1 /*
2 * Copyright (c) 2008, 2010, 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 "incls/_precompiled.incl"
26 #include "incls/_methodHandles_sparc.cpp.incl"
27
28 #define __ _masm->
29
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 }
41
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);
46
47 return (address) me;
48 }
49
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");
54
55 // Fill in the real end_address:
56 __ align(wordSize);
57 me->set_end_address(__ pc());
58
59 return me;
60 }
61
62
63 // Code generation
64 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
65 // I5_savedSP: sender SP (must preserve)
66 // G4 (Gargs): incoming argument list (must preserve)
67 // G5_method: invoke methodOop; becomes method type.
68 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots])
69 // O0, O1: garbage temps, blown away
70 Register O0_argslot = O0;
71 Register O1_scratch = O1;
72
73 // emit WrongMethodType path first, to enable back-branch from main path
74 Label wrong_method_type;
75 __ bind(wrong_method_type);
76 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
77 __ delayed()->nop();
78
79 // here's where control starts out:
80 __ align(CodeEntryAlignment);
81 address entry_point = __ pc();
82
83 // fetch the MethodType from the method handle into G5_method_type
84 {
85 Register tem = G5_method;
86 assert(tem == G5_method_type, "yes, it's the same register");
87 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
88 __ ld_ptr(Address(tem, *pchase), G5_method_type);
89 }
90 }
91
92 // given the MethodType, find out where the MH argument is buried
93 __ ld_ptr(Address(G5_method_type, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O0_argslot);
94 __ ldsw( Address(O0_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O0_argslot);
95 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
96
97 __ check_method_handle_type(G5_method_type, G3_method_handle, O1_scratch, wrong_method_type);
98 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
99
100 return entry_point;
101 }
102
103
104 #ifdef ASSERT
105 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
106 // Verify that argslot lies within (Gargs, FP].
107 Label L_ok, L_bad;
108 #ifdef _LP64
109 __ add(FP, STACK_BIAS, temp_reg);
110 __ cmp(argslot_reg, temp_reg);
111 #else
112 __ cmp(argslot_reg, FP);
113 #endif
114 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad);
115 __ delayed()->nop();
116 __ cmp(Gargs, argslot_reg);
117 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
118 __ delayed()->nop();
119 __ bind(L_bad);
120 __ stop(error_message);
121 __ bind(L_ok);
122 }
123 #endif
124
125
126 // Helper to insert argument slots into the stack.
127 // arg_slots must be a multiple of stack_move_unit() and <= 0
128 void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
129 RegisterOrConstant arg_slots,
130 int arg_mask,
131 Register argslot_reg,
132 Register temp_reg, Register temp2_reg, Register temp3_reg) {
133 assert(temp3_reg != noreg, "temp3 required");
134 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
135 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
136
137 #ifdef ASSERT
138 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame");
139 if (arg_slots.is_register()) {
140 Label L_ok, L_bad;
141 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
142 __ br(Assembler::greater, false, Assembler::pn, L_bad);
143 __ delayed()->nop();
144 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
145 __ br(Assembler::zero, false, Assembler::pt, L_ok);
146 __ delayed()->nop();
147 __ bind(L_bad);
148 __ stop("assert arg_slots <= 0 and clear low bits");
149 __ bind(L_ok);
150 } else {
151 assert(arg_slots.as_constant() <= 0, "");
152 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
153 }
154 #endif // ASSERT
155
156 #ifdef _LP64
157 if (arg_slots.is_register()) {
158 // Was arg_slots register loaded as signed int?
159 Label L_ok;
160 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg);
161 __ sra(temp_reg, BitsPerInt, temp_reg);
162 __ cmp(arg_slots.as_register(), temp_reg);
163 __ br(Assembler::equal, false, Assembler::pt, L_ok);
164 __ delayed()->nop();
165 __ stop("arg_slots register not loaded as signed int");
166 __ bind(L_ok);
167 }
168 #endif
169
170 // Make space on the stack for the inserted argument(s).
171 // Then pull down everything shallower than argslot_reg.
172 // The stacked return address gets pulled down with everything else.
173 // That is, copy [sp, argslot) downward by -size words. In pseudo-code:
174 // sp -= size;
175 // for (temp = sp + size; temp < argslot; temp++)
176 // temp[-size] = temp[0]
177 // argslot -= size;
178 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
179
180 // Keep the stack pointer 2*wordSize aligned.
181 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
182 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
183 __ add(SP, masked_offset, SP);
184
185 __ mov(Gargs, temp_reg); // source pointer for copy
186 __ add(Gargs, offset, Gargs);
187
188 {
189 Label loop;
190 __ bind(loop);
191 // pull one word down each time through the loop
192 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
193 __ st_ptr(temp2_reg, Address(temp_reg, offset));
194 __ add(temp_reg, wordSize, temp_reg);
195 __ cmp(temp_reg, argslot_reg);
196 __ brx(Assembler::less, false, Assembler::pt, loop);
197 __ delayed()->nop(); // FILLME
198 }
199
200 // Now move the argslot down, to point to the opened-up space.
201 __ add(argslot_reg, offset, argslot_reg);
202 }
203
204
205 // Helper to remove argument slots from the stack.
206 // arg_slots must be a multiple of stack_move_unit() and >= 0
207 void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
208 RegisterOrConstant arg_slots,
209 Register argslot_reg,
210 Register temp_reg, Register temp2_reg, Register temp3_reg) {
211 assert(temp3_reg != noreg, "temp3 required");
212 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
213 (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
214
215 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
216
217 #ifdef ASSERT
218 // Verify that [argslot..argslot+size) lies within (Gargs, FP).
219 __ add(argslot_reg, offset, temp2_reg);
220 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame");
221 if (arg_slots.is_register()) {
222 Label L_ok, L_bad;
223 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
224 __ br(Assembler::less, false, Assembler::pn, L_bad);
225 __ delayed()->nop();
226 __ btst(-stack_move_unit() - 1, arg_slots.as_register());
227 __ br(Assembler::zero, false, Assembler::pt, L_ok);
228 __ delayed()->nop();
229 __ bind(L_bad);
230 __ stop("assert arg_slots >= 0 and clear low bits");
231 __ bind(L_ok);
232 } else {
233 assert(arg_slots.as_constant() >= 0, "");
234 assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
235 }
236 #endif // ASSERT
237
238 // Pull up everything shallower than argslot.
239 // Then remove the excess space on the stack.
240 // The stacked return address gets pulled up with everything else.
241 // That is, copy [sp, argslot) upward by size words. In pseudo-code:
242 // for (temp = argslot-1; temp >= sp; --temp)
243 // temp[size] = temp[0]
244 // argslot += size;
245 // sp += size;
246 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy
247 {
248 Label loop;
249 __ bind(loop);
250 // pull one word up each time through the loop
251 __ ld_ptr(Address(temp_reg, 0), temp2_reg);
252 __ st_ptr(temp2_reg, Address(temp_reg, offset));
253 __ sub(temp_reg, wordSize, temp_reg);
254 __ cmp(temp_reg, Gargs);
255 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop);
256 __ delayed()->nop(); // FILLME
257 }
258
259 // Now move the argslot up, to point to the just-copied block.
260 __ add(Gargs, offset, Gargs);
261 // And adjust the argslot address to point at the deletion point.
262 __ add(argslot_reg, offset, argslot_reg);
263
264 // Keep the stack pointer 2*wordSize aligned.
265 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
266 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
267 __ add(SP, masked_offset, SP);
268 }
269
270
271 #ifndef PRODUCT
272 extern "C" void print_method_handle(oop mh);
273 void trace_method_handle_stub(const char* adaptername,
274 oop mh) {
275 #if 0
276 intptr_t* entry_sp,
277 intptr_t* saved_sp,
278 intptr_t* saved_bp) {
279 // called as a leaf from native code: do not block the JVM!
280 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
281 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
282 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
283 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
284 if (last_sp != saved_sp)
285 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
286 #endif
287
288 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
289 print_method_handle(mh);
290 }
291 #endif // PRODUCT
292
293 // which conversion op types are implemented here?
294 int MethodHandles::adapter_conversion_ops_supported_mask() {
295 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY)
296 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW)
297 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST)
298 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM)
299 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM)
300 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS)
301 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS)
302 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS)
303 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS)
304 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
305 );
306 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
307 }
308
309 //------------------------------------------------------------------------------
310 // MethodHandles::generate_method_handle_stub
311 //
312 // Generate an "entry" field for a method handle.
313 // This determines how the method handle will respond to calls.
314 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
315 // Here is the register state during an interpreted call,
316 // as set up by generate_method_handle_interpreter_entry():
317 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
318 // - G3: receiver method handle
319 // - O5_savedSP: sender SP (must preserve)
320
321 Register O0_argslot = O0;
322 Register O1_scratch = O1;
323 Register O2_scratch = O2;
324 Register O3_scratch = O3;
325 Register G5_index = G5;
326
327 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
328
329 // Some handy addresses:
330 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
331
332 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
333
334 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
335
336 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes());
337 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes());
338
339 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes());
340 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes());
341 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes());
342
343 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
344
345 if (have_entry(ek)) {
346 __ nop(); // empty stubs make SG sick
347 return;
348 }
349
350 address interp_entry = __ pc();
351 if (UseCompressedOops) __ unimplemented("UseCompressedOops");
352
353 #ifndef PRODUCT
354 if (TraceMethodHandles) {
355 // save: Gargs, O5_savedSP
356 __ save(SP, -16*wordSize, SP);
357 __ set((intptr_t) entry_name(ek), O0);
358 __ mov(G3_method_handle, O1);
359 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
360 __ restore(SP, 16*wordSize, SP);
361 }
362 #endif // PRODUCT
363
364 switch ((int) ek) {
365 case _raise_exception:
366 {
367 // Not a real MH entry, but rather shared code for raising an
368 // exception. Extra local arguments are passed in scratch
369 // registers, as required type in O3, failing object (or NULL)
370 // in O2, failing bytecode type in O1.
371
372 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
373
374 // Push arguments as if coming from the interpreter.
375 Register O0_scratch = O0_argslot;
376 int stackElementSize = Interpreter::stackElementSize;
377
378 // Make space on the stack for the arguments and set Gargs
379 // correctly.
380 __ sub(SP, 4*stackElementSize, SP); // Keep stack aligned.
381 __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs);
382
383 // void raiseException(int code, Object actual, Object required)
384 __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code
385 __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual
386 __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required
387
388 Label no_method;
389 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
390 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
391 __ ld_ptr(Address(G5_method, 0), G5_method);
392 __ tst(G5_method);
393 __ brx(Assembler::zero, false, Assembler::pn, no_method);
394 __ delayed()->nop();
395
396 int jobject_oop_offset = 0;
397 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
398 __ tst(G5_method);
399 __ brx(Assembler::zero, false, Assembler::pn, no_method);
400 __ delayed()->nop();
401
402 __ verify_oop(G5_method);
403 __ jump_indirect_to(G5_method_fie, O1_scratch);
404 __ delayed()->nop();
405
406 // If we get here, the Java runtime did not do its job of creating the exception.
407 // Do something that is at least causes a valid throw from the interpreter.
408 __ bind(no_method);
409 __ unimplemented("_raise_exception no method");
410 }
411 break;
412
413 case _invokestatic_mh:
414 case _invokespecial_mh:
415 {
416 __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop
417 __ verify_oop(G5_method);
418 // Same as TemplateTable::invokestatic or invokespecial,
419 // minus the CP setup and profiling:
420 if (ek == _invokespecial_mh) {
421 // Must load & check the first argument before entering the target method.
422 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
423 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
424 __ null_check(G3_method_handle);
425 __ verify_oop(G3_method_handle);
426 }
427 __ jump_indirect_to(G5_method_fie, O1_scratch);
428 __ delayed()->nop();
429 }
430 break;
431
432 case _invokevirtual_mh:
433 {
434 // Same as TemplateTable::invokevirtual,
435 // minus the CP setup and profiling:
436
437 // Pick out the vtable index and receiver offset from the MH,
438 // and then we can discard it:
439 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
440 __ ldsw(G3_dmh_vmindex, G5_index);
441 // Note: The verifier allows us to ignore G3_mh_vmtarget.
442 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
443 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
444
445 // Get receiver klass:
446 Register O0_klass = O0_argslot;
447 __ load_klass(G3_method_handle, O0_klass);
448 __ verify_oop(O0_klass);
449
450 // Get target methodOop & entry point:
451 const int base = instanceKlass::vtable_start_offset() * wordSize;
452 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
453
454 __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
455 __ add(O0_klass, G5_index, O0_klass);
456 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
457 __ ld_ptr(vtable_entry_addr, G5_method);
458
459 __ verify_oop(G5_method);
460 __ jump_indirect_to(G5_method_fie, O1_scratch);
461 __ delayed()->nop();
462 }
463 break;
464
465 case _invokeinterface_mh:
466 {
467 // Same as TemplateTable::invokeinterface,
468 // minus the CP setup and profiling:
469 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
470 Register O1_intf = O1_scratch;
471 __ ld_ptr(G3_mh_vmtarget, O1_intf);
472 __ ldsw(G3_dmh_vmindex, G5_index);
473 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
474 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
475
476 // Get receiver klass:
477 Register O0_klass = O0_argslot;
478 __ load_klass(G3_method_handle, O0_klass);
479 __ verify_oop(O0_klass);
480
481 // Get interface:
482 Label no_such_interface;
483 __ verify_oop(O1_intf);
484 __ lookup_interface_method(O0_klass, O1_intf,
485 // Note: next two args must be the same:
486 G5_index, G5_method,
487 O2_scratch,
488 O3_scratch,
489 no_such_interface);
490
491 __ verify_oop(G5_method);
492 __ jump_indirect_to(G5_method_fie, O1_scratch);
493 __ delayed()->nop();
494
495 __ bind(no_such_interface);
496 // Throw an exception.
497 // For historical reasons, it will be IncompatibleClassChangeError.
498 __ unimplemented("not tested yet");
499 __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface
500 __ mov(O0_klass, O2_scratch); // bad receiver
501 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
502 __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining?
503 }
504 break;
505
506 case _bound_ref_mh:
507 case _bound_int_mh:
508 case _bound_long_mh:
509 case _bound_ref_direct_mh:
510 case _bound_int_direct_mh:
511 case _bound_long_direct_mh:
512 {
513 const bool direct_to_method = (ek >= _bound_ref_direct_mh);
514 BasicType arg_type = T_ILLEGAL;
515 int arg_mask = _INSERT_NO_MASK;
516 int arg_slots = -1;
517 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
518
519 // Make room for the new argument:
520 __ ldsw(G3_bmh_vmargslot, O0_argslot);
521 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
522
523 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
524
525 // Store bound argument into the new stack slot:
526 __ ld_ptr(G3_bmh_argument, O1_scratch);
527 if (arg_type == T_OBJECT) {
528 __ st_ptr(O1_scratch, Address(O0_argslot, 0));
529 } else {
530 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
531 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type));
532 if (arg_slots == 2) {
533 __ unimplemented("not yet tested");
534 #ifndef _LP64
535 __ signx(O2_scratch, O3_scratch); // Sign extend
536 #endif
537 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64
538 } else {
539 __ st_ptr( O2_scratch, Address(O0_argslot, 0));
540 }
541 }
542
543 if (direct_to_method) {
544 __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop
545 __ verify_oop(G5_method);
546 __ jump_indirect_to(G5_method_fie, O1_scratch);
547 __ delayed()->nop();
548 } else {
549 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
550 __ verify_oop(G3_method_handle);
551 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
552 }
553 }
554 break;
555
556 case _adapter_retype_only:
557 case _adapter_retype_raw:
558 // Immediately jump to the next MH layer:
559 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
560 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
561 // This is OK when all parameter types widen.
562 // It is also OK when a return type narrows.
563 break;
564
565 case _adapter_check_cast:
566 {
567 // Temps:
568 Register G5_klass = G5_index; // Interesting AMH data.
569
570 // Check a reference argument before jumping to the next layer of MH:
571 __ ldsw(G3_amh_vmargslot, O0_argslot);
572 Address vmarg = __ argument_address(O0_argslot);
573
574 // What class are we casting to?
575 __ ld_ptr(G3_amh_argument, G5_klass); // This is a Class object!
576 __ ld_ptr(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
577
578 Label done;
579 __ ld_ptr(vmarg, O1_scratch);
580 __ tst(O1_scratch);
581 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
582 __ delayed()->nop();
583 __ load_klass(O1_scratch, O1_scratch);
584
585 // Live at this point:
586 // - G5_klass : klass required by the target method
587 // - O1_scratch : argument klass to test
588 // - G3_method_handle: adapter method handle
589 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
590
591 // If we get here, the type check failed!
592 __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field
593 __ ld_ptr(G3_amh_argument, O3_scratch); // required class
594 __ ld_ptr(vmarg, O2_scratch); // bad object
595 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
596 __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining?
597
598 __ bind(done);
599 // Get the new MH:
600 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
601 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
602 }
603 break;
604
605 case _adapter_prim_to_prim:
606 case _adapter_ref_to_prim:
607 // Handled completely by optimized cases.
608 __ stop("init_AdapterMethodHandle should not issue this");
609 break;
610
611 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
612 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
613 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
614 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
615 {
616 // Perform an in-place conversion to int or an int subword.
617 __ ldsw(G3_amh_vmargslot, O0_argslot);
618 Address vmarg = __ argument_address(O0_argslot);
619 Address value;
620 bool value_left_justified = false;
621
622 switch (ek) {
623 case _adapter_opt_i2i:
624 case _adapter_opt_l2i:
625 __ unimplemented(entry_name(ek));
626 value = vmarg;
627 break;
628 case _adapter_opt_unboxi:
629 {
630 // Load the value up from the heap.
631 __ ld_ptr(vmarg, O1_scratch);
632 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
633 #ifdef ASSERT
634 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
635 if (is_subword_type(BasicType(bt)))
636 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
637 }
638 #endif
639 __ null_check(O1_scratch, value_offset);
640 value = Address(O1_scratch, value_offset);
641 #ifdef _BIG_ENDIAN
642 // Values stored in objects are packed.
643 value_left_justified = true;
644 #endif
645 }
646 break;
647 default:
648 ShouldNotReachHere();
649 }
650
651 // This check is required on _BIG_ENDIAN
652 Register G5_vminfo = G5_index;
653 __ ldsw(G3_amh_conversion, G5_vminfo);
654 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
655
656 // Original 32-bit vmdata word must be of this form:
657 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
658 __ lduw(value, O1_scratch);
659 if (!value_left_justified)
660 __ sll(O1_scratch, G5_vminfo, O1_scratch);
661 Label zero_extend, done;
662 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
663 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
664 __ delayed()->nop();
665
666 // this path is taken for int->byte, int->short
667 __ sra(O1_scratch, G5_vminfo, O1_scratch);
668 __ ba(false, done);
669 __ delayed()->nop();
670
671 __ bind(zero_extend);
672 // this is taken for int->char
673 __ srl(O1_scratch, G5_vminfo, O1_scratch);
674
675 __ bind(done);
676 __ st(O1_scratch, vmarg);
677
678 // Get the new MH:
679 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
680 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
681 }
682 break;
683
684 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
685 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
686 {
687 // Perform an in-place int-to-long or ref-to-long conversion.
688 __ ldsw(G3_amh_vmargslot, O0_argslot);
689
690 // On big-endian machine we duplicate the slot and store the MSW
691 // in the first slot.
692 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
693
694 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
695
696 Address arg_lsw(O0_argslot, 0);
697 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
698
699 switch (ek) {
700 case _adapter_opt_i2l:
701 {
702 __ ldsw(arg_lsw, O2_scratch); // Load LSW
703 #ifndef _LP64
704 __ signx(O2_scratch, O3_scratch); // Sign extend
705 #endif
706 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
707 }
708 break;
709 case _adapter_opt_unboxl:
710 {
711 // Load the value up from the heap.
712 __ ld_ptr(arg_lsw, O1_scratch);
713 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
714 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
715 __ null_check(O1_scratch, value_offset);
716 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
717 __ st_long(O2_scratch, arg_msw);
718 }
719 break;
720 default:
721 ShouldNotReachHere();
722 }
723
724 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
725 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
726 }
727 break;
728
729 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
730 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
731 {
732 // perform an in-place floating primitive conversion
733 __ unimplemented(entry_name(ek));
734 }
735 break;
736
737 case _adapter_prim_to_ref:
738 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
739 break;
740
741 case _adapter_swap_args:
742 case _adapter_rot_args:
743 // handled completely by optimized cases
744 __ stop("init_AdapterMethodHandle should not issue this");
745 break;
746
747 case _adapter_opt_swap_1:
748 case _adapter_opt_swap_2:
749 case _adapter_opt_rot_1_up:
750 case _adapter_opt_rot_1_down:
751 case _adapter_opt_rot_2_up:
752 case _adapter_opt_rot_2_down:
753 {
754 int swap_bytes = 0, rotate = 0;
755 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
756
757 // 'argslot' is the position of the first argument to swap.
758 __ ldsw(G3_amh_vmargslot, O0_argslot);
759 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
760
761 // 'vminfo' is the second.
762 Register O1_destslot = O1_scratch;
763 __ ldsw(G3_amh_conversion, O1_destslot);
764 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
765 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
766 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
767
768 if (!rotate) {
769 for (int i = 0; i < swap_bytes; i += wordSize) {
770 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
771 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
772 __ st_ptr(O3_scratch, Address(O0_argslot, i));
773 __ st_ptr(O2_scratch, Address(O1_destslot, i));
774 }
775 } else {
776 // Save the first chunk, which is going to get overwritten.
777 switch (swap_bytes) {
778 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
779 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
780 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
781 default: ShouldNotReachHere();
782 }
783
784 if (rotate > 0) {
785 // Rorate upward.
786 __ sub(O0_argslot, swap_bytes, O0_argslot);
787 #if ASSERT
788 {
789 // Verify that argslot > destslot, by at least swap_bytes.
790 Label L_ok;
791 __ cmp(O0_argslot, O1_destslot);
792 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
793 __ delayed()->nop();
794 __ stop("source must be above destination (upward rotation)");
795 __ bind(L_ok);
796 }
797 #endif
798 // Work argslot down to destslot, copying contiguous data upwards.
799 // Pseudo-code:
800 // argslot = src_addr - swap_bytes
801 // destslot = dest_addr
802 // while (argslot >= destslot) {
803 // *(argslot + swap_bytes) = *(argslot + 0);
804 // argslot--;
805 // }
806 Label loop;
807 __ bind(loop);
808 __ ld_ptr(Address(O0_argslot, 0), G5_index);
809 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
810 __ sub(O0_argslot, wordSize, O0_argslot);
811 __ cmp(O0_argslot, O1_destslot);
812 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
813 __ delayed()->nop(); // FILLME
814 } else {
815 __ add(O0_argslot, swap_bytes, O0_argslot);
816 #if ASSERT
817 {
818 // Verify that argslot < destslot, by at least swap_bytes.
819 Label L_ok;
820 __ cmp(O0_argslot, O1_destslot);
821 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
822 __ delayed()->nop();
823 __ stop("source must be above destination (upward rotation)");
824 __ bind(L_ok);
825 }
826 #endif
827 // Work argslot up to destslot, copying contiguous data downwards.
828 // Pseudo-code:
829 // argslot = src_addr + swap_bytes
830 // destslot = dest_addr
831 // while (argslot >= destslot) {
832 // *(argslot - swap_bytes) = *(argslot + 0);
833 // argslot++;
834 // }
835 Label loop;
836 __ bind(loop);
837 __ ld_ptr(Address(O0_argslot, 0), G5_index);
838 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
839 __ add(O0_argslot, wordSize, O0_argslot);
840 __ cmp(O0_argslot, O1_destslot);
841 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
842 __ delayed()->nop(); // FILLME
843 }
844
845 // Store the original first chunk into the destination slot, now free.
846 switch (swap_bytes) {
847 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
848 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
849 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
850 default: ShouldNotReachHere();
851 }
852 }
853
854 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
855 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
856 }
857 break;
858
859 case _adapter_dup_args:
860 {
861 // 'argslot' is the position of the first argument to duplicate.
862 __ ldsw(G3_amh_vmargslot, O0_argslot);
863 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
864
865 // 'stack_move' is negative number of words to duplicate.
866 Register G5_stack_move = G5_index;
867 __ ldsw(G3_amh_conversion, G5_stack_move);
868 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
869
870 // Remember the old Gargs (argslot[0]).
871 Register O1_oldarg = O1_scratch;
872 __ mov(Gargs, O1_oldarg);
873
874 // Move Gargs down to make room for dups.
875 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
876 __ add(Gargs, G5_stack_move, Gargs);
877
878 // Compute the new Gargs (argslot[0]).
879 Register O2_newarg = O2_scratch;
880 __ mov(Gargs, O2_newarg);
881
882 // Copy from oldarg[0...] down to newarg[0...]
883 // Pseude-code:
884 // O1_oldarg = old-Gargs
885 // O2_newarg = new-Gargs
886 // O0_argslot = argslot
887 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
888 Label loop;
889 __ bind(loop);
890 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
891 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
892 __ add(O0_argslot, wordSize, O0_argslot);
893 __ add(O2_newarg, wordSize, O2_newarg);
894 __ cmp(O2_newarg, O1_oldarg);
895 __ brx(Assembler::less, false, Assembler::pt, loop);
896 __ delayed()->nop(); // FILLME
897
898 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
899 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
900 }
901 break;
902
903 case _adapter_drop_args:
904 {
905 // 'argslot' is the position of the first argument to nuke.
906 __ ldsw(G3_amh_vmargslot, O0_argslot);
907 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
908
909 // 'stack_move' is number of words to drop.
910 Register G5_stack_move = G5_index;
911 __ ldsw(G3_amh_conversion, G5_stack_move);
912 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
913
914 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
915
916 __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
917 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
918 }
919 break;
920
921 case _adapter_collect_args:
922 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
923 break;
924
925 case _adapter_spread_args:
926 // Handled completely by optimized cases.
927 __ stop("init_AdapterMethodHandle should not issue this");
928 break;
929
930 case _adapter_opt_spread_0:
931 case _adapter_opt_spread_1:
932 case _adapter_opt_spread_more:
933 {
934 // spread an array out into a group of arguments
935 __ unimplemented(entry_name(ek));
936 }
937 break;
938
939 case _adapter_flyby:
940 case _adapter_ricochet:
941 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
942 break;
943
944 default:
945 ShouldNotReachHere();
946 }
947
948 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
949 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
950
951 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
952 }