Fri, 03 Dec 2010 06:14:37 -0800
7003798: test/compiler/6991596 fails with true != false
Summary: The test of 6991596 fails on SPARCV9.
Reviewed-by: kvn, never, jrose
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
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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).
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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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 Register O0_argslot = O0;
406 Register O1_scratch = O1;
407 Register O2_scratch = O2;
408 Register O3_scratch = O3;
409 Register G5_index = G5;
411 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
413 // Some handy addresses:
414 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
416 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
418 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
420 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes());
421 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes());
423 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes());
424 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes());
425 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes());
427 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
429 if (have_entry(ek)) {
430 __ nop(); // empty stubs make SG sick
431 return;
432 }
434 address interp_entry = __ pc();
436 trace_method_handle(_masm, entry_name(ek));
438 switch ((int) ek) {
439 case _raise_exception:
440 {
441 // Not a real MH entry, but rather shared code for raising an
442 // exception. Extra local arguments are passed in scratch
443 // registers, as required type in O3, failing object (or NULL)
444 // in O2, failing bytecode type in O1.
446 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
448 // Push arguments as if coming from the interpreter.
449 Register O0_scratch = O0_argslot;
450 int stackElementSize = Interpreter::stackElementSize;
452 // Make space on the stack for the arguments and set Gargs
453 // correctly.
454 __ sub(SP, 4*stackElementSize, SP); // Keep stack aligned.
455 __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs);
457 // void raiseException(int code, Object actual, Object required)
458 __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code
459 __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual
460 __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required
462 Label no_method;
463 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
464 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
465 __ ld_ptr(Address(G5_method, 0), G5_method);
466 __ tst(G5_method);
467 __ brx(Assembler::zero, false, Assembler::pn, no_method);
468 __ delayed()->nop();
470 int jobject_oop_offset = 0;
471 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
472 __ tst(G5_method);
473 __ brx(Assembler::zero, false, Assembler::pn, no_method);
474 __ delayed()->nop();
476 __ verify_oop(G5_method);
477 __ jump_indirect_to(G5_method_fie, O1_scratch);
478 __ delayed()->nop();
480 // If we get here, the Java runtime did not do its job of creating the exception.
481 // Do something that is at least causes a valid throw from the interpreter.
482 __ bind(no_method);
483 __ unimplemented("_raise_exception no method");
484 }
485 break;
487 case _invokestatic_mh:
488 case _invokespecial_mh:
489 {
490 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
491 __ verify_oop(G5_method);
492 // Same as TemplateTable::invokestatic or invokespecial,
493 // minus the CP setup and profiling:
494 if (ek == _invokespecial_mh) {
495 // Must load & check the first argument before entering the target method.
496 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
497 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
498 __ null_check(G3_method_handle);
499 __ verify_oop(G3_method_handle);
500 }
501 __ jump_indirect_to(G5_method_fie, O1_scratch);
502 __ delayed()->nop();
503 }
504 break;
506 case _invokevirtual_mh:
507 {
508 // Same as TemplateTable::invokevirtual,
509 // minus the CP setup and profiling:
511 // Pick out the vtable index and receiver offset from the MH,
512 // and then we can discard it:
513 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
514 __ ldsw(G3_dmh_vmindex, G5_index);
515 // Note: The verifier allows us to ignore G3_mh_vmtarget.
516 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
517 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
519 // Get receiver klass:
520 Register O0_klass = O0_argslot;
521 __ load_klass(G3_method_handle, O0_klass);
522 __ verify_oop(O0_klass);
524 // Get target methodOop & entry point:
525 const int base = instanceKlass::vtable_start_offset() * wordSize;
526 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
528 __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
529 __ add(O0_klass, G5_index, O0_klass);
530 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
531 __ ld_ptr(vtable_entry_addr, G5_method);
533 __ verify_oop(G5_method);
534 __ jump_indirect_to(G5_method_fie, O1_scratch);
535 __ delayed()->nop();
536 }
537 break;
539 case _invokeinterface_mh:
540 {
541 // Same as TemplateTable::invokeinterface,
542 // minus the CP setup and profiling:
543 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
544 Register O1_intf = O1_scratch;
545 __ load_heap_oop(G3_mh_vmtarget, O1_intf);
546 __ ldsw(G3_dmh_vmindex, G5_index);
547 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
548 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
550 // Get receiver klass:
551 Register O0_klass = O0_argslot;
552 __ load_klass(G3_method_handle, O0_klass);
553 __ verify_oop(O0_klass);
555 // Get interface:
556 Label no_such_interface;
557 __ verify_oop(O1_intf);
558 __ lookup_interface_method(O0_klass, O1_intf,
559 // Note: next two args must be the same:
560 G5_index, G5_method,
561 O2_scratch,
562 O3_scratch,
563 no_such_interface);
565 __ verify_oop(G5_method);
566 __ jump_indirect_to(G5_method_fie, O1_scratch);
567 __ delayed()->nop();
569 __ bind(no_such_interface);
570 // Throw an exception.
571 // For historical reasons, it will be IncompatibleClassChangeError.
572 __ unimplemented("not tested yet");
573 __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface
574 __ mov(O0_klass, O2_scratch); // bad receiver
575 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
576 __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining?
577 }
578 break;
580 case _bound_ref_mh:
581 case _bound_int_mh:
582 case _bound_long_mh:
583 case _bound_ref_direct_mh:
584 case _bound_int_direct_mh:
585 case _bound_long_direct_mh:
586 {
587 const bool direct_to_method = (ek >= _bound_ref_direct_mh);
588 BasicType arg_type = T_ILLEGAL;
589 int arg_mask = _INSERT_NO_MASK;
590 int arg_slots = -1;
591 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
593 // Make room for the new argument:
594 __ ldsw(G3_bmh_vmargslot, O0_argslot);
595 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
597 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
599 // Store bound argument into the new stack slot:
600 __ load_heap_oop(G3_bmh_argument, O1_scratch);
601 if (arg_type == T_OBJECT) {
602 __ st_ptr(O1_scratch, Address(O0_argslot, 0));
603 } else {
604 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
605 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type));
606 if (arg_slots == 2) {
607 __ unimplemented("not yet tested");
608 #ifndef _LP64
609 __ signx(O2_scratch, O3_scratch); // Sign extend
610 #endif
611 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64
612 } else {
613 __ st_ptr( O2_scratch, Address(O0_argslot, 0));
614 }
615 }
617 if (direct_to_method) {
618 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
619 __ verify_oop(G5_method);
620 __ jump_indirect_to(G5_method_fie, O1_scratch);
621 __ delayed()->nop();
622 } else {
623 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
624 __ verify_oop(G3_method_handle);
625 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
626 }
627 }
628 break;
630 case _adapter_retype_only:
631 case _adapter_retype_raw:
632 // Immediately jump to the next MH layer:
633 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
634 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
635 // This is OK when all parameter types widen.
636 // It is also OK when a return type narrows.
637 break;
639 case _adapter_check_cast:
640 {
641 // Temps:
642 Register G5_klass = G5_index; // Interesting AMH data.
644 // Check a reference argument before jumping to the next layer of MH:
645 __ ldsw(G3_amh_vmargslot, O0_argslot);
646 Address vmarg = __ argument_address(O0_argslot);
648 // What class are we casting to?
649 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object!
650 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
652 Label done;
653 __ ld_ptr(vmarg, O1_scratch);
654 __ tst(O1_scratch);
655 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
656 __ delayed()->nop();
657 __ load_klass(O1_scratch, O1_scratch);
659 // Live at this point:
660 // - G5_klass : klass required by the target method
661 // - O1_scratch : argument klass to test
662 // - G3_method_handle: adapter method handle
663 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
665 // If we get here, the type check failed!
666 __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field
667 __ load_heap_oop(G3_amh_argument, O3_scratch); // required class
668 __ ld_ptr(vmarg, O2_scratch); // bad object
669 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
670 __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining?
672 __ bind(done);
673 // Get the new MH:
674 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
675 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
676 }
677 break;
679 case _adapter_prim_to_prim:
680 case _adapter_ref_to_prim:
681 // Handled completely by optimized cases.
682 __ stop("init_AdapterMethodHandle should not issue this");
683 break;
685 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
686 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
687 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
688 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
689 {
690 // Perform an in-place conversion to int or an int subword.
691 __ ldsw(G3_amh_vmargslot, O0_argslot);
692 Address value;
693 Address vmarg = __ argument_address(O0_argslot);
694 bool value_left_justified = false;
696 switch (ek) {
697 case _adapter_opt_i2i:
698 value = vmarg;
699 break;
700 case _adapter_opt_l2i:
701 {
702 // just delete the extra slot
703 #ifdef _LP64
704 // In V9, longs are given 2 64-bit slots in the interpreter, but the
705 // data is passed in only 1 slot.
706 // Keep the second slot.
707 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot);
708 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
709 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value.
710 vmarg = Address(O0_argslot, Interpreter::stackElementSize);
711 #else
712 // Keep the first slot.
713 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
714 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch);
715 value = Address(O0_argslot, 0);
716 vmarg = value;
717 #endif
718 }
719 break;
720 case _adapter_opt_unboxi:
721 {
722 // Load the value up from the heap.
723 __ ld_ptr(vmarg, O1_scratch);
724 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
725 #ifdef ASSERT
726 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
727 if (is_subword_type(BasicType(bt)))
728 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
729 }
730 #endif
731 __ null_check(O1_scratch, value_offset);
732 value = Address(O1_scratch, value_offset);
733 #ifdef _BIG_ENDIAN
734 // Values stored in objects are packed.
735 value_left_justified = true;
736 #endif
737 }
738 break;
739 default:
740 ShouldNotReachHere();
741 }
743 // This check is required on _BIG_ENDIAN
744 Register G5_vminfo = G5_index;
745 __ ldsw(G3_amh_conversion, G5_vminfo);
746 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
748 // Original 32-bit vmdata word must be of this form:
749 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
750 __ lduw(value, O1_scratch);
751 if (!value_left_justified)
752 __ sll(O1_scratch, G5_vminfo, O1_scratch);
753 Label zero_extend, done;
754 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
755 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
756 __ delayed()->nop();
758 // this path is taken for int->byte, int->short
759 __ sra(O1_scratch, G5_vminfo, O1_scratch);
760 __ ba(false, done);
761 __ delayed()->nop();
763 __ bind(zero_extend);
764 // this is taken for int->char
765 __ srl(O1_scratch, G5_vminfo, O1_scratch);
767 __ bind(done);
768 __ st(O1_scratch, vmarg);
770 // Get the new MH:
771 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
772 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
773 }
774 break;
776 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
777 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
778 {
779 // Perform an in-place int-to-long or ref-to-long conversion.
780 __ ldsw(G3_amh_vmargslot, O0_argslot);
782 // On big-endian machine we duplicate the slot and store the MSW
783 // in the first slot.
784 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
786 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
788 Address arg_lsw(O0_argslot, 0);
789 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
791 switch (ek) {
792 case _adapter_opt_i2l:
793 {
794 __ ldsw(arg_lsw, O2_scratch); // Load LSW
795 #ifndef _LP64
796 __ signx(O2_scratch, O3_scratch); // Sign extend
797 #endif
798 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
799 }
800 break;
801 case _adapter_opt_unboxl:
802 {
803 // Load the value up from the heap.
804 __ ld_ptr(arg_lsw, O1_scratch);
805 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
806 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
807 __ null_check(O1_scratch, value_offset);
808 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
809 __ st_long(O2_scratch, arg_msw);
810 }
811 break;
812 default:
813 ShouldNotReachHere();
814 }
816 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
817 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
818 }
819 break;
821 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
822 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
823 {
824 // perform an in-place floating primitive conversion
825 __ unimplemented(entry_name(ek));
826 }
827 break;
829 case _adapter_prim_to_ref:
830 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
831 break;
833 case _adapter_swap_args:
834 case _adapter_rot_args:
835 // handled completely by optimized cases
836 __ stop("init_AdapterMethodHandle should not issue this");
837 break;
839 case _adapter_opt_swap_1:
840 case _adapter_opt_swap_2:
841 case _adapter_opt_rot_1_up:
842 case _adapter_opt_rot_1_down:
843 case _adapter_opt_rot_2_up:
844 case _adapter_opt_rot_2_down:
845 {
846 int swap_bytes = 0, rotate = 0;
847 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
849 // 'argslot' is the position of the first argument to swap.
850 __ ldsw(G3_amh_vmargslot, O0_argslot);
851 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
853 // 'vminfo' is the second.
854 Register O1_destslot = O1_scratch;
855 __ ldsw(G3_amh_conversion, O1_destslot);
856 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
857 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
858 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
860 if (!rotate) {
861 for (int i = 0; i < swap_bytes; i += wordSize) {
862 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
863 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
864 __ st_ptr(O3_scratch, Address(O0_argslot, i));
865 __ st_ptr(O2_scratch, Address(O1_destslot, i));
866 }
867 } else {
868 // Save the first chunk, which is going to get overwritten.
869 switch (swap_bytes) {
870 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
871 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
872 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
873 default: ShouldNotReachHere();
874 }
876 if (rotate > 0) {
877 // Rorate upward.
878 __ sub(O0_argslot, swap_bytes, O0_argslot);
879 #if ASSERT
880 {
881 // Verify that argslot > destslot, by at least swap_bytes.
882 Label L_ok;
883 __ cmp(O0_argslot, O1_destslot);
884 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
885 __ delayed()->nop();
886 __ stop("source must be above destination (upward rotation)");
887 __ bind(L_ok);
888 }
889 #endif
890 // Work argslot down to destslot, copying contiguous data upwards.
891 // Pseudo-code:
892 // argslot = src_addr - swap_bytes
893 // destslot = dest_addr
894 // while (argslot >= destslot) {
895 // *(argslot + swap_bytes) = *(argslot + 0);
896 // argslot--;
897 // }
898 Label loop;
899 __ bind(loop);
900 __ ld_ptr(Address(O0_argslot, 0), G5_index);
901 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
902 __ sub(O0_argslot, wordSize, O0_argslot);
903 __ cmp(O0_argslot, O1_destslot);
904 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
905 __ delayed()->nop(); // FILLME
906 } else {
907 __ add(O0_argslot, swap_bytes, O0_argslot);
908 #if ASSERT
909 {
910 // Verify that argslot < destslot, by at least swap_bytes.
911 Label L_ok;
912 __ cmp(O0_argslot, O1_destslot);
913 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
914 __ delayed()->nop();
915 __ stop("source must be above destination (upward rotation)");
916 __ bind(L_ok);
917 }
918 #endif
919 // Work argslot up to destslot, copying contiguous data downwards.
920 // Pseudo-code:
921 // argslot = src_addr + swap_bytes
922 // destslot = dest_addr
923 // while (argslot >= destslot) {
924 // *(argslot - swap_bytes) = *(argslot + 0);
925 // argslot++;
926 // }
927 Label loop;
928 __ bind(loop);
929 __ ld_ptr(Address(O0_argslot, 0), G5_index);
930 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
931 __ add(O0_argslot, wordSize, O0_argslot);
932 __ cmp(O0_argslot, O1_destslot);
933 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
934 __ delayed()->nop(); // FILLME
935 }
937 // Store the original first chunk into the destination slot, now free.
938 switch (swap_bytes) {
939 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
940 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
941 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
942 default: ShouldNotReachHere();
943 }
944 }
946 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
947 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
948 }
949 break;
951 case _adapter_dup_args:
952 {
953 // 'argslot' is the position of the first argument to duplicate.
954 __ ldsw(G3_amh_vmargslot, O0_argslot);
955 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
957 // 'stack_move' is negative number of words to duplicate.
958 Register G5_stack_move = G5_index;
959 __ ldsw(G3_amh_conversion, G5_stack_move);
960 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
962 // Remember the old Gargs (argslot[0]).
963 Register O1_oldarg = O1_scratch;
964 __ mov(Gargs, O1_oldarg);
966 // Move Gargs down to make room for dups.
967 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
968 __ add(Gargs, G5_stack_move, Gargs);
970 // Compute the new Gargs (argslot[0]).
971 Register O2_newarg = O2_scratch;
972 __ mov(Gargs, O2_newarg);
974 // Copy from oldarg[0...] down to newarg[0...]
975 // Pseude-code:
976 // O1_oldarg = old-Gargs
977 // O2_newarg = new-Gargs
978 // O0_argslot = argslot
979 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
980 Label loop;
981 __ bind(loop);
982 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
983 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
984 __ add(O0_argslot, wordSize, O0_argslot);
985 __ add(O2_newarg, wordSize, O2_newarg);
986 __ cmp(O2_newarg, O1_oldarg);
987 __ brx(Assembler::less, false, Assembler::pt, loop);
988 __ delayed()->nop(); // FILLME
990 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
991 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
992 }
993 break;
995 case _adapter_drop_args:
996 {
997 // 'argslot' is the position of the first argument to nuke.
998 __ ldsw(G3_amh_vmargslot, O0_argslot);
999 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
1001 // 'stack_move' is number of words to drop.
1002 Register G5_stack_move = G5_index;
1003 __ ldsw(G3_amh_conversion, G5_stack_move);
1004 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
1006 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
1008 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
1009 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
1010 }
1011 break;
1013 case _adapter_collect_args:
1014 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1015 break;
1017 case _adapter_spread_args:
1018 // Handled completely by optimized cases.
1019 __ stop("init_AdapterMethodHandle should not issue this");
1020 break;
1022 case _adapter_opt_spread_0:
1023 case _adapter_opt_spread_1:
1024 case _adapter_opt_spread_more:
1025 {
1026 // spread an array out into a group of arguments
1027 __ unimplemented(entry_name(ek));
1028 }
1029 break;
1031 case _adapter_flyby:
1032 case _adapter_ricochet:
1033 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1034 break;
1036 default:
1037 ShouldNotReachHere();
1038 }
1040 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
1041 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
1043 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
1044 }