Mon, 14 Feb 2011 03:21:18 -0800
7018378: JSR 292: _bound_int_mh produces wrong result on 64-bit SPARC
Reviewed-by: kvn
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.
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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
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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_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot);
116 __ ldsw( Address(O4_argslot, __ delayed_value(java_dyn_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_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O2_form);
145 // load_heap_oop(Address(O2_form, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter);
146 // deal with old JDK versions:
147 __ add( Address(O2_form, __ delayed_value(java_dyn_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 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
355 print_method_handle(mh);
356 }
357 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
358 if (!TraceMethodHandles) return;
359 BLOCK_COMMENT("trace_method_handle {");
360 // save: Gargs, O5_savedSP
361 __ save_frame(16);
362 __ set((intptr_t) adaptername, O0);
363 __ mov(G3_method_handle, O1);
364 __ mov(G3_method_handle, L3);
365 __ mov(Gargs, L4);
366 __ mov(G5_method_type, L5);
367 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
369 __ mov(L3, G3_method_handle);
370 __ mov(L4, Gargs);
371 __ mov(L5, G5_method_type);
372 __ restore();
373 BLOCK_COMMENT("} trace_method_handle");
374 }
375 #endif // PRODUCT
377 // which conversion op types are implemented here?
378 int MethodHandles::adapter_conversion_ops_supported_mask() {
379 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY)
380 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW)
381 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST)
382 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM)
383 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM)
384 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS)
385 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS)
386 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS)
387 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS)
388 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
389 );
390 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
391 }
393 //------------------------------------------------------------------------------
394 // MethodHandles::generate_method_handle_stub
395 //
396 // Generate an "entry" field for a method handle.
397 // This determines how the method handle will respond to calls.
398 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
399 // Here is the register state during an interpreted call,
400 // as set up by generate_method_handle_interpreter_entry():
401 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
402 // - G3: receiver method handle
403 // - O5_savedSP: sender SP (must preserve)
405 const Register O0_argslot = O0;
406 const Register O1_scratch = O1;
407 const Register O2_scratch = O2;
408 const Register O3_scratch = O3;
409 const Register G5_index = G5;
411 // Argument registers for _raise_exception.
412 const Register O0_code = O0;
413 const Register O1_actual = O1;
414 const Register O2_required = O2;
416 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
418 // Some handy addresses:
419 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
421 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
423 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
425 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes());
426 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes());
428 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes());
429 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes());
430 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes());
432 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
434 if (have_entry(ek)) {
435 __ nop(); // empty stubs make SG sick
436 return;
437 }
439 address interp_entry = __ pc();
441 trace_method_handle(_masm, entry_name(ek));
443 switch ((int) ek) {
444 case _raise_exception:
445 {
446 // Not a real MH entry, but rather shared code for raising an
447 // exception. Since we use a C2I adapter to set up the
448 // interpreter state, arguments are expected in compiler
449 // argument registers.
450 assert(raise_exception_method(), "must be set");
451 address c2i_entry = raise_exception_method()->get_c2i_entry();
452 assert(c2i_entry, "method must be linked");
454 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
456 Label L_no_method;
457 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
458 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
459 __ ld_ptr(Address(G5_method, 0), G5_method);
460 __ tst(G5_method);
461 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
462 __ delayed()->nop();
464 const int jobject_oop_offset = 0;
465 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
466 __ tst(G5_method);
467 __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
468 __ delayed()->nop();
470 __ verify_oop(G5_method);
471 __ jump_to(AddressLiteral(c2i_entry), O3_scratch);
472 __ delayed()->nop();
474 // If we get here, the Java runtime did not do its job of creating the exception.
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), 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 // - O1_scratch : argument klass to test
649 // - G3_method_handle: adapter method handle
650 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
652 // If we get here, the type check failed!
653 __ load_heap_oop(G3_amh_argument, O2_required); // required class
654 __ ld_ptr( vmarg, O1_actual); // bad object
655 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch);
656 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining?
658 __ bind(done);
659 // Get the new MH:
660 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
661 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
662 }
663 break;
665 case _adapter_prim_to_prim:
666 case _adapter_ref_to_prim:
667 // Handled completely by optimized cases.
668 __ stop("init_AdapterMethodHandle should not issue this");
669 break;
671 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
672 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
673 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
674 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
675 {
676 // Perform an in-place conversion to int or an int subword.
677 __ ldsw(G3_amh_vmargslot, O0_argslot);
678 Address value;
679 Address vmarg = __ argument_address(O0_argslot);
680 bool value_left_justified = false;
682 switch (ek) {
683 case _adapter_opt_i2i:
684 value = vmarg;
685 break;
686 case _adapter_opt_l2i:
687 {
688 // just delete the extra slot
689 #ifdef _LP64
690 // In V9, longs are given 2 64-bit slots in the interpreter, but the
691 // data is passed in only 1 slot.
692 // Keep the second slot.
693 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot);
694 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
695 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value.
696 vmarg = Address(O0_argslot, Interpreter::stackElementSize);
697 #else
698 // Keep the first slot.
699 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
700 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
701 value = Address(O0_argslot, 0);
702 vmarg = value;
703 #endif
704 }
705 break;
706 case _adapter_opt_unboxi:
707 {
708 // Load the value up from the heap.
709 __ ld_ptr(vmarg, O1_scratch);
710 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
711 #ifdef ASSERT
712 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
713 if (is_subword_type(BasicType(bt)))
714 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
715 }
716 #endif
717 __ null_check(O1_scratch, value_offset);
718 value = Address(O1_scratch, value_offset);
719 #ifdef _BIG_ENDIAN
720 // Values stored in objects are packed.
721 value_left_justified = true;
722 #endif
723 }
724 break;
725 default:
726 ShouldNotReachHere();
727 }
729 // This check is required on _BIG_ENDIAN
730 Register G5_vminfo = G5_index;
731 __ ldsw(G3_amh_conversion, G5_vminfo);
732 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
734 // Original 32-bit vmdata word must be of this form:
735 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
736 __ lduw(value, O1_scratch);
737 if (!value_left_justified)
738 __ sll(O1_scratch, G5_vminfo, O1_scratch);
739 Label zero_extend, done;
740 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
741 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
742 __ delayed()->nop();
744 // this path is taken for int->byte, int->short
745 __ sra(O1_scratch, G5_vminfo, O1_scratch);
746 __ ba(false, done);
747 __ delayed()->nop();
749 __ bind(zero_extend);
750 // this is taken for int->char
751 __ srl(O1_scratch, G5_vminfo, O1_scratch);
753 __ bind(done);
754 __ st(O1_scratch, vmarg);
756 // Get the new MH:
757 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
758 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
759 }
760 break;
762 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
763 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
764 {
765 // Perform an in-place int-to-long or ref-to-long conversion.
766 __ ldsw(G3_amh_vmargslot, O0_argslot);
768 // On big-endian machine we duplicate the slot and store the MSW
769 // in the first slot.
770 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
772 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
774 Address arg_lsw(O0_argslot, 0);
775 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
777 switch (ek) {
778 case _adapter_opt_i2l:
779 {
780 __ ldsw(arg_lsw, O2_scratch); // Load LSW
781 NOT_LP64(__ srlx(O2_scratch, BitsPerInt, O3_scratch)); // Move high bits to lower bits for std
782 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
783 }
784 break;
785 case _adapter_opt_unboxl:
786 {
787 // Load the value up from the heap.
788 __ ld_ptr(arg_lsw, O1_scratch);
789 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
790 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
791 __ null_check(O1_scratch, value_offset);
792 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
793 __ st_long(O2_scratch, arg_msw);
794 }
795 break;
796 default:
797 ShouldNotReachHere();
798 }
800 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
801 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
802 }
803 break;
805 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
806 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
807 {
808 // perform an in-place floating primitive conversion
809 __ unimplemented(entry_name(ek));
810 }
811 break;
813 case _adapter_prim_to_ref:
814 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
815 break;
817 case _adapter_swap_args:
818 case _adapter_rot_args:
819 // handled completely by optimized cases
820 __ stop("init_AdapterMethodHandle should not issue this");
821 break;
823 case _adapter_opt_swap_1:
824 case _adapter_opt_swap_2:
825 case _adapter_opt_rot_1_up:
826 case _adapter_opt_rot_1_down:
827 case _adapter_opt_rot_2_up:
828 case _adapter_opt_rot_2_down:
829 {
830 int swap_bytes = 0, rotate = 0;
831 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
833 // 'argslot' is the position of the first argument to swap.
834 __ ldsw(G3_amh_vmargslot, O0_argslot);
835 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
837 // 'vminfo' is the second.
838 Register O1_destslot = O1_scratch;
839 __ ldsw(G3_amh_conversion, O1_destslot);
840 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
841 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
842 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
844 if (!rotate) {
845 for (int i = 0; i < swap_bytes; i += wordSize) {
846 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
847 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
848 __ st_ptr(O3_scratch, Address(O0_argslot, i));
849 __ st_ptr(O2_scratch, Address(O1_destslot, i));
850 }
851 } else {
852 // Save the first chunk, which is going to get overwritten.
853 switch (swap_bytes) {
854 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
855 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
856 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
857 default: ShouldNotReachHere();
858 }
860 if (rotate > 0) {
861 // Rorate upward.
862 __ sub(O0_argslot, swap_bytes, O0_argslot);
863 #if ASSERT
864 {
865 // Verify that argslot > destslot, by at least swap_bytes.
866 Label L_ok;
867 __ cmp(O0_argslot, O1_destslot);
868 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
869 __ delayed()->nop();
870 __ stop("source must be above destination (upward rotation)");
871 __ bind(L_ok);
872 }
873 #endif
874 // Work argslot down to destslot, copying contiguous data upwards.
875 // Pseudo-code:
876 // argslot = src_addr - swap_bytes
877 // destslot = dest_addr
878 // while (argslot >= destslot) {
879 // *(argslot + swap_bytes) = *(argslot + 0);
880 // argslot--;
881 // }
882 Label loop;
883 __ bind(loop);
884 __ ld_ptr(Address(O0_argslot, 0), G5_index);
885 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
886 __ sub(O0_argslot, wordSize, O0_argslot);
887 __ cmp(O0_argslot, O1_destslot);
888 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
889 __ delayed()->nop(); // FILLME
890 } else {
891 __ add(O0_argslot, swap_bytes, O0_argslot);
892 #if ASSERT
893 {
894 // Verify that argslot < destslot, by at least swap_bytes.
895 Label L_ok;
896 __ cmp(O0_argslot, O1_destslot);
897 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
898 __ delayed()->nop();
899 __ stop("source must be above destination (upward rotation)");
900 __ bind(L_ok);
901 }
902 #endif
903 // Work argslot up to destslot, copying contiguous data downwards.
904 // Pseudo-code:
905 // argslot = src_addr + swap_bytes
906 // destslot = dest_addr
907 // while (argslot >= destslot) {
908 // *(argslot - swap_bytes) = *(argslot + 0);
909 // argslot++;
910 // }
911 Label loop;
912 __ bind(loop);
913 __ ld_ptr(Address(O0_argslot, 0), G5_index);
914 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
915 __ add(O0_argslot, wordSize, O0_argslot);
916 __ cmp(O0_argslot, O1_destslot);
917 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
918 __ delayed()->nop(); // FILLME
919 }
921 // Store the original first chunk into the destination slot, now free.
922 switch (swap_bytes) {
923 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
924 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
925 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
926 default: ShouldNotReachHere();
927 }
928 }
930 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
931 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
932 }
933 break;
935 case _adapter_dup_args:
936 {
937 // 'argslot' is the position of the first argument to duplicate.
938 __ ldsw(G3_amh_vmargslot, O0_argslot);
939 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
941 // 'stack_move' is negative number of words to duplicate.
942 Register G5_stack_move = G5_index;
943 __ ldsw(G3_amh_conversion, G5_stack_move);
944 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
946 // Remember the old Gargs (argslot[0]).
947 Register O1_oldarg = O1_scratch;
948 __ mov(Gargs, O1_oldarg);
950 // Move Gargs down to make room for dups.
951 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
952 __ add(Gargs, G5_stack_move, Gargs);
954 // Compute the new Gargs (argslot[0]).
955 Register O2_newarg = O2_scratch;
956 __ mov(Gargs, O2_newarg);
958 // Copy from oldarg[0...] down to newarg[0...]
959 // Pseude-code:
960 // O1_oldarg = old-Gargs
961 // O2_newarg = new-Gargs
962 // O0_argslot = argslot
963 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
964 Label loop;
965 __ bind(loop);
966 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
967 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
968 __ add(O0_argslot, wordSize, O0_argslot);
969 __ add(O2_newarg, wordSize, O2_newarg);
970 __ cmp(O2_newarg, O1_oldarg);
971 __ brx(Assembler::less, false, Assembler::pt, loop);
972 __ delayed()->nop(); // FILLME
974 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
975 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
976 }
977 break;
979 case _adapter_drop_args:
980 {
981 // 'argslot' is the position of the first argument to nuke.
982 __ ldsw(G3_amh_vmargslot, O0_argslot);
983 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
985 // 'stack_move' is number of words to drop.
986 Register G5_stack_move = G5_index;
987 __ ldsw(G3_amh_conversion, G5_stack_move);
988 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
990 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
992 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
993 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
994 }
995 break;
997 case _adapter_collect_args:
998 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
999 break;
1001 case _adapter_spread_args:
1002 // Handled completely by optimized cases.
1003 __ stop("init_AdapterMethodHandle should not issue this");
1004 break;
1006 case _adapter_opt_spread_0:
1007 case _adapter_opt_spread_1:
1008 case _adapter_opt_spread_more:
1009 {
1010 // spread an array out into a group of arguments
1011 __ unimplemented(entry_name(ek));
1012 }
1013 break;
1015 case _adapter_flyby:
1016 case _adapter_ricochet:
1017 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1018 break;
1020 default:
1021 ShouldNotReachHere();
1022 }
1024 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
1025 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1027 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
1028 }