Load the value up from the heap.
793 __ ld_ptr(arg_lsw, O1_scratch);
794 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
795 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
796 __ null_check(O1_scratch, value_offset);
797 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
798 __ st_long(O2_scratch, arg_msw);
799 }
800 break;
801 default:
802 ShouldNotReachHere();
803 }
805 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
806 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
807 }
808 break;
810 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
811 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
812 {
813 // perform an in-place floating primitive conversion
814 __ unimplemented(entry_name(ek));
815 }
816 break;
818 case _adapter_prim_to_ref:
819 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
820 break;
822 case _adapter_swap_args:
823 case _adapter_rot_args:
824 // handled completely by optimized cases
825 __ stop("init_AdapterMethodHandle should not issue this");
826 break;
828 case _adapter_opt_swap_1:
829 case _adapter_opt_swap_2:
830 case _adapter_opt_rot_1_up:
831 case _adapter_opt_rot_1_down:
832 case _adapter_opt_rot_2_up:
833 case _adapter_opt_rot_2_down:
834 {
835 int swap_bytes = 0, rotate = 0;
836 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
838 // 'argslot' is the position of the first argument to swap.
839 __ ldsw(G3_amh_vmargslot, O0_argslot);
840 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
842 // 'vminfo' is the second.
843 Register O1_destslot = O1_scratch;
844 __ ldsw(G3_amh_conversion, O1_destslot);
845 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
846 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
847 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
849 if (!rotate) {
850 for (int i = 0; i < swap_bytes; i += wordSize) {
851 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
852 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
853 __ st_ptr(O3_scratch, Address(O0_argslot, i));
854 __ st_ptr(O2_scratch, Address(O1_destslot, i));
855 }
856 } else {
857 // Save the first chunk, which is going to get overwritten.
858 switch (swap_bytes) {
859 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
860 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
861 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
862 default: ShouldNotReachHere();
863 }
865 if (rotate > 0) {
866 // Rorate upward.
867 __ sub(O0_argslot, swap_bytes, O0_argslot);
868 #if ASSERT
869 {
870 // Verify that argslot > destslot, by at least swap_bytes.
871 Label L_ok;
872 __ cmp(O0_argslot, O1_destslot);
873 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
874 __ delayed()->nop();
875 __ stop("source must be above destination (upward rotation)");
876 __ bind(L_ok);
877 }
878 #endif
879 // Work argslot down to destslot, copying contiguous data upwards.
880 // Pseudo-code:
881 // argslot = src_addr - swap_bytes
882 // destslot = dest_addr
883 // while (argslot >= destslot) {
884 // *(argslot + swap_bytes) = *(argslot + 0);
885 // argslot--;
886 // }
887 Label loop;
888 __ bind(loop);
889 __ ld_ptr(Address(O0_argslot, 0), G5_index);
890 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
891 __ sub(O0_argslot, wordSize, O0_argslot);
892 __ cmp(O0_argslot, O1_destslot);
893 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
894 __ delayed()->nop(); // FILLME
895 } else {
896 __ add(O0_argslot, swap_bytes, O0_argslot);
897 #if ASSERT
898 {
899 // Verify that argslot < destslot, by at least swap_bytes.
900 Label L_ok;
901 __ cmp(O0_argslot, O1_destslot);
902 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
903 __ delayed()->nop();
904 __ stop("source must be above destination (upward rotation)");
905 __ bind(L_ok);
906 }
907 #endif
908 // Work argslot up to destslot, copying contiguous data downwards.
909 // Pseudo-code:
910 // argslot = src_addr + swap_bytes
911 // destslot = dest_addr
912 // while (argslot >= destslot) {
913 // *(argslot - swap_bytes) = *(argslot + 0);
914 // argslot++;
915 // }
916 Label loop;
917 __ bind(loop);
918 __ ld_ptr(Address(O0_argslot, 0), G5_index);
919 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
920 __ add(O0_argslot, wordSize, O0_argslot);
921 __ cmp(O0_argslot, O1_destslot);
922 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
923 __ delayed()->nop(); // FILLME
924 }
926 // Store the original first chunk into the destination slot, now free.
927 switch (swap_bytes) {
928 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
929 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
930 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
931 default: ShouldNotReachHere();
932 }
933 }
935 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
936 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
937 }
938 break;
940 case _adapter_dup_args:
941 {
942 // 'argslot' is the position of the first argument to duplicate.
943 __ ldsw(G3_amh_vmargslot, O0_argslot);
944 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
946 // 'stack_move' is negative number of words to duplicate.
947 Register G5_stack_move = G5_index;
948 __ ldsw(G3_amh_conversion, G5_stack_move);
949 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
951 // Remember the old Gargs (argslot[0]).
952 Register O1_oldarg = O1_scratch;
953 __ mov(Gargs, O1_oldarg);
955 // Move Gargs down to make room for dups.
956 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
957 __ add(Gargs, G5_stack_move, Gargs);
959 // Compute the new Gargs (argslot[0]).
960 Register O2_newarg = O2_scratch;
961 __ mov(Gargs, O2_newarg);
963 // Copy from oldarg[0...] down to newarg[0...]
964 // Pseude-code:
965 // O1_oldarg = old-Gargs
966 // O2_newarg = new-Gargs
967 // O0_argslot = argslot
968 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
969 Label loop;
970 __ bind(loop);
971 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
972 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
973 __ add(O0_argslot, wordSize, O0_argslot);
974 __ add(O2_newarg, wordSize, O2_newarg);
975 __ cmp(O2_newarg, O1_oldarg);
976 __ brx(Assembler::less, false, Assembler::pt, loop);
977 __ delayed()->nop(); // FILLME
979 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
980 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
981 }
982 break;
984 case _adapter_drop_args:
985 {
986 // 'argslot' is the position of the first argument to nuke.
987 __ ldsw(G3_amh_vmargslot, O0_argslot);
988 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
990 // 'stack_move' is number of words to drop.
991 Register G5_stack_move = G5_index;
992 __ ldsw(G3_amh_conversion, G5_stack_move);
993 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
995 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
997 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
998 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
999 }
1000 break;
1002 case _adapter_collect_args:
1003 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1004 break;
1006 case _adapter_spread_args:
1007 // Handled completely by optimized cases.
1008 __ stop("init_AdapterMethodHandle should not issue this");
1009 break;
1011 case _adapter_opt_spread_0:
1012 case _adapter_opt_spread_1:
1013 case _adapter_opt_spread_more:
1014 {
1015 // spread an array out into a group of arguments
1016 __ unimplemented(entry_name(ek));
1017 }
1018 break;
1020 case _adapter_flyby:
1021 case _adapter_ricochet:
1022 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1023 break;
1025 default:
1026 ShouldNotReachHere();
1027 }
1029 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
1030 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1032 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
1033 }