Mercurial > jdk8-mips64-public > hotspot / file revision
src/cpu/sparc/vm/methodHandles_sparc.cpp@c393f046f4c5
src/cpu/sparc/vm/methodHandles_sparc.cpp
Tue, 12 Oct 2010 23:51:20 -0700
- author
- iveresov
- date
- Tue, 12 Oct 2010 23:51:20 -0700
- changeset 2203
- c393f046f4c5
- parent 2201
- d55217dc206f
- child 2204
- 5beba6174298
- permissions
- -rw-r--r--
6991512: G1 barriers fail with 64bit C1
Summary: Fix compare-and-swap intrinsic problem with G1 post-barriers and issue with branch ranges in G1 stubs on sparc
Reviewed-by: never, kvn
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 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_methodHandles_sparc.cpp.incl"
28 #define __ _masm->
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 }
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);
47 return (address) me;
48 }
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");
55 // Fill in the real end_address:
56 __ align(wordSize);
57 me->set_end_address(__ pc());
59 return me;
60 }
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;
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();
79 // here's where control starts out:
80 __ align(CodeEntryAlignment);
81 address entry_point = __ pc();
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 }
92 // given the MethodType, find out where the MH argument is buried
93 __ load_heap_oop(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);
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);
100 return entry_point;
101 }
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
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()));
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
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
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);
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);
185 __ mov(Gargs, temp_reg); // source pointer for copy
186 __ add(Gargs, offset, Gargs);
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 }
200 // Now move the argslot down, to point to the opened-up space.
201 __ add(argslot_reg, offset, argslot_reg);
202 }
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()));
215 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
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
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 }
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);
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 }
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
288 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
289 print_method_handle(mh);
290 }
291 #endif // PRODUCT
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 }
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)
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;
327 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
329 // Some handy addresses:
330 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
332 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
334 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
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());
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());
343 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
345 if (have_entry(ek)) {
346 __ nop(); // empty stubs make SG sick
347 return;
348 }
350 address interp_entry = __ pc();
352 #ifndef PRODUCT
353 if (TraceMethodHandles) {
354 // save: Gargs, O5_savedSP
355 __ save(SP, -16*wordSize, SP);
356 __ set((intptr_t) entry_name(ek), O0);
357 __ mov(G3_method_handle, O1);
358 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
359 __ restore(SP, 16*wordSize, SP);
360 }
361 #endif // PRODUCT
363 switch ((int) ek) {
364 case _raise_exception:
365 {
366 // Not a real MH entry, but rather shared code for raising an
367 // exception. Extra local arguments are passed in scratch
368 // registers, as required type in O3, failing object (or NULL)
369 // in O2, failing bytecode type in O1.
371 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
373 // Push arguments as if coming from the interpreter.
374 Register O0_scratch = O0_argslot;
375 int stackElementSize = Interpreter::stackElementSize;
377 // Make space on the stack for the arguments and set Gargs
378 // correctly.
379 __ sub(SP, 4*stackElementSize, SP); // Keep stack aligned.
380 __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs);
382 // void raiseException(int code, Object actual, Object required)
383 __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code
384 __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual
385 __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required
387 Label no_method;
388 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
389 __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
390 __ ld_ptr(Address(G5_method, 0), G5_method);
391 __ tst(G5_method);
392 __ brx(Assembler::zero, false, Assembler::pn, no_method);
393 __ delayed()->nop();
395 int jobject_oop_offset = 0;
396 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
397 __ tst(G5_method);
398 __ brx(Assembler::zero, false, Assembler::pn, no_method);
399 __ delayed()->nop();
401 __ verify_oop(G5_method);
402 __ jump_indirect_to(G5_method_fie, O1_scratch);
403 __ delayed()->nop();
405 // If we get here, the Java runtime did not do its job of creating the exception.
406 // Do something that is at least causes a valid throw from the interpreter.
407 __ bind(no_method);
408 __ unimplemented("_raise_exception no method");
409 }
410 break;
412 case _invokestatic_mh:
413 case _invokespecial_mh:
414 {
415 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
416 __ verify_oop(G5_method);
417 // Same as TemplateTable::invokestatic or invokespecial,
418 // minus the CP setup and profiling:
419 if (ek == _invokespecial_mh) {
420 // Must load & check the first argument before entering the target method.
421 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
422 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
423 __ null_check(G3_method_handle);
424 __ verify_oop(G3_method_handle);
425 }
426 __ jump_indirect_to(G5_method_fie, O1_scratch);
427 __ delayed()->nop();
428 }
429 break;
431 case _invokevirtual_mh:
432 {
433 // Same as TemplateTable::invokevirtual,
434 // minus the CP setup and profiling:
436 // Pick out the vtable index and receiver offset from the MH,
437 // and then we can discard it:
438 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
439 __ ldsw(G3_dmh_vmindex, G5_index);
440 // Note: The verifier allows us to ignore G3_mh_vmtarget.
441 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
442 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
444 // Get receiver klass:
445 Register O0_klass = O0_argslot;
446 __ load_klass(G3_method_handle, O0_klass);
447 __ verify_oop(O0_klass);
449 // Get target methodOop & entry point:
450 const int base = instanceKlass::vtable_start_offset() * wordSize;
451 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
453 __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
454 __ add(O0_klass, G5_index, O0_klass);
455 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
456 __ ld_ptr(vtable_entry_addr, G5_method);
458 __ verify_oop(G5_method);
459 __ jump_indirect_to(G5_method_fie, O1_scratch);
460 __ delayed()->nop();
461 }
462 break;
464 case _invokeinterface_mh:
465 {
466 // Same as TemplateTable::invokeinterface,
467 // minus the CP setup and profiling:
468 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
469 Register O1_intf = O1_scratch;
470 __ load_heap_oop(G3_mh_vmtarget, O1_intf);
471 __ ldsw(G3_dmh_vmindex, G5_index);
472 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
473 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
475 // Get receiver klass:
476 Register O0_klass = O0_argslot;
477 __ load_klass(G3_method_handle, O0_klass);
478 __ verify_oop(O0_klass);
480 // Get interface:
481 Label no_such_interface;
482 __ verify_oop(O1_intf);
483 __ lookup_interface_method(O0_klass, O1_intf,
484 // Note: next two args must be the same:
485 G5_index, G5_method,
486 O2_scratch,
487 O3_scratch,
488 no_such_interface);
490 __ verify_oop(G5_method);
491 __ jump_indirect_to(G5_method_fie, O1_scratch);
492 __ delayed()->nop();
494 __ bind(no_such_interface);
495 // Throw an exception.
496 // For historical reasons, it will be IncompatibleClassChangeError.
497 __ unimplemented("not tested yet");
498 __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface
499 __ mov(O0_klass, O2_scratch); // bad receiver
500 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
501 __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining?
502 }
503 break;
505 case _bound_ref_mh:
506 case _bound_int_mh:
507 case _bound_long_mh:
508 case _bound_ref_direct_mh:
509 case _bound_int_direct_mh:
510 case _bound_long_direct_mh:
511 {
512 const bool direct_to_method = (ek >= _bound_ref_direct_mh);
513 BasicType arg_type = T_ILLEGAL;
514 int arg_mask = _INSERT_NO_MASK;
515 int arg_slots = -1;
516 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
518 // Make room for the new argument:
519 __ ldsw(G3_bmh_vmargslot, O0_argslot);
520 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
522 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
524 // Store bound argument into the new stack slot:
525 __ load_heap_oop(G3_bmh_argument, O1_scratch);
526 if (arg_type == T_OBJECT) {
527 __ st_ptr(O1_scratch, Address(O0_argslot, 0));
528 } else {
529 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
530 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type));
531 if (arg_slots == 2) {
532 __ unimplemented("not yet tested");
533 #ifndef _LP64
534 __ signx(O2_scratch, O3_scratch); // Sign extend
535 #endif
536 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64
537 } else {
538 __ st_ptr( O2_scratch, Address(O0_argslot, 0));
539 }
540 }
542 if (direct_to_method) {
543 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop
544 __ verify_oop(G5_method);
545 __ jump_indirect_to(G5_method_fie, O1_scratch);
546 __ delayed()->nop();
547 } else {
548 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
549 __ verify_oop(G3_method_handle);
550 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
551 }
552 }
553 break;
555 case _adapter_retype_only:
556 case _adapter_retype_raw:
557 // Immediately jump to the next MH layer:
558 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
559 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
560 // This is OK when all parameter types widen.
561 // It is also OK when a return type narrows.
562 break;
564 case _adapter_check_cast:
565 {
566 // Temps:
567 Register G5_klass = G5_index; // Interesting AMH data.
569 // Check a reference argument before jumping to the next layer of MH:
570 __ ldsw(G3_amh_vmargslot, O0_argslot);
571 Address vmarg = __ argument_address(O0_argslot);
573 // What class are we casting to?
574 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object!
575 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
577 Label done;
578 __ ld_ptr(vmarg, O1_scratch);
579 __ tst(O1_scratch);
580 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
581 __ delayed()->nop();
582 __ load_klass(O1_scratch, O1_scratch);
584 // Live at this point:
585 // - G5_klass : klass required by the target method
586 // - O1_scratch : argument klass to test
587 // - G3_method_handle: adapter method handle
588 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
590 // If we get here, the type check failed!
591 __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field
592 __ load_heap_oop(G3_amh_argument, O3_scratch); // required class
593 __ ld_ptr(vmarg, O2_scratch); // bad object
594 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
595 __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining?
597 __ bind(done);
598 // Get the new MH:
599 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
600 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
601 }
602 break;
604 case _adapter_prim_to_prim:
605 case _adapter_ref_to_prim:
606 // Handled completely by optimized cases.
607 __ stop("init_AdapterMethodHandle should not issue this");
608 break;
610 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
611 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
612 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
613 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
614 {
615 // Perform an in-place conversion to int or an int subword.
616 __ ldsw(G3_amh_vmargslot, O0_argslot);
617 Address vmarg = __ argument_address(O0_argslot);
618 Address value;
619 bool value_left_justified = false;
621 switch (ek) {
622 case _adapter_opt_i2i:
623 case _adapter_opt_l2i:
624 __ unimplemented(entry_name(ek));
625 value = vmarg;
626 break;
627 case _adapter_opt_unboxi:
628 {
629 // Load the value up from the heap.
630 __ ld_ptr(vmarg, O1_scratch);
631 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
632 #ifdef ASSERT
633 for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
634 if (is_subword_type(BasicType(bt)))
635 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
636 }
637 #endif
638 __ null_check(O1_scratch, value_offset);
639 value = Address(O1_scratch, value_offset);
640 #ifdef _BIG_ENDIAN
641 // Values stored in objects are packed.
642 value_left_justified = true;
643 #endif
644 }
645 break;
646 default:
647 ShouldNotReachHere();
648 }
650 // This check is required on _BIG_ENDIAN
651 Register G5_vminfo = G5_index;
652 __ ldsw(G3_amh_conversion, G5_vminfo);
653 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
655 // Original 32-bit vmdata word must be of this form:
656 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
657 __ lduw(value, O1_scratch);
658 if (!value_left_justified)
659 __ sll(O1_scratch, G5_vminfo, O1_scratch);
660 Label zero_extend, done;
661 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
662 __ br(Assembler::zero, false, Assembler::pn, zero_extend);
663 __ delayed()->nop();
665 // this path is taken for int->byte, int->short
666 __ sra(O1_scratch, G5_vminfo, O1_scratch);
667 __ ba(false, done);
668 __ delayed()->nop();
670 __ bind(zero_extend);
671 // this is taken for int->char
672 __ srl(O1_scratch, G5_vminfo, O1_scratch);
674 __ bind(done);
675 __ st(O1_scratch, vmarg);
677 // Get the new MH:
678 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
679 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
680 }
681 break;
683 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
684 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
685 {
686 // Perform an in-place int-to-long or ref-to-long conversion.
687 __ ldsw(G3_amh_vmargslot, O0_argslot);
689 // On big-endian machine we duplicate the slot and store the MSW
690 // in the first slot.
691 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
693 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
695 Address arg_lsw(O0_argslot, 0);
696 Address arg_msw(O0_argslot, -Interpreter::stackElementSize);
698 switch (ek) {
699 case _adapter_opt_i2l:
700 {
701 __ ldsw(arg_lsw, O2_scratch); // Load LSW
702 #ifndef _LP64
703 __ signx(O2_scratch, O3_scratch); // Sign extend
704 #endif
705 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
706 }
707 break;
708 case _adapter_opt_unboxl:
709 {
710 // Load the value up from the heap.
711 __ ld_ptr(arg_lsw, O1_scratch);
712 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
713 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
714 __ null_check(O1_scratch, value_offset);
715 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
716 __ st_long(O2_scratch, arg_msw);
717 }
718 break;
719 default:
720 ShouldNotReachHere();
721 }
723 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
724 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
725 }
726 break;
728 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
729 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
730 {
731 // perform an in-place floating primitive conversion
732 __ unimplemented(entry_name(ek));
733 }
734 break;
736 case _adapter_prim_to_ref:
737 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
738 break;
740 case _adapter_swap_args:
741 case _adapter_rot_args:
742 // handled completely by optimized cases
743 __ stop("init_AdapterMethodHandle should not issue this");
744 break;
746 case _adapter_opt_swap_1:
747 case _adapter_opt_swap_2:
748 case _adapter_opt_rot_1_up:
749 case _adapter_opt_rot_1_down:
750 case _adapter_opt_rot_2_up:
751 case _adapter_opt_rot_2_down:
752 {
753 int swap_bytes = 0, rotate = 0;
754 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
756 // 'argslot' is the position of the first argument to swap.
757 __ ldsw(G3_amh_vmargslot, O0_argslot);
758 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
760 // 'vminfo' is the second.
761 Register O1_destslot = O1_scratch;
762 __ ldsw(G3_amh_conversion, O1_destslot);
763 assert(CONV_VMINFO_SHIFT == 0, "preshifted");
764 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
765 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
767 if (!rotate) {
768 for (int i = 0; i < swap_bytes; i += wordSize) {
769 __ ld_ptr(Address(O0_argslot, i), O2_scratch);
770 __ ld_ptr(Address(O1_destslot, i), O3_scratch);
771 __ st_ptr(O3_scratch, Address(O0_argslot, i));
772 __ st_ptr(O2_scratch, Address(O1_destslot, i));
773 }
774 } else {
775 // Save the first chunk, which is going to get overwritten.
776 switch (swap_bytes) {
777 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
778 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
779 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
780 default: ShouldNotReachHere();
781 }
783 if (rotate > 0) {
784 // Rorate upward.
785 __ sub(O0_argslot, swap_bytes, O0_argslot);
786 #if ASSERT
787 {
788 // Verify that argslot > destslot, by at least swap_bytes.
789 Label L_ok;
790 __ cmp(O0_argslot, O1_destslot);
791 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
792 __ delayed()->nop();
793 __ stop("source must be above destination (upward rotation)");
794 __ bind(L_ok);
795 }
796 #endif
797 // Work argslot down to destslot, copying contiguous data upwards.
798 // Pseudo-code:
799 // argslot = src_addr - swap_bytes
800 // destslot = dest_addr
801 // while (argslot >= destslot) {
802 // *(argslot + swap_bytes) = *(argslot + 0);
803 // argslot--;
804 // }
805 Label loop;
806 __ bind(loop);
807 __ ld_ptr(Address(O0_argslot, 0), G5_index);
808 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
809 __ sub(O0_argslot, wordSize, O0_argslot);
810 __ cmp(O0_argslot, O1_destslot);
811 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
812 __ delayed()->nop(); // FILLME
813 } else {
814 __ add(O0_argslot, swap_bytes, O0_argslot);
815 #if ASSERT
816 {
817 // Verify that argslot < destslot, by at least swap_bytes.
818 Label L_ok;
819 __ cmp(O0_argslot, O1_destslot);
820 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
821 __ delayed()->nop();
822 __ stop("source must be above destination (upward rotation)");
823 __ bind(L_ok);
824 }
825 #endif
826 // Work argslot up to destslot, copying contiguous data downwards.
827 // Pseudo-code:
828 // argslot = src_addr + swap_bytes
829 // destslot = dest_addr
830 // while (argslot >= destslot) {
831 // *(argslot - swap_bytes) = *(argslot + 0);
832 // argslot++;
833 // }
834 Label loop;
835 __ bind(loop);
836 __ ld_ptr(Address(O0_argslot, 0), G5_index);
837 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
838 __ add(O0_argslot, wordSize, O0_argslot);
839 __ cmp(O0_argslot, O1_destslot);
840 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
841 __ delayed()->nop(); // FILLME
842 }
844 // Store the original first chunk into the destination slot, now free.
845 switch (swap_bytes) {
846 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
847 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
848 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
849 default: ShouldNotReachHere();
850 }
851 }
853 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
854 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
855 }
856 break;
858 case _adapter_dup_args:
859 {
860 // 'argslot' is the position of the first argument to duplicate.
861 __ ldsw(G3_amh_vmargslot, O0_argslot);
862 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
864 // 'stack_move' is negative number of words to duplicate.
865 Register G5_stack_move = G5_index;
866 __ ldsw(G3_amh_conversion, G5_stack_move);
867 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
869 // Remember the old Gargs (argslot[0]).
870 Register O1_oldarg = O1_scratch;
871 __ mov(Gargs, O1_oldarg);
873 // Move Gargs down to make room for dups.
874 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
875 __ add(Gargs, G5_stack_move, Gargs);
877 // Compute the new Gargs (argslot[0]).
878 Register O2_newarg = O2_scratch;
879 __ mov(Gargs, O2_newarg);
881 // Copy from oldarg[0...] down to newarg[0...]
882 // Pseude-code:
883 // O1_oldarg = old-Gargs
884 // O2_newarg = new-Gargs
885 // O0_argslot = argslot
886 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
887 Label loop;
888 __ bind(loop);
889 __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
890 __ st_ptr(O3_scratch, Address(O2_newarg, 0));
891 __ add(O0_argslot, wordSize, O0_argslot);
892 __ add(O2_newarg, wordSize, O2_newarg);
893 __ cmp(O2_newarg, O1_oldarg);
894 __ brx(Assembler::less, false, Assembler::pt, loop);
895 __ delayed()->nop(); // FILLME
897 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
898 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
899 }
900 break;
902 case _adapter_drop_args:
903 {
904 // 'argslot' is the position of the first argument to nuke.
905 __ ldsw(G3_amh_vmargslot, O0_argslot);
906 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
908 // 'stack_move' is number of words to drop.
909 Register G5_stack_move = G5_index;
910 __ ldsw(G3_amh_conversion, G5_stack_move);
911 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
913 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
915 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);
916 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
917 }
918 break;
920 case _adapter_collect_args:
921 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
922 break;
924 case _adapter_spread_args:
925 // Handled completely by optimized cases.
926 __ stop("init_AdapterMethodHandle should not issue this");
927 break;
929 case _adapter_opt_spread_0:
930 case _adapter_opt_spread_1:
931 case _adapter_opt_spread_more:
932 {
933 // spread an array out into a group of arguments
934 __ unimplemented(entry_name(ek));
935 }
936 break;
938 case _adapter_flyby:
939 case _adapter_ricochet:
940 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
941 break;
943 default:
944 ShouldNotReachHere();
945 }
947 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
948 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
950 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
951 }
