1 /*
2 * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/assembler.hpp"
28 #include "c1/c1_CodeStubs.hpp"
29 #include "c1/c1_Compilation.hpp"
30 #include "c1/c1_LIRAssembler.hpp"
31 #include "c1/c1_MacroAssembler.hpp"
32 #include "c1/c1_Runtime1.hpp"
33 #include "c1/c1_ValueStack.hpp"
34 #include "ci/ciArrayKlass.hpp"
35 #include "ci/ciInstance.hpp"
36 #include "gc/shared/barrierSet.hpp"
37 #include "gc/shared/cardTableBarrierSet.hpp"
38 #include "gc/shared/collectedHeap.hpp"
39 #include "nativeInst_aarch64.hpp"
40 #include "oops/objArrayKlass.hpp"
41 #include "runtime/frame.inline.hpp"
42 #include "runtime/sharedRuntime.hpp"
43 #include "vmreg_aarch64.inline.hpp"
44
45
46
47 #ifndef PRODUCT
48 #define COMMENT(x) do { __ block_comment(x); } while (0)
49 #else
50 #define COMMENT(x)
51 #endif
52
53 NEEDS_CLEANUP // remove this definitions ?
54 const Register IC_Klass = rscratch2; // where the IC klass is cached
55 const Register SYNC_header = r0; // synchronization header
56 const Register SHIFT_count = r0; // where count for shift operations must be
57
58 #define __ _masm->
59
60
61 static void select_different_registers(Register preserve,
62 Register extra,
63 Register &tmp1,
64 Register &tmp2) {
65 if (tmp1 == preserve) {
66 assert_different_registers(tmp1, tmp2, extra);
67 tmp1 = extra;
68 } else if (tmp2 == preserve) {
69 assert_different_registers(tmp1, tmp2, extra);
70 tmp2 = extra;
71 }
72 assert_different_registers(preserve, tmp1, tmp2);
73 }
74
75
76
77 static void select_different_registers(Register preserve,
78 Register extra,
79 Register &tmp1,
80 Register &tmp2,
81 Register &tmp3) {
82 if (tmp1 == preserve) {
83 assert_different_registers(tmp1, tmp2, tmp3, extra);
84 tmp1 = extra;
85 } else if (tmp2 == preserve) {
86 assert_different_registers(tmp1, tmp2, tmp3, extra);
87 tmp2 = extra;
88 } else if (tmp3 == preserve) {
89 assert_different_registers(tmp1, tmp2, tmp3, extra);
90 tmp3 = extra;
91 }
92 assert_different_registers(preserve, tmp1, tmp2, tmp3);
93 }
94
95
96 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { Unimplemented(); return false; }
97
98
99 LIR_Opr LIR_Assembler::receiverOpr() {
100 return FrameMap::receiver_opr;
101 }
102
103 LIR_Opr LIR_Assembler::osrBufferPointer() {
104 return FrameMap::as_pointer_opr(receiverOpr()->as_register());
105 }
106
107 //--------------fpu register translations-----------------------
108
109
110 address LIR_Assembler::float_constant(float f) {
111 address const_addr = __ float_constant(f);
112 if (const_addr == NULL) {
113 bailout("const section overflow");
114 return __ code()->consts()->start();
115 } else {
116 return const_addr;
117 }
118 }
119
120
121 address LIR_Assembler::double_constant(double d) {
122 address const_addr = __ double_constant(d);
123 if (const_addr == NULL) {
124 bailout("const section overflow");
125 return __ code()->consts()->start();
126 } else {
127 return const_addr;
128 }
129 }
130
131 address LIR_Assembler::int_constant(jlong n) {
132 address const_addr = __ long_constant(n);
133 if (const_addr == NULL) {
134 bailout("const section overflow");
135 return __ code()->consts()->start();
136 } else {
137 return const_addr;
138 }
139 }
140
141 void LIR_Assembler::set_24bit_FPU() { Unimplemented(); }
142
143 void LIR_Assembler::reset_FPU() { Unimplemented(); }
144
145 void LIR_Assembler::fpop() { Unimplemented(); }
146
147 void LIR_Assembler::fxch(int i) { Unimplemented(); }
148
149 void LIR_Assembler::fld(int i) { Unimplemented(); }
150
151 void LIR_Assembler::ffree(int i) { Unimplemented(); }
152
153 void LIR_Assembler::breakpoint() { Unimplemented(); }
154
155 void LIR_Assembler::push(LIR_Opr opr) { Unimplemented(); }
156
157 void LIR_Assembler::pop(LIR_Opr opr) { Unimplemented(); }
158
159 bool LIR_Assembler::is_literal_address(LIR_Address* addr) { Unimplemented(); return false; }
160 //-------------------------------------------
161
162 static Register as_reg(LIR_Opr op) {
163 return op->is_double_cpu() ? op->as_register_lo() : op->as_register();
164 }
165
166 static jlong as_long(LIR_Opr data) {
167 jlong result;
168 switch (data->type()) {
169 case T_INT:
170 result = (data->as_jint());
171 break;
172 case T_LONG:
173 result = (data->as_jlong());
174 break;
175 default:
176 ShouldNotReachHere();
177 result = 0; // unreachable
178 }
179 return result;
180 }
181
182 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) {
183 Register base = addr->base()->as_pointer_register();
184 LIR_Opr opr = addr->index();
185 if (opr->is_cpu_register()) {
186 Register index;
187 if (opr->is_single_cpu())
188 index = opr->as_register();
189 else
190 index = opr->as_register_lo();
191 assert(addr->disp() == 0, "must be");
192 switch(opr->type()) {
193 case T_INT:
194 return Address(base, index, Address::sxtw(addr->scale()));
195 case T_LONG:
196 return Address(base, index, Address::lsl(addr->scale()));
197 default:
198 ShouldNotReachHere();
199 }
200 } else {
201 intptr_t addr_offset = intptr_t(addr->disp());
202 if (Address::offset_ok_for_immed(addr_offset, addr->scale()))
203 return Address(base, addr_offset, Address::lsl(addr->scale()));
204 else {
205 __ mov(tmp, addr_offset);
206 return Address(base, tmp, Address::lsl(addr->scale()));
207 }
208 }
209 return Address();
210 }
211
212 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) {
213 ShouldNotReachHere();
214 return Address();
215 }
216
217 Address LIR_Assembler::as_Address(LIR_Address* addr) {
218 return as_Address(addr, rscratch1);
219 }
220
221 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) {
222 return as_Address(addr, rscratch1); // Ouch
223 // FIXME: This needs to be much more clever. See x86.
224 }
225
226
227 void LIR_Assembler::osr_entry() {
228 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset());
229 BlockBegin* osr_entry = compilation()->hir()->osr_entry();
230 ValueStack* entry_state = osr_entry->state();
231 int number_of_locks = entry_state->locks_size();
232
233 // we jump here if osr happens with the interpreter
234 // state set up to continue at the beginning of the
235 // loop that triggered osr - in particular, we have
236 // the following registers setup:
237 //
238 // r2: osr buffer
239 //
240
241 // build frame
242 ciMethod* m = compilation()->method();
243 __ build_frame(initial_frame_size_in_bytes(), bang_size_in_bytes());
244
245 // OSR buffer is
246 //
247 // locals[nlocals-1..0]
248 // monitors[0..number_of_locks]
249 //
250 // locals is a direct copy of the interpreter frame so in the osr buffer
251 // so first slot in the local array is the last local from the interpreter
252 // and last slot is local[0] (receiver) from the interpreter
253 //
254 // Similarly with locks. The first lock slot in the osr buffer is the nth lock
255 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock
256 // in the interpreter frame (the method lock if a sync method)
257
258 // Initialize monitors in the compiled activation.
259 // r2: pointer to osr buffer
260 //
261 // All other registers are dead at this point and the locals will be
262 // copied into place by code emitted in the IR.
263
264 Register OSR_buf = osrBufferPointer()->as_pointer_register();
265 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
266 int monitor_offset = BytesPerWord * method()->max_locals() +
267 (2 * BytesPerWord) * (number_of_locks - 1);
268 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in
269 // the OSR buffer using 2 word entries: first the lock and then
270 // the oop.
271 for (int i = 0; i < number_of_locks; i++) {
272 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord);
273 #ifdef ASSERT
274 // verify the interpreter's monitor has a non-null object
275 {
276 Label L;
277 __ ldr(rscratch1, Address(OSR_buf, slot_offset + 1*BytesPerWord));
278 __ cbnz(rscratch1, L);
279 __ stop("locked object is NULL");
280 __ bind(L);
281 }
282 #endif
283 __ ldr(r19, Address(OSR_buf, slot_offset + 0));
284 __ str(r19, frame_map()->address_for_monitor_lock(i));
285 __ ldr(r19, Address(OSR_buf, slot_offset + 1*BytesPerWord));
286 __ str(r19, frame_map()->address_for_monitor_object(i));
287 }
288 }
289 }
290
291
292 // inline cache check; done before the frame is built.
293 int LIR_Assembler::check_icache() {
294 Register receiver = FrameMap::receiver_opr->as_register();
295 Register ic_klass = IC_Klass;
296 int start_offset = __ offset();
297 __ inline_cache_check(receiver, ic_klass);
298
299 // if icache check fails, then jump to runtime routine
300 // Note: RECEIVER must still contain the receiver!
301 Label dont;
302 __ br(Assembler::EQ, dont);
303 __ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
304
305 // We align the verified entry point unless the method body
306 // (including its inline cache check) will fit in a single 64-byte
307 // icache line.
308 if (! method()->is_accessor() || __ offset() - start_offset > 4 * 4) {
309 // force alignment after the cache check.
310 __ align(CodeEntryAlignment);
311 }
312
313 __ bind(dont);
314 return start_offset;
315 }
316
317
318 void LIR_Assembler::jobject2reg(jobject o, Register reg) {
319 if (o == NULL) {
320 __ mov(reg, zr);
321 } else {
322 __ movoop(reg, o, /*immediate*/true);
323 }
324 }
325
326 void LIR_Assembler::deoptimize_trap(CodeEmitInfo *info) {
327 address target = NULL;
328 relocInfo::relocType reloc_type = relocInfo::none;
329
330 switch (patching_id(info)) {
331 case PatchingStub::access_field_id:
332 target = Runtime1::entry_for(Runtime1::access_field_patching_id);
333 reloc_type = relocInfo::section_word_type;
334 break;
335 case PatchingStub::load_klass_id:
336 target = Runtime1::entry_for(Runtime1::load_klass_patching_id);
337 reloc_type = relocInfo::metadata_type;
338 break;
339 case PatchingStub::load_mirror_id:
340 target = Runtime1::entry_for(Runtime1::load_mirror_patching_id);
341 reloc_type = relocInfo::oop_type;
342 break;
343 case PatchingStub::load_appendix_id:
344 target = Runtime1::entry_for(Runtime1::load_appendix_patching_id);
345 reloc_type = relocInfo::oop_type;
346 break;
347 default: ShouldNotReachHere();
348 }
349
350 __ far_call(RuntimeAddress(target));
351 add_call_info_here(info);
352 }
353
354 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo *info) {
355 deoptimize_trap(info);
356 }
357
358
359 // This specifies the rsp decrement needed to build the frame
360 int LIR_Assembler::initial_frame_size_in_bytes() const {
361 // if rounding, must let FrameMap know!
362
363 // The frame_map records size in slots (32bit word)
364
365 // subtract two words to account for return address and link
366 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size;
367 }
368
369
370 int LIR_Assembler::emit_exception_handler() {
371 // if the last instruction is a call (typically to do a throw which
372 // is coming at the end after block reordering) the return address
373 // must still point into the code area in order to avoid assertion
374 // failures when searching for the corresponding bci => add a nop
375 // (was bug 5/14/1999 - gri)
376 __ nop();
377
378 // generate code for exception handler
379 address handler_base = __ start_a_stub(exception_handler_size());
380 if (handler_base == NULL) {
381 // not enough space left for the handler
382 bailout("exception handler overflow");
383 return -1;
384 }
385
386 int offset = code_offset();
387
388 // the exception oop and pc are in r0, and r3
389 // no other registers need to be preserved, so invalidate them
390 __ invalidate_registers(false, true, true, false, true, true);
391
392 // check that there is really an exception
393 __ verify_not_null_oop(r0);
394
395 // search an exception handler (r0: exception oop, r3: throwing pc)
396 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id))); __ should_not_reach_here();
397 guarantee(code_offset() - offset <= exception_handler_size(), "overflow");
398 __ end_a_stub();
399
400 return offset;
401 }
402
403
404 // Emit the code to remove the frame from the stack in the exception
405 // unwind path.
406 int LIR_Assembler::emit_unwind_handler() {
407 #ifndef PRODUCT
408 if (CommentedAssembly) {
409 _masm->block_comment("Unwind handler");
410 }
411 #endif
412
413 int offset = code_offset();
414
415 // Fetch the exception from TLS and clear out exception related thread state
416 __ ldr(r0, Address(rthread, JavaThread::exception_oop_offset()));
417 __ str(zr, Address(rthread, JavaThread::exception_oop_offset()));
418 __ str(zr, Address(rthread, JavaThread::exception_pc_offset()));
419
420 __ bind(_unwind_handler_entry);
421 __ verify_not_null_oop(r0);
422 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
423 __ mov(r19, r0); // Preserve the exception
424 }
425
426 // Preform needed unlocking
427 MonitorExitStub* stub = NULL;
428 if (method()->is_synchronized()) {
429 monitor_address(0, FrameMap::r0_opr);
430 stub = new MonitorExitStub(FrameMap::r0_opr, true, 0);
431 __ unlock_object(r5, r4, r0, *stub->entry());
432 __ bind(*stub->continuation());
433 }
434
435 if (compilation()->env()->dtrace_method_probes()) {
436 __ call_Unimplemented();
437 #if 0
438 __ movptr(Address(rsp, 0), rax);
439 __ mov_metadata(Address(rsp, sizeof(void*)), method()->constant_encoding());
440 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit)));
441 #endif
442 }
443
444 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
445 __ mov(r0, r19); // Restore the exception
446 }
447
448 // remove the activation and dispatch to the unwind handler
449 __ block_comment("remove_frame and dispatch to the unwind handler");
450 __ remove_frame(initial_frame_size_in_bytes());
451 __ far_jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id)));
452
453 // Emit the slow path assembly
454 if (stub != NULL) {
455 stub->emit_code(this);
456 }
457
458 return offset;
459 }
460
461
462 int LIR_Assembler::emit_deopt_handler() {
463 // if the last instruction is a call (typically to do a throw which
464 // is coming at the end after block reordering) the return address
465 // must still point into the code area in order to avoid assertion
466 // failures when searching for the corresponding bci => add a nop
467 // (was bug 5/14/1999 - gri)
468 __ nop();
469
470 // generate code for exception handler
471 address handler_base = __ start_a_stub(deopt_handler_size());
472 if (handler_base == NULL) {
473 // not enough space left for the handler
474 bailout("deopt handler overflow");
475 return -1;
476 }
477
478 int offset = code_offset();
479
480 __ adr(lr, pc());
481 __ far_jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack()));
482 guarantee(code_offset() - offset <= deopt_handler_size(), "overflow");
483 __ end_a_stub();
484
485 return offset;
486 }
487
488 void LIR_Assembler::add_debug_info_for_branch(address adr, CodeEmitInfo* info) {
489 _masm->code_section()->relocate(adr, relocInfo::poll_type);
490 int pc_offset = code_offset();
491 flush_debug_info(pc_offset);
492 info->record_debug_info(compilation()->debug_info_recorder(), pc_offset);
493 if (info->exception_handlers() != NULL) {
494 compilation()->add_exception_handlers_for_pco(pc_offset, info->exception_handlers());
495 }
496 }
497
498 void LIR_Assembler::return_op(LIR_Opr result) {
499 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == r0, "word returns are in r0,");
500
501 // Pop the stack before the safepoint code
502 __ remove_frame(initial_frame_size_in_bytes());
503
504 if (StackReservedPages > 0 && compilation()->has_reserved_stack_access()) {
505 __ reserved_stack_check();
506 }
507
508 address polling_page(os::get_polling_page());
509 __ read_polling_page(rscratch1, polling_page, relocInfo::poll_return_type);
510 __ ret(lr);
511 }
512
513 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
514 address polling_page(os::get_polling_page());
515 guarantee(info != NULL, "Shouldn't be NULL");
516 assert(os::is_poll_address(polling_page), "should be");
517 __ get_polling_page(rscratch1, polling_page, relocInfo::poll_type);
518 add_debug_info_for_branch(info); // This isn't just debug info:
519 // it's the oop map
520 __ read_polling_page(rscratch1, relocInfo::poll_type);
521 return __ offset();
522 }
523
524
525 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) {
526 if (from_reg == r31_sp)
527 from_reg = sp;
528 if (to_reg == r31_sp)
529 to_reg = sp;
530 __ mov(to_reg, from_reg);
531 }
532
533 void LIR_Assembler::swap_reg(Register a, Register b) { Unimplemented(); }
534
535
536 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) {
537 assert(src->is_constant(), "should not call otherwise");
538 assert(dest->is_register(), "should not call otherwise");
539 LIR_Const* c = src->as_constant_ptr();
540
541 switch (c->type()) {
542 case T_INT: {
543 assert(patch_code == lir_patch_none, "no patching handled here");
544 __ movw(dest->as_register(), c->as_jint());
545 break;
546 }
547
548 case T_ADDRESS: {
549 assert(patch_code == lir_patch_none, "no patching handled here");
550 __ mov(dest->as_register(), c->as_jint());
551 break;
552 }
553
554 case T_LONG: {
555 assert(patch_code == lir_patch_none, "no patching handled here");
556 __ mov(dest->as_register_lo(), (intptr_t)c->as_jlong());
557 break;
558 }
559
560 case T_OBJECT: {
561 if (patch_code == lir_patch_none) {
562 jobject2reg(c->as_jobject(), dest->as_register());
563 } else {
564 jobject2reg_with_patching(dest->as_register(), info);
565 }
566 break;
567 }
568
569 case T_METADATA: {
570 if (patch_code != lir_patch_none) {
571 klass2reg_with_patching(dest->as_register(), info);
572 } else {
573 __ mov_metadata(dest->as_register(), c->as_metadata());
574 }
575 break;
576 }
577
578 case T_FLOAT: {
579 if (__ operand_valid_for_float_immediate(c->as_jfloat())) {
580 __ fmovs(dest->as_float_reg(), (c->as_jfloat()));
581 } else {
582 __ adr(rscratch1, InternalAddress(float_constant(c->as_jfloat())));
583 __ ldrs(dest->as_float_reg(), Address(rscratch1));
584 }
585 break;
586 }
587
588 case T_DOUBLE: {
589 if (__ operand_valid_for_float_immediate(c->as_jdouble())) {
590 __ fmovd(dest->as_double_reg(), (c->as_jdouble()));
591 } else {
592 __ adr(rscratch1, InternalAddress(double_constant(c->as_jdouble())));
593 __ ldrd(dest->as_double_reg(), Address(rscratch1));
594 }
595 break;
596 }
597
598 default:
599 ShouldNotReachHere();
600 }
601 }
602
603 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) {
604 LIR_Const* c = src->as_constant_ptr();
605 switch (c->type()) {
606 case T_OBJECT:
607 {
608 if (! c->as_jobject())
609 __ str(zr, frame_map()->address_for_slot(dest->single_stack_ix()));
610 else {
611 const2reg(src, FrameMap::rscratch1_opr, lir_patch_none, NULL);
612 reg2stack(FrameMap::rscratch1_opr, dest, c->type(), false);
613 }
614 }
615 break;
616 case T_ADDRESS:
617 {
618 const2reg(src, FrameMap::rscratch1_opr, lir_patch_none, NULL);
619 reg2stack(FrameMap::rscratch1_opr, dest, c->type(), false);
620 }
621 case T_INT:
622 case T_FLOAT:
623 {
624 Register reg = zr;
625 if (c->as_jint_bits() == 0)
626 __ strw(zr, frame_map()->address_for_slot(dest->single_stack_ix()));
627 else {
628 __ movw(rscratch1, c->as_jint_bits());
629 __ strw(rscratch1, frame_map()->address_for_slot(dest->single_stack_ix()));
630 }
631 }
632 break;
633 case T_LONG:
634 case T_DOUBLE:
635 {
636 Register reg = zr;
637 if (c->as_jlong_bits() == 0)
638 __ str(zr, frame_map()->address_for_slot(dest->double_stack_ix(),
639 lo_word_offset_in_bytes));
640 else {
641 __ mov(rscratch1, (intptr_t)c->as_jlong_bits());
642 __ str(rscratch1, frame_map()->address_for_slot(dest->double_stack_ix(),
643 lo_word_offset_in_bytes));
644 }
645 }
646 break;
647 default:
648 ShouldNotReachHere();
649 }
650 }
651
652 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) {
653 assert(src->is_constant(), "should not call otherwise");
654 LIR_Const* c = src->as_constant_ptr();
655 LIR_Address* to_addr = dest->as_address_ptr();
656
657 void (Assembler::* insn)(Register Rt, const Address &adr);
658
659 switch (type) {
660 case T_ADDRESS:
661 assert(c->as_jint() == 0, "should be");
662 insn = &Assembler::str;
663 break;
664 case T_LONG:
665 assert(c->as_jlong() == 0, "should be");
666 insn = &Assembler::str;
667 break;
668 case T_INT:
669 assert(c->as_jint() == 0, "should be");
670 insn = &Assembler::strw;
671 break;
672 case T_OBJECT:
673 case T_ARRAY:
674 assert(c->as_jobject() == 0, "should be");
675 if (UseCompressedOops && !wide) {
676 insn = &Assembler::strw;
677 } else {
678 insn = &Assembler::str;
679 }
680 break;
681 case T_CHAR:
682 case T_SHORT:
683 assert(c->as_jint() == 0, "should be");
684 insn = &Assembler::strh;
685 break;
686 case T_BOOLEAN:
687 case T_BYTE:
688 assert(c->as_jint() == 0, "should be");
689 insn = &Assembler::strb;
690 break;
691 default:
692 ShouldNotReachHere();
693 insn = &Assembler::str; // unreachable
694 }
695
696 if (info) add_debug_info_for_null_check_here(info);
697 (_masm->*insn)(zr, as_Address(to_addr, rscratch1));
698 }
699
700 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) {
701 assert(src->is_register(), "should not call otherwise");
702 assert(dest->is_register(), "should not call otherwise");
703
704 // move between cpu-registers
705 if (dest->is_single_cpu()) {
706 if (src->type() == T_LONG) {
707 // Can do LONG -> OBJECT
708 move_regs(src->as_register_lo(), dest->as_register());
709 return;
710 }
711 assert(src->is_single_cpu(), "must match");
712 if (src->type() == T_OBJECT) {
713 __ verify_oop(src->as_register());
714 }
715 move_regs(src->as_register(), dest->as_register());
716
717 } else if (dest->is_double_cpu()) {
718 if (src->type() == T_OBJECT || src->type() == T_ARRAY) {
719 // Surprising to me but we can see move of a long to t_object
720 __ verify_oop(src->as_register());
721 move_regs(src->as_register(), dest->as_register_lo());
722 return;
723 }
724 assert(src->is_double_cpu(), "must match");
725 Register f_lo = src->as_register_lo();
726 Register f_hi = src->as_register_hi();
727 Register t_lo = dest->as_register_lo();
728 Register t_hi = dest->as_register_hi();
729 assert(f_hi == f_lo, "must be same");
730 assert(t_hi == t_lo, "must be same");
731 move_regs(f_lo, t_lo);
732
733 } else if (dest->is_single_fpu()) {
734 __ fmovs(dest->as_float_reg(), src->as_float_reg());
735
736 } else if (dest->is_double_fpu()) {
737 __ fmovd(dest->as_double_reg(), src->as_double_reg());
738
739 } else {
740 ShouldNotReachHere();
741 }
742 }
743
744 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) {
745 if (src->is_single_cpu()) {
746 if (type == T_ARRAY || type == T_OBJECT) {
747 __ str(src->as_register(), frame_map()->address_for_slot(dest->single_stack_ix()));
748 __ verify_oop(src->as_register());
749 } else if (type == T_METADATA || type == T_DOUBLE) {
750 __ str(src->as_register(), frame_map()->address_for_slot(dest->single_stack_ix()));
751 } else {
752 __ strw(src->as_register(), frame_map()->address_for_slot(dest->single_stack_ix()));
753 }
754
755 } else if (src->is_double_cpu()) {
756 Address dest_addr_LO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes);
757 __ str(src->as_register_lo(), dest_addr_LO);
758
759 } else if (src->is_single_fpu()) {
760 Address dest_addr = frame_map()->address_for_slot(dest->single_stack_ix());
761 __ strs(src->as_float_reg(), dest_addr);
762
763 } else if (src->is_double_fpu()) {
764 Address dest_addr = frame_map()->address_for_slot(dest->double_stack_ix());
765 __ strd(src->as_double_reg(), dest_addr);
766
767 } else {
768 ShouldNotReachHere();
769 }
770
771 }
772
773
774 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool wide, bool /* unaligned */) {
775 LIR_Address* to_addr = dest->as_address_ptr();
776 PatchingStub* patch = NULL;
777 Register compressed_src = rscratch1;
778
779 if (patch_code != lir_patch_none) {
780 deoptimize_trap(info);
781 return;
782 }
783
784 if (type == T_ARRAY || type == T_OBJECT) {
785 __ verify_oop(src->as_register());
786
787 if (UseCompressedOops && !wide) {
788 __ encode_heap_oop(compressed_src, src->as_register());
789 } else {
790 compressed_src = src->as_register();
791 }
792 }
793
794 int null_check_here = code_offset();
795 switch (type) {
796 case T_FLOAT: {
797 __ strs(src->as_float_reg(), as_Address(to_addr));
798 break;
799 }
800
801 case T_DOUBLE: {
802 __ strd(src->as_double_reg(), as_Address(to_addr));
803 break;
804 }
805
806 case T_ARRAY: // fall through
807 case T_OBJECT: // fall through
808 if (UseCompressedOops && !wide) {
809 __ strw(compressed_src, as_Address(to_addr, rscratch2));
810 } else {
811 __ str(compressed_src, as_Address(to_addr));
812 }
813 break;
814 case T_METADATA:
815 // We get here to store a method pointer to the stack to pass to
816 // a dtrace runtime call. This can't work on 64 bit with
817 // compressed klass ptrs: T_METADATA can be a compressed klass
818 // ptr or a 64 bit method pointer.
819 ShouldNotReachHere();
820 __ str(src->as_register(), as_Address(to_addr));
821 break;
822 case T_ADDRESS:
823 __ str(src->as_register(), as_Address(to_addr));
824 break;
825 case T_INT:
826 __ strw(src->as_register(), as_Address(to_addr));
827 break;
828
829 case T_LONG: {
830 __ str(src->as_register_lo(), as_Address_lo(to_addr));
831 break;
832 }
833
834 case T_BYTE: // fall through
835 case T_BOOLEAN: {
836 __ strb(src->as_register(), as_Address(to_addr));
837 break;
838 }
839
840 case T_CHAR: // fall through
841 case T_SHORT:
842 __ strh(src->as_register(), as_Address(to_addr));
843 break;
844
845 default:
846 ShouldNotReachHere();
847 }
848 if (info != NULL) {
849 add_debug_info_for_null_check(null_check_here, info);
850 }
851 }
852
853
854 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) {
855 assert(src->is_stack(), "should not call otherwise");
856 assert(dest->is_register(), "should not call otherwise");
857
858 if (dest->is_single_cpu()) {
859 if (type == T_ARRAY || type == T_OBJECT) {
860 __ ldr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
861 __ verify_oop(dest->as_register());
862 } else if (type == T_METADATA) {
863 __ ldr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
864 } else {
865 __ ldrw(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
866 }
867
868 } else if (dest->is_double_cpu()) {
869 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes);
870 __ ldr(dest->as_register_lo(), src_addr_LO);
871
872 } else if (dest->is_single_fpu()) {
873 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
874 __ ldrs(dest->as_float_reg(), src_addr);
875
876 } else if (dest->is_double_fpu()) {
877 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
878 __ ldrd(dest->as_double_reg(), src_addr);
879
880 } else {
881 ShouldNotReachHere();
882 }
883 }
884
885
886 void LIR_Assembler::klass2reg_with_patching(Register reg, CodeEmitInfo* info) {
887 address target = NULL;
888 relocInfo::relocType reloc_type = relocInfo::none;
889
890 switch (patching_id(info)) {
891 case PatchingStub::access_field_id:
892 target = Runtime1::entry_for(Runtime1::access_field_patching_id);
893 reloc_type = relocInfo::section_word_type;
894 break;
895 case PatchingStub::load_klass_id:
896 target = Runtime1::entry_for(Runtime1::load_klass_patching_id);
897 reloc_type = relocInfo::metadata_type;
898 break;
899 case PatchingStub::load_mirror_id:
900 target = Runtime1::entry_for(Runtime1::load_mirror_patching_id);
901 reloc_type = relocInfo::oop_type;
902 break;
903 case PatchingStub::load_appendix_id:
904 target = Runtime1::entry_for(Runtime1::load_appendix_patching_id);
905 reloc_type = relocInfo::oop_type;
906 break;
907 default: ShouldNotReachHere();
908 }
909
910 __ far_call(RuntimeAddress(target));
911 add_call_info_here(info);
912 }
913
914 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) {
915
916 LIR_Opr temp;
917 if (type == T_LONG || type == T_DOUBLE)
918 temp = FrameMap::rscratch1_long_opr;
919 else
920 temp = FrameMap::rscratch1_opr;
921
922 stack2reg(src, temp, src->type());
923 reg2stack(temp, dest, dest->type(), false);
924 }
925
926
927 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) {
928 LIR_Address* addr = src->as_address_ptr();
929 LIR_Address* from_addr = src->as_address_ptr();
930
931 if (addr->base()->type() == T_OBJECT) {
932 __ verify_oop(addr->base()->as_pointer_register());
933 }
934
935 if (patch_code != lir_patch_none) {
936 deoptimize_trap(info);
937 return;
938 }
939
940 if (info != NULL) {
941 add_debug_info_for_null_check_here(info);
942 }
943 int null_check_here = code_offset();
944 switch (type) {
945 case T_FLOAT: {
946 __ ldrs(dest->as_float_reg(), as_Address(from_addr));
947 break;
948 }
949
950 case T_DOUBLE: {
951 __ ldrd(dest->as_double_reg(), as_Address(from_addr));
952 break;
953 }
954
955 case T_ARRAY: // fall through
956 case T_OBJECT: // fall through
957 if (UseCompressedOops && !wide) {
958 __ ldrw(dest->as_register(), as_Address(from_addr));
959 } else {
960 __ ldr(dest->as_register(), as_Address(from_addr));
961 }
962 break;
963 case T_METADATA:
964 // We get here to store a method pointer to the stack to pass to
965 // a dtrace runtime call. This can't work on 64 bit with
966 // compressed klass ptrs: T_METADATA can be a compressed klass
967 // ptr or a 64 bit method pointer.
968 ShouldNotReachHere();
969 __ ldr(dest->as_register(), as_Address(from_addr));
970 break;
971 case T_ADDRESS:
972 // FIXME: OMG this is a horrible kludge. Any offset from an
973 // address that matches klass_offset_in_bytes() will be loaded
974 // as a word, not a long.
975 if (UseCompressedClassPointers && addr->disp() == oopDesc::klass_offset_in_bytes()) {
976 __ ldrw(dest->as_register(), as_Address(from_addr));
977 } else {
978 __ ldr(dest->as_register(), as_Address(from_addr));
979 }
980 break;
981 case T_INT:
982 __ ldrw(dest->as_register(), as_Address(from_addr));
983 break;
984
985 case T_LONG: {
986 __ ldr(dest->as_register_lo(), as_Address_lo(from_addr));
987 break;
988 }
989
990 case T_BYTE:
991 __ ldrsb(dest->as_register(), as_Address(from_addr));
992 break;
993 case T_BOOLEAN: {
994 __ ldrb(dest->as_register(), as_Address(from_addr));
995 break;
996 }
997
998 case T_CHAR:
999 __ ldrh(dest->as_register(), as_Address(from_addr));
1000 break;
1001 case T_SHORT:
1002 __ ldrsh(dest->as_register(), as_Address(from_addr));
1003 break;
1004
1005 default:
1006 ShouldNotReachHere();
1007 }
1008
1009 if (type == T_ARRAY || type == T_OBJECT) {
1010 if (UseCompressedOops && !wide) {
1011 __ decode_heap_oop(dest->as_register());
1012 }
1013 __ verify_oop(dest->as_register());
1014 } else if (type == T_ADDRESS && addr->disp() == oopDesc::klass_offset_in_bytes()) {
1015 if (UseCompressedClassPointers) {
1016 __ decode_klass_not_null(dest->as_register());
1017 }
1018 }
1019 }
1020
1021
1022 int LIR_Assembler::array_element_size(BasicType type) const {
1023 int elem_size = type2aelembytes(type);
1024 return exact_log2(elem_size);
1025 }
1026
1027 void LIR_Assembler::arithmetic_idiv(LIR_Op3* op, bool is_irem) {
1028 Register Rdividend = op->in_opr1()->as_register();
1029 Register Rdivisor = op->in_opr2()->as_register();
1030 Register Rscratch = op->in_opr3()->as_register();
1031 Register Rresult = op->result_opr()->as_register();
1032 int divisor = -1;
1033
1034 /*
1035 TODO: For some reason, using the Rscratch that gets passed in is
1036 not possible because the register allocator does not see the tmp reg
1037 as used, and assignes it the same register as Rdividend. We use rscratch1
1038 instead.
1039
1040 assert(Rdividend != Rscratch, "");
1041 assert(Rdivisor != Rscratch, "");
1042 */
1043
1044 if (Rdivisor == noreg && is_power_of_2(divisor)) {
1045 // convert division by a power of two into some shifts and logical operations
1046 }
1047
1048 __ corrected_idivl(Rresult, Rdividend, Rdivisor, is_irem, rscratch1);
1049 }
1050
1051 void LIR_Assembler::emit_op3(LIR_Op3* op) {
1052 switch (op->code()) {
1053 case lir_idiv:
1054 arithmetic_idiv(op, false);
1055 break;
1056 case lir_irem:
1057 arithmetic_idiv(op, true);
1058 break;
1059 case lir_fmad:
1060 __ fmaddd(op->result_opr()->as_double_reg(),
1061 op->in_opr1()->as_double_reg(),
1062 op->in_opr2()->as_double_reg(),
1063 op->in_opr3()->as_double_reg());
1064 break;
1065 case lir_fmaf:
1066 __ fmadds(op->result_opr()->as_float_reg(),
1067 op->in_opr1()->as_float_reg(),
1068 op->in_opr2()->as_float_reg(),
1069 op->in_opr3()->as_float_reg());
1070 break;
1071 default: ShouldNotReachHere(); break;
1072 }
1073 }
1074
1075 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) {
1076 #ifdef ASSERT
1077 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label");
1078 if (op->block() != NULL) _branch_target_blocks.append(op->block());
1079 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock());
1080 #endif
1081
1082 if (op->cond() == lir_cond_always) {
1083 if (op->info() != NULL) add_debug_info_for_branch(op->info());
1084 __ b(*(op->label()));
1085 } else {
1086 Assembler::Condition acond;
1087 if (op->code() == lir_cond_float_branch) {
1088 bool is_unordered = (op->ublock() == op->block());
1089 // Assembler::EQ does not permit unordered branches, so we add
1090 // another branch here. Likewise, Assembler::NE does not permit
1091 // ordered branches.
1092 if (is_unordered && op->cond() == lir_cond_equal
1093 || !is_unordered && op->cond() == lir_cond_notEqual)
1094 __ br(Assembler::VS, *(op->ublock()->label()));
1095 switch(op->cond()) {
1096 case lir_cond_equal: acond = Assembler::EQ; break;
1097 case lir_cond_notEqual: acond = Assembler::NE; break;
1098 case lir_cond_less: acond = (is_unordered ? Assembler::LT : Assembler::LO); break;
1099 case lir_cond_lessEqual: acond = (is_unordered ? Assembler::LE : Assembler::LS); break;
1100 case lir_cond_greaterEqual: acond = (is_unordered ? Assembler::HS : Assembler::GE); break;
1101 case lir_cond_greater: acond = (is_unordered ? Assembler::HI : Assembler::GT); break;
1102 default: ShouldNotReachHere();
1103 acond = Assembler::EQ; // unreachable
1104 }
1105 } else {
1106 switch (op->cond()) {
1107 case lir_cond_equal: acond = Assembler::EQ; break;
1108 case lir_cond_notEqual: acond = Assembler::NE; break;
1109 case lir_cond_less: acond = Assembler::LT; break;
1110 case lir_cond_lessEqual: acond = Assembler::LE; break;
1111 case lir_cond_greaterEqual: acond = Assembler::GE; break;
1112 case lir_cond_greater: acond = Assembler::GT; break;
1113 case lir_cond_belowEqual: acond = Assembler::LS; break;
1114 case lir_cond_aboveEqual: acond = Assembler::HS; break;
1115 default: ShouldNotReachHere();
1116 acond = Assembler::EQ; // unreachable
1117 }
1118 }
1119 __ br(acond,*(op->label()));
1120 }
1121 }
1122
1123
1124
1125 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) {
1126 LIR_Opr src = op->in_opr();
1127 LIR_Opr dest = op->result_opr();
1128
1129 switch (op->bytecode()) {
1130 case Bytecodes::_i2f:
1131 {
1132 __ scvtfws(dest->as_float_reg(), src->as_register());
1133 break;
1134 }
1135 case Bytecodes::_i2d:
1136 {
1137 __ scvtfwd(dest->as_double_reg(), src->as_register());
1138 break;
1139 }
1140 case Bytecodes::_l2d:
1141 {
1142 __ scvtfd(dest->as_double_reg(), src->as_register_lo());
1143 break;
1144 }
1145 case Bytecodes::_l2f:
1146 {
1147 __ scvtfs(dest->as_float_reg(), src->as_register_lo());
1148 break;
1149 }
1150 case Bytecodes::_f2d:
1151 {
1152 __ fcvts(dest->as_double_reg(), src->as_float_reg());
1153 break;
1154 }
1155 case Bytecodes::_d2f:
1156 {
1157 __ fcvtd(dest->as_float_reg(), src->as_double_reg());
1158 break;
1159 }
1160 case Bytecodes::_i2c:
1161 {
1162 __ ubfx(dest->as_register(), src->as_register(), 0, 16);
1163 break;
1164 }
1165 case Bytecodes::_i2l:
1166 {
1167 __ sxtw(dest->as_register_lo(), src->as_register());
1168 break;
1169 }
1170 case Bytecodes::_i2s:
1171 {
1172 __ sxth(dest->as_register(), src->as_register());
1173 break;
1174 }
1175 case Bytecodes::_i2b:
1176 {
1177 __ sxtb(dest->as_register(), src->as_register());
1178 break;
1179 }
1180 case Bytecodes::_l2i:
1181 {
1182 _masm->block_comment("FIXME: This could be a no-op");
1183 __ uxtw(dest->as_register(), src->as_register_lo());
1184 break;
1185 }
1186 case Bytecodes::_d2l:
1187 {
1188 __ fcvtzd(dest->as_register_lo(), src->as_double_reg());
1189 break;
1190 }
1191 case Bytecodes::_f2i:
1192 {
1193 __ fcvtzsw(dest->as_register(), src->as_float_reg());
1194 break;
1195 }
1196 case Bytecodes::_f2l:
1197 {
1198 __ fcvtzs(dest->as_register_lo(), src->as_float_reg());
1199 break;
1200 }
1201 case Bytecodes::_d2i:
1202 {
1203 __ fcvtzdw(dest->as_register(), src->as_double_reg());
1204 break;
1205 }
1206 default: ShouldNotReachHere();
1207 }
1208 }
1209
1210 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) {
1211 if (op->init_check()) {
1212 __ ldrb(rscratch1, Address(op->klass()->as_register(),
1213 InstanceKlass::init_state_offset()));
1214 __ cmpw(rscratch1, InstanceKlass::fully_initialized);
1215 add_debug_info_for_null_check_here(op->stub()->info());
1216 __ br(Assembler::NE, *op->stub()->entry());
1217 }
1218 __ allocate_object(op->obj()->as_register(),
1219 op->tmp1()->as_register(),
1220 op->tmp2()->as_register(),
1221 op->header_size(),
1222 op->object_size(),
1223 op->klass()->as_register(),
1224 *op->stub()->entry());
1225 __ bind(*op->stub()->continuation());
1226 }
1227
1228 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) {
1229 Register len = op->len()->as_register();
1230 __ uxtw(len, len);
1231
1232 if (UseSlowPath ||
1233 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) ||
1234 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) {
1235 __ b(*op->stub()->entry());
1236 } else {
1237 Register tmp1 = op->tmp1()->as_register();
1238 Register tmp2 = op->tmp2()->as_register();
1239 Register tmp3 = op->tmp3()->as_register();
1240 if (len == tmp1) {
1241 tmp1 = tmp3;
1242 } else if (len == tmp2) {
1243 tmp2 = tmp3;
1244 } else if (len == tmp3) {
1245 // everything is ok
1246 } else {
1247 __ mov(tmp3, len);
1248 }
1249 __ allocate_array(op->obj()->as_register(),
1250 len,
1251 tmp1,
1252 tmp2,
1253 arrayOopDesc::header_size(op->type()),
1254 array_element_size(op->type()),
1255 op->klass()->as_register(),
1256 *op->stub()->entry());
1257 }
1258 __ bind(*op->stub()->continuation());
1259 }
1260
1261 void LIR_Assembler::type_profile_helper(Register mdo,
1262 ciMethodData *md, ciProfileData *data,
1263 Register recv, Label* update_done) {
1264 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1265 Label next_test;
1266 // See if the receiver is receiver[n].
1267 __ lea(rscratch2, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))));
1268 __ ldr(rscratch1, Address(rscratch2));
1269 __ cmp(recv, rscratch1);
1270 __ br(Assembler::NE, next_test);
1271 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)));
1272 __ addptr(data_addr, DataLayout::counter_increment);
1273 __ b(*update_done);
1274 __ bind(next_test);
1275 }
1276
1277 // Didn't find receiver; find next empty slot and fill it in
1278 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1279 Label next_test;
1280 __ lea(rscratch2,
1281 Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))));
1282 Address recv_addr(rscratch2);
1283 __ ldr(rscratch1, recv_addr);
1284 __ cbnz(rscratch1, next_test);
1285 __ str(recv, recv_addr);
1286 __ mov(rscratch1, DataLayout::counter_increment);
1287 __ lea(rscratch2, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))));
1288 __ str(rscratch1, Address(rscratch2));
1289 __ b(*update_done);
1290 __ bind(next_test);
1291 }
1292 }
1293
1294 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) {
1295 // we always need a stub for the failure case.
1296 CodeStub* stub = op->stub();
1297 Register obj = op->object()->as_register();
1298 Register k_RInfo = op->tmp1()->as_register();
1299 Register klass_RInfo = op->tmp2()->as_register();
1300 Register dst = op->result_opr()->as_register();
1301 ciKlass* k = op->klass();
1302 Register Rtmp1 = noreg;
1303
1304 // check if it needs to be profiled
1305 ciMethodData* md;
1306 ciProfileData* data;
1307
1308 const bool should_profile = op->should_profile();
1309
1310 if (should_profile) {
1311 ciMethod* method = op->profiled_method();
1312 assert(method != NULL, "Should have method");
1313 int bci = op->profiled_bci();
1314 md = method->method_data_or_null();
1315 assert(md != NULL, "Sanity");
1316 data = md->bci_to_data(bci);
1317 assert(data != NULL, "need data for type check");
1318 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1319 }
1320 Label profile_cast_success, profile_cast_failure;
1321 Label *success_target = should_profile ? &profile_cast_success : success;
1322 Label *failure_target = should_profile ? &profile_cast_failure : failure;
1323
1324 if (obj == k_RInfo) {
1325 k_RInfo = dst;
1326 } else if (obj == klass_RInfo) {
1327 klass_RInfo = dst;
1328 }
1329 if (k->is_loaded() && !UseCompressedClassPointers) {
1330 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1331 } else {
1332 Rtmp1 = op->tmp3()->as_register();
1333 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1334 }
1335
1336 assert_different_registers(obj, k_RInfo, klass_RInfo);
1337
1338 if (should_profile) {
1339 Label not_null;
1340 __ cbnz(obj, not_null);
1341 // Object is null; update MDO and exit
1342 Register mdo = klass_RInfo;
1343 __ mov_metadata(mdo, md->constant_encoding());
1344 Address data_addr
1345 = __ form_address(rscratch2, mdo,
1346 md->byte_offset_of_slot(data, DataLayout::DataLayout::header_offset()),
1347 LogBytesPerWord);
1348 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1349 __ ldr(rscratch1, data_addr);
1350 __ orr(rscratch1, rscratch1, header_bits);
1351 __ str(rscratch1, data_addr);
1352 __ b(*obj_is_null);
1353 __ bind(not_null);
1354 } else {
1355 __ cbz(obj, *obj_is_null);
1356 }
1357
1358 if (!k->is_loaded()) {
1359 klass2reg_with_patching(k_RInfo, op->info_for_patch());
1360 } else {
1361 __ mov_metadata(k_RInfo, k->constant_encoding());
1362 }
1363 __ verify_oop(obj);
1364
1365 if (op->fast_check()) {
1366 // get object class
1367 // not a safepoint as obj null check happens earlier
1368 __ load_klass(rscratch1, obj);
1369 __ cmp( rscratch1, k_RInfo);
1370
1371 __ br(Assembler::NE, *failure_target);
1372 // successful cast, fall through to profile or jump
1373 } else {
1374 // get object class
1375 // not a safepoint as obj null check happens earlier
1376 __ load_klass(klass_RInfo, obj);
1377 if (k->is_loaded()) {
1378 // See if we get an immediate positive hit
1379 __ ldr(rscratch1, Address(klass_RInfo, long(k->super_check_offset())));
1380 __ cmp(k_RInfo, rscratch1);
1381 if ((juint)in_bytes(Klass::secondary_super_cache_offset()) != k->super_check_offset()) {
1382 __ br(Assembler::NE, *failure_target);
1383 // successful cast, fall through to profile or jump
1384 } else {
1385 // See if we get an immediate positive hit
1386 __ br(Assembler::EQ, *success_target);
1387 // check for self
1388 __ cmp(klass_RInfo, k_RInfo);
1389 __ br(Assembler::EQ, *success_target);
1390
1391 __ stp(klass_RInfo, k_RInfo, Address(__ pre(sp, -2 * wordSize)));
1392 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1393 __ ldr(klass_RInfo, Address(__ post(sp, 2 * wordSize)));
1394 // result is a boolean
1395 __ cbzw(klass_RInfo, *failure_target);
1396 // successful cast, fall through to profile or jump
1397 }
1398 } else {
1399 // perform the fast part of the checking logic
1400 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1401 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1402 __ stp(klass_RInfo, k_RInfo, Address(__ pre(sp, -2 * wordSize)));
1403 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1404 __ ldp(k_RInfo, klass_RInfo, Address(__ post(sp, 2 * wordSize)));
1405 // result is a boolean
1406 __ cbz(k_RInfo, *failure_target);
1407 // successful cast, fall through to profile or jump
1408 }
1409 }
1410 if (should_profile) {
1411 Register mdo = klass_RInfo, recv = k_RInfo;
1412 __ bind(profile_cast_success);
1413 __ mov_metadata(mdo, md->constant_encoding());
1414 __ load_klass(recv, obj);
1415 Label update_done;
1416 type_profile_helper(mdo, md, data, recv, success);
1417 __ b(*success);
1418
1419 __ bind(profile_cast_failure);
1420 __ mov_metadata(mdo, md->constant_encoding());
1421 Address counter_addr
1422 = __ form_address(rscratch2, mdo,
1423 md->byte_offset_of_slot(data, CounterData::count_offset()),
1424 LogBytesPerWord);
1425 __ ldr(rscratch1, counter_addr);
1426 __ sub(rscratch1, rscratch1, DataLayout::counter_increment);
1427 __ str(rscratch1, counter_addr);
1428 __ b(*failure);
1429 }
1430 __ b(*success);
1431 }
1432
1433
1434 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) {
1435 const bool should_profile = op->should_profile();
1436
1437 LIR_Code code = op->code();
1438 if (code == lir_store_check) {
1439 Register value = op->object()->as_register();
1440 Register array = op->array()->as_register();
1441 Register k_RInfo = op->tmp1()->as_register();
1442 Register klass_RInfo = op->tmp2()->as_register();
1443 Register Rtmp1 = op->tmp3()->as_register();
1444
1445 CodeStub* stub = op->stub();
1446
1447 // check if it needs to be profiled
1448 ciMethodData* md;
1449 ciProfileData* data;
1450
1451 if (should_profile) {
1452 ciMethod* method = op->profiled_method();
1453 assert(method != NULL, "Should have method");
1454 int bci = op->profiled_bci();
1455 md = method->method_data_or_null();
1456 assert(md != NULL, "Sanity");
1457 data = md->bci_to_data(bci);
1458 assert(data != NULL, "need data for type check");
1459 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1460 }
1461 Label profile_cast_success, profile_cast_failure, done;
1462 Label *success_target = should_profile ? &profile_cast_success : &done;
1463 Label *failure_target = should_profile ? &profile_cast_failure : stub->entry();
1464
1465 if (should_profile) {
1466 Label not_null;
1467 __ cbnz(value, not_null);
1468 // Object is null; update MDO and exit
1469 Register mdo = klass_RInfo;
1470 __ mov_metadata(mdo, md->constant_encoding());
1471 Address data_addr
1472 = __ form_address(rscratch2, mdo,
1473 md->byte_offset_of_slot(data, DataLayout::header_offset()),
1474 LogBytesPerInt);
1475 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1476 __ ldrw(rscratch1, data_addr);
1477 __ orrw(rscratch1, rscratch1, header_bits);
1478 __ strw(rscratch1, data_addr);
1479 __ b(done);
1480 __ bind(not_null);
1481 } else {
1482 __ cbz(value, done);
1483 }
1484
1485 add_debug_info_for_null_check_here(op->info_for_exception());
1486 __ load_klass(k_RInfo, array);
1487 __ load_klass(klass_RInfo, value);
1488
1489 // get instance klass (it's already uncompressed)
1490 __ ldr(k_RInfo, Address(k_RInfo, ObjArrayKlass::element_klass_offset()));
1491 // perform the fast part of the checking logic
1492 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1493 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1494 __ stp(klass_RInfo, k_RInfo, Address(__ pre(sp, -2 * wordSize)));
1495 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1496 __ ldp(k_RInfo, klass_RInfo, Address(__ post(sp, 2 * wordSize)));
1497 // result is a boolean
1498 __ cbzw(k_RInfo, *failure_target);
1499 // fall through to the success case
1500
1501 if (should_profile) {
1502 Register mdo = klass_RInfo, recv = k_RInfo;
1503 __ bind(profile_cast_success);
1504 __ mov_metadata(mdo, md->constant_encoding());
1505 __ load_klass(recv, value);
1506 Label update_done;
1507 type_profile_helper(mdo, md, data, recv, &done);
1508 __ b(done);
1509
1510 __ bind(profile_cast_failure);
1511 __ mov_metadata(mdo, md->constant_encoding());
1512 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1513 __ lea(rscratch2, counter_addr);
1514 __ ldr(rscratch1, Address(rscratch2));
1515 __ sub(rscratch1, rscratch1, DataLayout::counter_increment);
1516 __ str(rscratch1, Address(rscratch2));
1517 __ b(*stub->entry());
1518 }
1519
1520 __ bind(done);
1521 } else if (code == lir_checkcast) {
1522 Register obj = op->object()->as_register();
1523 Register dst = op->result_opr()->as_register();
1524 Label success;
1525 emit_typecheck_helper(op, &success, op->stub()->entry(), &success);
1526 __ bind(success);
1527 if (dst != obj) {
1528 __ mov(dst, obj);
1529 }
1530 } else if (code == lir_instanceof) {
1531 Register obj = op->object()->as_register();
1532 Register dst = op->result_opr()->as_register();
1533 Label success, failure, done;
1534 emit_typecheck_helper(op, &success, &failure, &failure);
1535 __ bind(failure);
1536 __ mov(dst, zr);
1537 __ b(done);
1538 __ bind(success);
1539 __ mov(dst, 1);
1540 __ bind(done);
1541 } else {
1542 ShouldNotReachHere();
1543 }
1544 }
1545
1546 void LIR_Assembler::casw(Register addr, Register newval, Register cmpval) {
1547 __ cmpxchg(addr, cmpval, newval, Assembler::word, /* acquire*/ true, /* release*/ true, /* weak*/ false, rscratch1);
1548 __ cset(rscratch1, Assembler::NE);
1549 __ membar(__ AnyAny);
1550 }
1551
1552 void LIR_Assembler::casl(Register addr, Register newval, Register cmpval) {
1553 __ cmpxchg(addr, cmpval, newval, Assembler::xword, /* acquire*/ true, /* release*/ true, /* weak*/ false, rscratch1);
1554 __ cset(rscratch1, Assembler::NE);
1555 __ membar(__ AnyAny);
1556 }
1557
1558
1559 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) {
1560 assert(VM_Version::supports_cx8(), "wrong machine");
1561 Register addr;
1562 if (op->addr()->is_register()) {
1563 addr = as_reg(op->addr());
1564 } else {
1565 assert(op->addr()->is_address(), "what else?");
1566 LIR_Address* addr_ptr = op->addr()->as_address_ptr();
1567 assert(addr_ptr->disp() == 0, "need 0 disp");
1568 assert(addr_ptr->index() == LIR_OprDesc::illegalOpr(), "need 0 index");
1569 addr = as_reg(addr_ptr->base());
1570 }
1571 Register newval = as_reg(op->new_value());
1572 Register cmpval = as_reg(op->cmp_value());
1573 Label succeed, fail, around;
1574
1575 if (op->code() == lir_cas_obj) {
1576 if (UseCompressedOops) {
1577 Register t1 = op->tmp1()->as_register();
1578 assert(op->tmp1()->is_valid(), "must be");
1579 __ encode_heap_oop(t1, cmpval);
1580 cmpval = t1;
1581 __ encode_heap_oop(rscratch2, newval);
1582 newval = rscratch2;
1583 casw(addr, newval, cmpval);
1584 } else {
1585 casl(addr, newval, cmpval);
1586 }
1587 } else if (op->code() == lir_cas_int) {
1588 casw(addr, newval, cmpval);
1589 } else {
1590 casl(addr, newval, cmpval);
1591 }
1592 }
1593
1594
1595 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) {
1596
1597 Assembler::Condition acond, ncond;
1598 switch (condition) {
1599 case lir_cond_equal: acond = Assembler::EQ; ncond = Assembler::NE; break;
1600 case lir_cond_notEqual: acond = Assembler::NE; ncond = Assembler::EQ; break;
1601 case lir_cond_less: acond = Assembler::LT; ncond = Assembler::GE; break;
1602 case lir_cond_lessEqual: acond = Assembler::LE; ncond = Assembler::GT; break;
1603 case lir_cond_greaterEqual: acond = Assembler::GE; ncond = Assembler::LT; break;
1604 case lir_cond_greater: acond = Assembler::GT; ncond = Assembler::LE; break;
1605 case lir_cond_belowEqual:
1606 case lir_cond_aboveEqual:
1607 default: ShouldNotReachHere();
1608 acond = Assembler::EQ; ncond = Assembler::NE; // unreachable
1609 }
1610
1611 assert(result->is_single_cpu() || result->is_double_cpu(),
1612 "expect single register for result");
1613 if (opr1->is_constant() && opr2->is_constant()
1614 && opr1->type() == T_INT && opr2->type() == T_INT) {
1615 jint val1 = opr1->as_jint();
1616 jint val2 = opr2->as_jint();
1617 if (val1 == 0 && val2 == 1) {
1618 __ cset(result->as_register(), ncond);
1619 return;
1620 } else if (val1 == 1 && val2 == 0) {
1621 __ cset(result->as_register(), acond);
1622 return;
1623 }
1624 }
1625
1626 if (opr1->is_constant() && opr2->is_constant()
1627 && opr1->type() == T_LONG && opr2->type() == T_LONG) {
1628 jlong val1 = opr1->as_jlong();
1629 jlong val2 = opr2->as_jlong();
1630 if (val1 == 0 && val2 == 1) {
1631 __ cset(result->as_register_lo(), ncond);
1632 return;
1633 } else if (val1 == 1 && val2 == 0) {
1634 __ cset(result->as_register_lo(), acond);
1635 return;
1636 }
1637 }
1638
1639 if (opr1->is_stack()) {
1640 stack2reg(opr1, FrameMap::rscratch1_opr, result->type());
1641 opr1 = FrameMap::rscratch1_opr;
1642 } else if (opr1->is_constant()) {
1643 LIR_Opr tmp
1644 = opr1->type() == T_LONG ? FrameMap::rscratch1_long_opr : FrameMap::rscratch1_opr;
1645 const2reg(opr1, tmp, lir_patch_none, NULL);
1646 opr1 = tmp;
1647 }
1648
1649 if (opr2->is_stack()) {
1650 stack2reg(opr2, FrameMap::rscratch2_opr, result->type());
1651 opr2 = FrameMap::rscratch2_opr;
1652 } else if (opr2->is_constant()) {
1653 LIR_Opr tmp
1654 = opr2->type() == T_LONG ? FrameMap::rscratch2_long_opr : FrameMap::rscratch2_opr;
1655 const2reg(opr2, tmp, lir_patch_none, NULL);
1656 opr2 = tmp;
1657 }
1658
1659 if (result->type() == T_LONG)
1660 __ csel(result->as_register_lo(), opr1->as_register_lo(), opr2->as_register_lo(), acond);
1661 else
1662 __ csel(result->as_register(), opr1->as_register(), opr2->as_register(), acond);
1663 }
1664
1665 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) {
1666 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method");
1667
1668 if (left->is_single_cpu()) {
1669 Register lreg = left->as_register();
1670 Register dreg = as_reg(dest);
1671
1672 if (right->is_single_cpu()) {
1673 // cpu register - cpu register
1674
1675 assert(left->type() == T_INT && right->type() == T_INT && dest->type() == T_INT,
1676 "should be");
1677 Register rreg = right->as_register();
1678 switch (code) {
1679 case lir_add: __ addw (dest->as_register(), lreg, rreg); break;
1680 case lir_sub: __ subw (dest->as_register(), lreg, rreg); break;
1681 case lir_mul: __ mulw (dest->as_register(), lreg, rreg); break;
1682 default: ShouldNotReachHere();
1683 }
1684
1685 } else if (right->is_double_cpu()) {
1686 Register rreg = right->as_register_lo();
1687 // single_cpu + double_cpu: can happen with obj+long
1688 assert(code == lir_add || code == lir_sub, "mismatched arithmetic op");
1689 switch (code) {
1690 case lir_add: __ add(dreg, lreg, rreg); break;
1691 case lir_sub: __ sub(dreg, lreg, rreg); break;
1692 default: ShouldNotReachHere();
1693 }
1694 } else if (right->is_constant()) {
1695 // cpu register - constant
1696 jlong c;
1697
1698 // FIXME. This is fugly: we really need to factor all this logic.
1699 switch(right->type()) {
1700 case T_LONG:
1701 c = right->as_constant_ptr()->as_jlong();
1702 break;
1703 case T_INT:
1704 case T_ADDRESS:
1705 c = right->as_constant_ptr()->as_jint();
1706 break;
1707 default:
1708 ShouldNotReachHere();
1709 c = 0; // unreachable
1710 break;
1711 }
1712
1713 assert(code == lir_add || code == lir_sub, "mismatched arithmetic op");
1714 if (c == 0 && dreg == lreg) {
1715 COMMENT("effective nop elided");
1716 return;
1717 }
1718 switch(left->type()) {
1719 case T_INT:
1720 switch (code) {
1721 case lir_add: __ addw(dreg, lreg, c); break;
1722 case lir_sub: __ subw(dreg, lreg, c); break;
1723 default: ShouldNotReachHere();
1724 }
1725 break;
1726 case T_OBJECT:
1727 case T_ADDRESS:
1728 switch (code) {
1729 case lir_add: __ add(dreg, lreg, c); break;
1730 case lir_sub: __ sub(dreg, lreg, c); break;
1731 default: ShouldNotReachHere();
1732 }
1733 break;
1734 ShouldNotReachHere();
1735 }
1736 } else {
1737 ShouldNotReachHere();
1738 }
1739
1740 } else if (left->is_double_cpu()) {
1741 Register lreg_lo = left->as_register_lo();
1742
1743 if (right->is_double_cpu()) {
1744 // cpu register - cpu register
1745 Register rreg_lo = right->as_register_lo();
1746 switch (code) {
1747 case lir_add: __ add (dest->as_register_lo(), lreg_lo, rreg_lo); break;
1748 case lir_sub: __ sub (dest->as_register_lo(), lreg_lo, rreg_lo); break;
1749 case lir_mul: __ mul (dest->as_register_lo(), lreg_lo, rreg_lo); break;
1750 case lir_div: __ corrected_idivq(dest->as_register_lo(), lreg_lo, rreg_lo, false, rscratch1); break;
1751 case lir_rem: __ corrected_idivq(dest->as_register_lo(), lreg_lo, rreg_lo, true, rscratch1); break;
1752 default:
1753 ShouldNotReachHere();
1754 }
1755
1756 } else if (right->is_constant()) {
1757 jlong c = right->as_constant_ptr()->as_jlong_bits();
1758 Register dreg = as_reg(dest);
1759 assert(code == lir_add || code == lir_sub, "mismatched arithmetic op");
1760 if (c == 0 && dreg == lreg_lo) {
1761 COMMENT("effective nop elided");
1762 return;
1763 }
1764 switch (code) {
1765 case lir_add: __ add(dreg, lreg_lo, c); break;
1766 case lir_sub: __ sub(dreg, lreg_lo, c); break;
1767 default:
1768 ShouldNotReachHere();
1769 }
1770 } else {
1771 ShouldNotReachHere();
1772 }
1773 } else if (left->is_single_fpu()) {
1774 assert(right->is_single_fpu(), "right hand side of float arithmetics needs to be float register");
1775 switch (code) {
1776 case lir_add: __ fadds (dest->as_float_reg(), left->as_float_reg(), right->as_float_reg()); break;
1777 case lir_sub: __ fsubs (dest->as_float_reg(), left->as_float_reg(), right->as_float_reg()); break;
1778 case lir_mul: __ fmuls (dest->as_float_reg(), left->as_float_reg(), right->as_float_reg()); break;
1779 case lir_div: __ fdivs (dest->as_float_reg(), left->as_float_reg(), right->as_float_reg()); break;
1780 default:
1781 ShouldNotReachHere();
1782 }
1783 } else if (left->is_double_fpu()) {
1784 if (right->is_double_fpu()) {
1785 // cpu register - cpu register
1786 switch (code) {
1787 case lir_add: __ faddd (dest->as_double_reg(), left->as_double_reg(), right->as_double_reg()); break;
1788 case lir_sub: __ fsubd (dest->as_double_reg(), left->as_double_reg(), right->as_double_reg()); break;
1789 case lir_mul: __ fmuld (dest->as_double_reg(), left->as_double_reg(), right->as_double_reg()); break;
1790 case lir_div: __ fdivd (dest->as_double_reg(), left->as_double_reg(), right->as_double_reg()); break;
1791 default:
1792 ShouldNotReachHere();
1793 }
1794 } else {
1795 if (right->is_constant()) {
1796 ShouldNotReachHere();
1797 }
1798 ShouldNotReachHere();
1799 }
1800 } else if (left->is_single_stack() || left->is_address()) {
1801 assert(left == dest, "left and dest must be equal");
1802 ShouldNotReachHere();
1803 } else {
1804 ShouldNotReachHere();
1805 }
1806 }
1807
1808 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { Unimplemented(); }
1809
1810
1811 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) {
1812 switch(code) {
1813 case lir_abs : __ fabsd(dest->as_double_reg(), value->as_double_reg()); break;
1814 case lir_sqrt: __ fsqrtd(dest->as_double_reg(), value->as_double_reg()); break;
1815 default : ShouldNotReachHere();
1816 }
1817 }
1818
1819 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) {
1820
1821 assert(left->is_single_cpu() || left->is_double_cpu(), "expect single or double register");
1822 Register Rleft = left->is_single_cpu() ? left->as_register() :
1823 left->as_register_lo();
1824 if (dst->is_single_cpu()) {
1825 Register Rdst = dst->as_register();
1826 if (right->is_constant()) {
1827 switch (code) {
1828 case lir_logic_and: __ andw (Rdst, Rleft, right->as_jint()); break;
1829 case lir_logic_or: __ orrw (Rdst, Rleft, right->as_jint()); break;
1830 case lir_logic_xor: __ eorw (Rdst, Rleft, right->as_jint()); break;
1831 default: ShouldNotReachHere(); break;
1832 }
1833 } else {
1834 Register Rright = right->is_single_cpu() ? right->as_register() :
1835 right->as_register_lo();
1836 switch (code) {
1837 case lir_logic_and: __ andw (Rdst, Rleft, Rright); break;
1838 case lir_logic_or: __ orrw (Rdst, Rleft, Rright); break;
1839 case lir_logic_xor: __ eorw (Rdst, Rleft, Rright); break;
1840 default: ShouldNotReachHere(); break;
1841 }
1842 }
1843 } else {
1844 Register Rdst = dst->as_register_lo();
1845 if (right->is_constant()) {
1846 switch (code) {
1847 case lir_logic_and: __ andr (Rdst, Rleft, right->as_jlong()); break;
1848 case lir_logic_or: __ orr (Rdst, Rleft, right->as_jlong()); break;
1849 case lir_logic_xor: __ eor (Rdst, Rleft, right->as_jlong()); break;
1850 default: ShouldNotReachHere(); break;
1851 }
1852 } else {
1853 Register Rright = right->is_single_cpu() ? right->as_register() :
1854 right->as_register_lo();
1855 switch (code) {
1856 case lir_logic_and: __ andr (Rdst, Rleft, Rright); break;
1857 case lir_logic_or: __ orr (Rdst, Rleft, Rright); break;
1858 case lir_logic_xor: __ eor (Rdst, Rleft, Rright); break;
1859 default: ShouldNotReachHere(); break;
1860 }
1861 }
1862 }
1863 }
1864
1865
1866
1867 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { Unimplemented(); }
1868
1869
1870 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) {
1871 if (opr1->is_constant() && opr2->is_single_cpu()) {
1872 // tableswitch
1873 Register reg = as_reg(opr2);
1874 struct tableswitch &table = switches[opr1->as_constant_ptr()->as_jint()];
1875 __ tableswitch(reg, table._first_key, table._last_key, table._branches, table._after);
1876 } else if (opr1->is_single_cpu() || opr1->is_double_cpu()) {
1877 Register reg1 = as_reg(opr1);
1878 if (opr2->is_single_cpu()) {
1879 // cpu register - cpu register
1880 Register reg2 = opr2->as_register();
1881 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) {
1882 __ cmp(reg1, reg2);
1883 } else {
1884 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?");
1885 __ cmpw(reg1, reg2);
1886 }
1887 return;
1888 }
1889 if (opr2->is_double_cpu()) {
1890 // cpu register - cpu register
1891 Register reg2 = opr2->as_register_lo();
1892 __ cmp(reg1, reg2);
1893 return;
1894 }
1895
1896 if (opr2->is_constant()) {
1897 bool is_32bit = false; // width of register operand
1898 jlong imm;
1899
1900 switch(opr2->type()) {
1901 case T_INT:
1902 imm = opr2->as_constant_ptr()->as_jint();
1903 is_32bit = true;
1904 break;
1905 case T_LONG:
1906 imm = opr2->as_constant_ptr()->as_jlong();
1907 break;
1908 case T_ADDRESS:
1909 imm = opr2->as_constant_ptr()->as_jint();
1910 break;
1911 case T_OBJECT:
1912 case T_ARRAY:
1913 imm = jlong(opr2->as_constant_ptr()->as_jobject());
1914 break;
1915 default:
1916 ShouldNotReachHere();
1917 imm = 0; // unreachable
1918 break;
1919 }
1920
1921 if (Assembler::operand_valid_for_add_sub_immediate(imm)) {
1922 if (is_32bit)
1923 __ cmpw(reg1, imm);
1924 else
1925 __ cmp(reg1, imm);
1926 return;
1927 } else {
1928 __ mov(rscratch1, imm);
1929 if (is_32bit)
1930 __ cmpw(reg1, rscratch1);
1931 else
1932 __ cmp(reg1, rscratch1);
1933 return;
1934 }
1935 } else
1936 ShouldNotReachHere();
1937 } else if (opr1->is_single_fpu()) {
1938 FloatRegister reg1 = opr1->as_float_reg();
1939 assert(opr2->is_single_fpu(), "expect single float register");
1940 FloatRegister reg2 = opr2->as_float_reg();
1941 __ fcmps(reg1, reg2);
1942 } else if (opr1->is_double_fpu()) {
1943 FloatRegister reg1 = opr1->as_double_reg();
1944 assert(opr2->is_double_fpu(), "expect double float register");
1945 FloatRegister reg2 = opr2->as_double_reg();
1946 __ fcmpd(reg1, reg2);
1947 } else {
1948 ShouldNotReachHere();
1949 }
1950 }
1951
1952 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op){
1953 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) {
1954 bool is_unordered_less = (code == lir_ucmp_fd2i);
1955 if (left->is_single_fpu()) {
1956 __ float_cmp(true, is_unordered_less ? -1 : 1, left->as_float_reg(), right->as_float_reg(), dst->as_register());
1957 } else if (left->is_double_fpu()) {
1958 __ float_cmp(false, is_unordered_less ? -1 : 1, left->as_double_reg(), right->as_double_reg(), dst->as_register());
1959 } else {
1960 ShouldNotReachHere();
1961 }
1962 } else if (code == lir_cmp_l2i) {
1963 Label done;
1964 __ cmp(left->as_register_lo(), right->as_register_lo());
1965 __ mov(dst->as_register(), (u_int64_t)-1L);
1966 __ br(Assembler::LT, done);
1967 __ csinc(dst->as_register(), zr, zr, Assembler::EQ);
1968 __ bind(done);
1969 } else {
1970 ShouldNotReachHere();
1971 }
1972 }
1973
1974
1975 void LIR_Assembler::align_call(LIR_Code code) { }
1976
1977
1978 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) {
1979 address call = __ trampoline_call(Address(op->addr(), rtype));
1980 if (call == NULL) {
1981 bailout("trampoline stub overflow");
1982 return;
1983 }
1984 add_call_info(code_offset(), op->info());
1985 }
1986
1987
1988 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) {
1989 address call = __ ic_call(op->addr());
1990 if (call == NULL) {
1991 bailout("trampoline stub overflow");
1992 return;
1993 }
1994 add_call_info(code_offset(), op->info());
1995 }
1996
1997
1998 /* Currently, vtable-dispatch is only enabled for sparc platforms */
1999 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) {
2000 ShouldNotReachHere();
2001 }
2002
2003
2004 void LIR_Assembler::emit_static_call_stub() {
2005 address call_pc = __ pc();
2006 address stub = __ start_a_stub(call_stub_size());
2007 if (stub == NULL) {
2008 bailout("static call stub overflow");
2009 return;
2010 }
2011
2012 int start = __ offset();
2013
2014 __ relocate(static_stub_Relocation::spec(call_pc));
2015 __ mov_metadata(rmethod, (Metadata*)NULL);
2016 __ movptr(rscratch1, 0);
2017 __ br(rscratch1);
2018
2019 assert(__ offset() - start <= call_stub_size(), "stub too big");
2020 __ end_a_stub();
2021 }
2022
2023
2024 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2025 assert(exceptionOop->as_register() == r0, "must match");
2026 assert(exceptionPC->as_register() == r3, "must match");
2027
2028 // exception object is not added to oop map by LinearScan
2029 // (LinearScan assumes that no oops are in fixed registers)
2030 info->add_register_oop(exceptionOop);
2031 Runtime1::StubID unwind_id;
2032
2033 // get current pc information
2034 // pc is only needed if the method has an exception handler, the unwind code does not need it.
2035 int pc_for_athrow_offset = __ offset();
2036 InternalAddress pc_for_athrow(__ pc());
2037 __ adr(exceptionPC->as_register(), pc_for_athrow);
2038 add_call_info(pc_for_athrow_offset, info); // for exception handler
2039
2040 __ verify_not_null_oop(r0);
2041 // search an exception handler (r0: exception oop, r3: throwing pc)
2042 if (compilation()->has_fpu_code()) {
2043 unwind_id = Runtime1::handle_exception_id;
2044 } else {
2045 unwind_id = Runtime1::handle_exception_nofpu_id;
2046 }
2047 __ far_call(RuntimeAddress(Runtime1::entry_for(unwind_id)));
2048
2049 // FIXME: enough room for two byte trap ????
2050 __ nop();
2051 }
2052
2053
2054 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) {
2055 assert(exceptionOop->as_register() == r0, "must match");
2056
2057 __ b(_unwind_handler_entry);
2058 }
2059
2060
2061 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) {
2062 Register lreg = left->is_single_cpu() ? left->as_register() : left->as_register_lo();
2063 Register dreg = dest->is_single_cpu() ? dest->as_register() : dest->as_register_lo();
2064
2065 switch (left->type()) {
2066 case T_INT: {
2067 switch (code) {
2068 case lir_shl: __ lslvw (dreg, lreg, count->as_register()); break;
2069 case lir_shr: __ asrvw (dreg, lreg, count->as_register()); break;
2070 case lir_ushr: __ lsrvw (dreg, lreg, count->as_register()); break;
2071 default:
2072 ShouldNotReachHere();
2073 break;
2074 }
2075 break;
2076 case T_LONG:
2077 case T_ADDRESS:
2078 case T_OBJECT:
2079 switch (code) {
2080 case lir_shl: __ lslv (dreg, lreg, count->as_register()); break;
2081 case lir_shr: __ asrv (dreg, lreg, count->as_register()); break;
2082 case lir_ushr: __ lsrv (dreg, lreg, count->as_register()); break;
2083 default:
2084 ShouldNotReachHere();
2085 break;
2086 }
2087 break;
2088 default:
2089 ShouldNotReachHere();
2090 break;
2091 }
2092 }
2093 }
2094
2095
2096 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) {
2097 Register dreg = dest->is_single_cpu() ? dest->as_register() : dest->as_register_lo();
2098 Register lreg = left->is_single_cpu() ? left->as_register() : left->as_register_lo();
2099
2100 switch (left->type()) {
2101 case T_INT: {
2102 switch (code) {
2103 case lir_shl: __ lslw (dreg, lreg, count); break;
2104 case lir_shr: __ asrw (dreg, lreg, count); break;
2105 case lir_ushr: __ lsrw (dreg, lreg, count); break;
2106 default:
2107 ShouldNotReachHere();
2108 break;
2109 }
2110 break;
2111 case T_LONG:
2112 case T_ADDRESS:
2113 case T_OBJECT:
2114 switch (code) {
2115 case lir_shl: __ lsl (dreg, lreg, count); break;
2116 case lir_shr: __ asr (dreg, lreg, count); break;
2117 case lir_ushr: __ lsr (dreg, lreg, count); break;
2118 default:
2119 ShouldNotReachHere();
2120 break;
2121 }
2122 break;
2123 default:
2124 ShouldNotReachHere();
2125 break;
2126 }
2127 }
2128 }
2129
2130
2131 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) {
2132 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
2133 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
2134 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
2135 __ str (r, Address(sp, offset_from_rsp_in_bytes));
2136 }
2137
2138
2139 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) {
2140 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
2141 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
2142 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
2143 __ mov (rscratch1, c);
2144 __ str (rscratch1, Address(sp, offset_from_rsp_in_bytes));
2145 }
2146
2147
2148 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) {
2149 ShouldNotReachHere();
2150 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
2151 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
2152 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
2153 __ lea(rscratch1, __ constant_oop_address(o));
2154 __ str(rscratch1, Address(sp, offset_from_rsp_in_bytes));
2155 }
2156
2157
2158 // This code replaces a call to arraycopy; no exception may
2159 // be thrown in this code, they must be thrown in the System.arraycopy
2160 // activation frame; we could save some checks if this would not be the case
2161 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
2162 ciArrayKlass* default_type = op->expected_type();
2163 Register src = op->src()->as_register();
2164 Register dst = op->dst()->as_register();
2165 Register src_pos = op->src_pos()->as_register();
2166 Register dst_pos = op->dst_pos()->as_register();
2167 Register length = op->length()->as_register();
2168 Register tmp = op->tmp()->as_register();
2169
2170 CodeStub* stub = op->stub();
2171 int flags = op->flags();
2172 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL;
2173 if (basic_type == T_ARRAY) basic_type = T_OBJECT;
2174
2175 // if we don't know anything, just go through the generic arraycopy
2176 if (default_type == NULL // || basic_type == T_OBJECT
2177 ) {
2178 Label done;
2179 assert(src == r1 && src_pos == r2, "mismatch in calling convention");
2180
2181 // Save the arguments in case the generic arraycopy fails and we
2182 // have to fall back to the JNI stub
2183 __ stp(dst, dst_pos, Address(sp, 0*BytesPerWord));
2184 __ stp(length, src_pos, Address(sp, 2*BytesPerWord));
2185 __ str(src, Address(sp, 4*BytesPerWord));
2186
2187 address copyfunc_addr = StubRoutines::generic_arraycopy();
2188 assert(copyfunc_addr != NULL, "generic arraycopy stub required");
2189
2190 // The arguments are in java calling convention so we shift them
2191 // to C convention
2192 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
2193 __ mov(c_rarg0, j_rarg0);
2194 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4);
2195 __ mov(c_rarg1, j_rarg1);
2196 assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
2197 __ mov(c_rarg2, j_rarg2);
2198 assert_different_registers(c_rarg3, j_rarg4);
2199 __ mov(c_rarg3, j_rarg3);
2200 __ mov(c_rarg4, j_rarg4);
2201 #ifndef PRODUCT
2202 if (PrintC1Statistics) {
2203 __ incrementw(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
2204 }
2205 #endif
2206 __ far_call(RuntimeAddress(copyfunc_addr));
2207
2208 __ cbz(r0, *stub->continuation());
2209
2210 // Reload values from the stack so they are where the stub
2211 // expects them.
2212 __ ldp(dst, dst_pos, Address(sp, 0*BytesPerWord));
2213 __ ldp(length, src_pos, Address(sp, 2*BytesPerWord));
2214 __ ldr(src, Address(sp, 4*BytesPerWord));
2215
2216 // r0 is -1^K where K == partial copied count
2217 __ eonw(rscratch1, r0, 0);
2218 // adjust length down and src/end pos up by partial copied count
2219 __ subw(length, length, rscratch1);
2220 __ addw(src_pos, src_pos, rscratch1);
2221 __ addw(dst_pos, dst_pos, rscratch1);
2222 __ b(*stub->entry());
2223
2224 __ bind(*stub->continuation());
2225 return;
2226 }
2227
2228 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point");
2229
2230 int elem_size = type2aelembytes(basic_type);
2231 int shift_amount;
2232 int scale = exact_log2(elem_size);
2233
2234 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes());
2235 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes());
2236 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes());
2237 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes());
2238
2239 // test for NULL
2240 if (flags & LIR_OpArrayCopy::src_null_check) {
2241 __ cbz(src, *stub->entry());
2242 }
2243 if (flags & LIR_OpArrayCopy::dst_null_check) {
2244 __ cbz(dst, *stub->entry());
2245 }
2246
2247 // If the compiler was not able to prove that exact type of the source or the destination
2248 // of the arraycopy is an array type, check at runtime if the source or the destination is
2249 // an instance type.
2250 if (flags & LIR_OpArrayCopy::type_check) {
2251 if (!(flags & LIR_OpArrayCopy::LIR_OpArrayCopy::dst_objarray)) {
2252 __ load_klass(tmp, dst);
2253 __ ldrw(rscratch1, Address(tmp, in_bytes(Klass::layout_helper_offset())));
2254 __ cmpw(rscratch1, Klass::_lh_neutral_value);
2255 __ br(Assembler::GE, *stub->entry());
2256 }
2257
2258 if (!(flags & LIR_OpArrayCopy::LIR_OpArrayCopy::src_objarray)) {
2259 __ load_klass(tmp, src);
2260 __ ldrw(rscratch1, Address(tmp, in_bytes(Klass::layout_helper_offset())));
2261 __ cmpw(rscratch1, Klass::_lh_neutral_value);
2262 __ br(Assembler::GE, *stub->entry());
2263 }
2264 }
2265
2266 // check if negative
2267 if (flags & LIR_OpArrayCopy::src_pos_positive_check) {
2268 __ cmpw(src_pos, 0);
2269 __ br(Assembler::LT, *stub->entry());
2270 }
2271 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) {
2272 __ cmpw(dst_pos, 0);
2273 __ br(Assembler::LT, *stub->entry());
2274 }
2275
2276 if (flags & LIR_OpArrayCopy::length_positive_check) {
2277 __ cmpw(length, 0);
2278 __ br(Assembler::LT, *stub->entry());
2279 }
2280
2281 if (flags & LIR_OpArrayCopy::src_range_check) {
2282 __ addw(tmp, src_pos, length);
2283 __ ldrw(rscratch1, src_length_addr);
2284 __ cmpw(tmp, rscratch1);
2285 __ br(Assembler::HI, *stub->entry());
2286 }
2287 if (flags & LIR_OpArrayCopy::dst_range_check) {
2288 __ addw(tmp, dst_pos, length);
2289 __ ldrw(rscratch1, dst_length_addr);
2290 __ cmpw(tmp, rscratch1);
2291 __ br(Assembler::HI, *stub->entry());
2292 }
2293
2294 if (flags & LIR_OpArrayCopy::type_check) {
2295 // We don't know the array types are compatible
2296 if (basic_type != T_OBJECT) {
2297 // Simple test for basic type arrays
2298 if (UseCompressedClassPointers) {
2299 __ ldrw(tmp, src_klass_addr);
2300 __ ldrw(rscratch1, dst_klass_addr);
2301 __ cmpw(tmp, rscratch1);
2302 } else {
2303 __ ldr(tmp, src_klass_addr);
2304 __ ldr(rscratch1, dst_klass_addr);
2305 __ cmp(tmp, rscratch1);
2306 }
2307 __ br(Assembler::NE, *stub->entry());
2308 } else {
2309 // For object arrays, if src is a sub class of dst then we can
2310 // safely do the copy.
2311 Label cont, slow;
2312
2313 #define PUSH(r1, r2) \
2314 stp(r1, r2, __ pre(sp, -2 * wordSize));
2315
2316 #define POP(r1, r2) \
2317 ldp(r1, r2, __ post(sp, 2 * wordSize));
2318
2319 __ PUSH(src, dst);
2320
2321 __ load_klass(src, src);
2322 __ load_klass(dst, dst);
2323
2324 __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, NULL);
2325
2326 __ PUSH(src, dst);
2327 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
2328 __ POP(src, dst);
2329
2330 __ cbnz(src, cont);
2331
2332 __ bind(slow);
2333 __ POP(src, dst);
2334
2335 address copyfunc_addr = StubRoutines::checkcast_arraycopy();
2336 if (copyfunc_addr != NULL) { // use stub if available
2337 // src is not a sub class of dst so we have to do a
2338 // per-element check.
2339
2340 int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray;
2341 if ((flags & mask) != mask) {
2342 // Check that at least both of them object arrays.
2343 assert(flags & mask, "one of the two should be known to be an object array");
2344
2345 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
2346 __ load_klass(tmp, src);
2347 } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
2348 __ load_klass(tmp, dst);
2349 }
2350 int lh_offset = in_bytes(Klass::layout_helper_offset());
2351 Address klass_lh_addr(tmp, lh_offset);
2352 jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
2353 __ ldrw(rscratch1, klass_lh_addr);
2354 __ mov(rscratch2, objArray_lh);
2355 __ eorw(rscratch1, rscratch1, rscratch2);
2356 __ cbnzw(rscratch1, *stub->entry());
2357 }
2358
2359 // Spill because stubs can use any register they like and it's
2360 // easier to restore just those that we care about.
2361 __ stp(dst, dst_pos, Address(sp, 0*BytesPerWord));
2362 __ stp(length, src_pos, Address(sp, 2*BytesPerWord));
2363 __ str(src, Address(sp, 4*BytesPerWord));
2364
2365 __ lea(c_rarg0, Address(src, src_pos, Address::uxtw(scale)));
2366 __ add(c_rarg0, c_rarg0, arrayOopDesc::base_offset_in_bytes(basic_type));
2367 assert_different_registers(c_rarg0, dst, dst_pos, length);
2368 __ lea(c_rarg1, Address(dst, dst_pos, Address::uxtw(scale)));
2369 __ add(c_rarg1, c_rarg1, arrayOopDesc::base_offset_in_bytes(basic_type));
2370 assert_different_registers(c_rarg1, dst, length);
2371 __ uxtw(c_rarg2, length);
2372 assert_different_registers(c_rarg2, dst);
2373
2374 __ load_klass(c_rarg4, dst);
2375 __ ldr(c_rarg4, Address(c_rarg4, ObjArrayKlass::element_klass_offset()));
2376 __ ldrw(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset()));
2377 __ far_call(RuntimeAddress(copyfunc_addr));
2378
2379 #ifndef PRODUCT
2380 if (PrintC1Statistics) {
2381 Label failed;
2382 __ cbnz(r0, failed);
2383 __ incrementw(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt));
2384 __ bind(failed);
2385 }
2386 #endif
2387
2388 __ cbz(r0, *stub->continuation());
2389
2390 #ifndef PRODUCT
2391 if (PrintC1Statistics) {
2392 __ incrementw(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt));
2393 }
2394 #endif
2395 assert_different_registers(dst, dst_pos, length, src_pos, src, r0, rscratch1);
2396
2397 // Restore previously spilled arguments
2398 __ ldp(dst, dst_pos, Address(sp, 0*BytesPerWord));
2399 __ ldp(length, src_pos, Address(sp, 2*BytesPerWord));
2400 __ ldr(src, Address(sp, 4*BytesPerWord));
2401
2402 // return value is -1^K where K is partial copied count
2403 __ eonw(rscratch1, r0, zr);
2404 // adjust length down and src/end pos up by partial copied count
2405 __ subw(length, length, rscratch1);
2406 __ addw(src_pos, src_pos, rscratch1);
2407 __ addw(dst_pos, dst_pos, rscratch1);
2408 }
2409
2410 __ b(*stub->entry());
2411
2412 __ bind(cont);
2413 __ POP(src, dst);
2414 }
2415 }
2416
2417 #ifdef ASSERT
2418 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) {
2419 // Sanity check the known type with the incoming class. For the
2420 // primitive case the types must match exactly with src.klass and
2421 // dst.klass each exactly matching the default type. For the
2422 // object array case, if no type check is needed then either the
2423 // dst type is exactly the expected type and the src type is a
2424 // subtype which we can't check or src is the same array as dst
2425 // but not necessarily exactly of type default_type.
2426 Label known_ok, halt;
2427 __ mov_metadata(tmp, default_type->constant_encoding());
2428 if (UseCompressedClassPointers) {
2429 __ encode_klass_not_null(tmp);
2430 }
2431
2432 if (basic_type != T_OBJECT) {
2433
2434 if (UseCompressedClassPointers) {
2435 __ ldrw(rscratch1, dst_klass_addr);
2436 __ cmpw(tmp, rscratch1);
2437 } else {
2438 __ ldr(rscratch1, dst_klass_addr);
2439 __ cmp(tmp, rscratch1);
2440 }
2441 __ br(Assembler::NE, halt);
2442 if (UseCompressedClassPointers) {
2443 __ ldrw(rscratch1, src_klass_addr);
2444 __ cmpw(tmp, rscratch1);
2445 } else {
2446 __ ldr(rscratch1, src_klass_addr);
2447 __ cmp(tmp, rscratch1);
2448 }
2449 __ br(Assembler::EQ, known_ok);
2450 } else {
2451 if (UseCompressedClassPointers) {
2452 __ ldrw(rscratch1, dst_klass_addr);
2453 __ cmpw(tmp, rscratch1);
2454 } else {
2455 __ ldr(rscratch1, dst_klass_addr);
2456 __ cmp(tmp, rscratch1);
2457 }
2458 __ br(Assembler::EQ, known_ok);
2459 __ cmp(src, dst);
2460 __ br(Assembler::EQ, known_ok);
2461 }
2462 __ bind(halt);
2463 __ stop("incorrect type information in arraycopy");
2464 __ bind(known_ok);
2465 }
2466 #endif
2467
2468 #ifndef PRODUCT
2469 if (PrintC1Statistics) {
2470 __ incrementw(ExternalAddress(Runtime1::arraycopy_count_address(basic_type)));
2471 }
2472 #endif
2473
2474 __ lea(c_rarg0, Address(src, src_pos, Address::uxtw(scale)));
2475 __ add(c_rarg0, c_rarg0, arrayOopDesc::base_offset_in_bytes(basic_type));
2476 assert_different_registers(c_rarg0, dst, dst_pos, length);
2477 __ lea(c_rarg1, Address(dst, dst_pos, Address::uxtw(scale)));
2478 __ add(c_rarg1, c_rarg1, arrayOopDesc::base_offset_in_bytes(basic_type));
2479 assert_different_registers(c_rarg1, dst, length);
2480 __ uxtw(c_rarg2, length);
2481 assert_different_registers(c_rarg2, dst);
2482
2483 bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0;
2484 bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0;
2485 const char *name;
2486 address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false);
2487
2488 CodeBlob *cb = CodeCache::find_blob(entry);
2489 if (cb) {
2490 __ far_call(RuntimeAddress(entry));
2491 } else {
2492 __ call_VM_leaf(entry, 3);
2493 }
2494
2495 __ bind(*stub->continuation());
2496 }
2497
2498
2499
2500
2501 void LIR_Assembler::emit_lock(LIR_OpLock* op) {
2502 Register obj = op->obj_opr()->as_register(); // may not be an oop
2503 Register hdr = op->hdr_opr()->as_register();
2504 Register lock = op->lock_opr()->as_register();
2505 if (!UseFastLocking) {
2506 __ b(*op->stub()->entry());
2507 } else if (op->code() == lir_lock) {
2508 Register scratch = noreg;
2509 if (UseBiasedLocking) {
2510 scratch = op->scratch_opr()->as_register();
2511 }
2512 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
2513 // add debug info for NullPointerException only if one is possible
2514 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry());
2515 if (op->info() != NULL) {
2516 add_debug_info_for_null_check(null_check_offset, op->info());
2517 }
2518 // done
2519 } else if (op->code() == lir_unlock) {
2520 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
2521 __ unlock_object(hdr, obj, lock, *op->stub()->entry());
2522 } else {
2523 Unimplemented();
2524 }
2525 __ bind(*op->stub()->continuation());
2526 }
2527
2528
2529 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) {
2530 ciMethod* method = op->profiled_method();
2531 int bci = op->profiled_bci();
2532 ciMethod* callee = op->profiled_callee();
2533
2534 // Update counter for all call types
2535 ciMethodData* md = method->method_data_or_null();
2536 assert(md != NULL, "Sanity");
2537 ciProfileData* data = md->bci_to_data(bci);
2538 assert(data != NULL && data->is_CounterData(), "need CounterData for calls");
2539 assert(op->mdo()->is_single_cpu(), "mdo must be allocated");
2540 Register mdo = op->mdo()->as_register();
2541 __ mov_metadata(mdo, md->constant_encoding());
2542 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
2543 // Perform additional virtual call profiling for invokevirtual and
2544 // invokeinterface bytecodes
2545 if (op->should_profile_receiver_type()) {
2546 assert(op->recv()->is_single_cpu(), "recv must be allocated");
2547 Register recv = op->recv()->as_register();
2548 assert_different_registers(mdo, recv);
2549 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls");
2550 ciKlass* known_klass = op->known_holder();
2551 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) {
2552 // We know the type that will be seen at this call site; we can
2553 // statically update the MethodData* rather than needing to do
2554 // dynamic tests on the receiver type
2555
2556 // NOTE: we should probably put a lock around this search to
2557 // avoid collisions by concurrent compilations
2558 ciVirtualCallData* vc_data = (ciVirtualCallData*) data;
2559 uint i;
2560 for (i = 0; i < VirtualCallData::row_limit(); i++) {
2561 ciKlass* receiver = vc_data->receiver(i);
2562 if (known_klass->equals(receiver)) {
2563 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
2564 __ addptr(data_addr, DataLayout::counter_increment);
2565 return;
2566 }
2567 }
2568
2569 // Receiver type not found in profile data; select an empty slot
2570
2571 // Note that this is less efficient than it should be because it
2572 // always does a write to the receiver part of the
2573 // VirtualCallData rather than just the first time
2574 for (i = 0; i < VirtualCallData::row_limit(); i++) {
2575 ciKlass* receiver = vc_data->receiver(i);
2576 if (receiver == NULL) {
2577 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)));
2578 __ mov_metadata(rscratch1, known_klass->constant_encoding());
2579 __ lea(rscratch2, recv_addr);
2580 __ str(rscratch1, Address(rscratch2));
2581 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
2582 __ addptr(data_addr, DataLayout::counter_increment);
2583 return;
2584 }
2585 }
2586 } else {
2587 __ load_klass(recv, recv);
2588 Label update_done;
2589 type_profile_helper(mdo, md, data, recv, &update_done);
2590 // Receiver did not match any saved receiver and there is no empty row for it.
2591 // Increment total counter to indicate polymorphic case.
2592 __ addptr(counter_addr, DataLayout::counter_increment);
2593
2594 __ bind(update_done);
2595 }
2596 } else {
2597 // Static call
2598 __ addptr(counter_addr, DataLayout::counter_increment);
2599 }
2600 }
2601
2602
2603 void LIR_Assembler::emit_delay(LIR_OpDelay*) {
2604 Unimplemented();
2605 }
2606
2607
2608 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) {
2609 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no));
2610 }
2611
2612 void LIR_Assembler::emit_updatecrc32(LIR_OpUpdateCRC32* op) {
2613 assert(op->crc()->is_single_cpu(), "crc must be register");
2614 assert(op->val()->is_single_cpu(), "byte value must be register");
2615 assert(op->result_opr()->is_single_cpu(), "result must be register");
2616 Register crc = op->crc()->as_register();
2617 Register val = op->val()->as_register();
2618 Register res = op->result_opr()->as_register();
2619
2620 assert_different_registers(val, crc, res);
2621 unsigned long offset;
2622 __ adrp(res, ExternalAddress(StubRoutines::crc_table_addr()), offset);
2623 if (offset) __ add(res, res, offset);
2624
2625 __ mvnw(crc, crc); // ~crc
2626 __ update_byte_crc32(crc, val, res);
2627 __ mvnw(res, crc); // ~crc
2628 }
2629
2630 void LIR_Assembler::emit_profile_type(LIR_OpProfileType* op) {
2631 COMMENT("emit_profile_type {");
2632 Register obj = op->obj()->as_register();
2633 Register tmp = op->tmp()->as_pointer_register();
2634 Address mdo_addr = as_Address(op->mdp()->as_address_ptr());
2635 ciKlass* exact_klass = op->exact_klass();
2636 intptr_t current_klass = op->current_klass();
2637 bool not_null = op->not_null();
2638 bool no_conflict = op->no_conflict();
2639
2640 Label update, next, none;
2641
2642 bool do_null = !not_null;
2643 bool exact_klass_set = exact_klass != NULL && ciTypeEntries::valid_ciklass(current_klass) == exact_klass;
2644 bool do_update = !TypeEntries::is_type_unknown(current_klass) && !exact_klass_set;
2645
2646 assert(do_null || do_update, "why are we here?");
2647 assert(!TypeEntries::was_null_seen(current_klass) || do_update, "why are we here?");
2648 assert(mdo_addr.base() != rscratch1, "wrong register");
2649
2650 __ verify_oop(obj);
2651
2652 if (tmp != obj) {
2653 __ mov(tmp, obj);
2654 }
2655 if (do_null) {
2656 __ cbnz(tmp, update);
2657 if (!TypeEntries::was_null_seen(current_klass)) {
2658 __ ldr(rscratch2, mdo_addr);
2659 __ orr(rscratch2, rscratch2, TypeEntries::null_seen);
2660 __ str(rscratch2, mdo_addr);
2661 }
2662 if (do_update) {
2663 #ifndef ASSERT
2664 __ b(next);
2665 }
2666 #else
2667 __ b(next);
2668 }
2669 } else {
2670 __ cbnz(tmp, update);
2671 __ stop("unexpected null obj");
2672 #endif
2673 }
2674
2675 __ bind(update);
2676
2677 if (do_update) {
2678 #ifdef ASSERT
2679 if (exact_klass != NULL) {
2680 Label ok;
2681 __ load_klass(tmp, tmp);
2682 __ mov_metadata(rscratch1, exact_klass->constant_encoding());
2683 __ eor(rscratch1, tmp, rscratch1);
2684 __ cbz(rscratch1, ok);
2685 __ stop("exact klass and actual klass differ");
2686 __ bind(ok);
2687 }
2688 #endif
2689 if (!no_conflict) {
2690 if (exact_klass == NULL || TypeEntries::is_type_none(current_klass)) {
2691 if (exact_klass != NULL) {
2692 __ mov_metadata(tmp, exact_klass->constant_encoding());
2693 } else {
2694 __ load_klass(tmp, tmp);
2695 }
2696
2697 __ ldr(rscratch2, mdo_addr);
2698 __ eor(tmp, tmp, rscratch2);
2699 __ andr(rscratch1, tmp, TypeEntries::type_klass_mask);
2700 // klass seen before, nothing to do. The unknown bit may have been
2701 // set already but no need to check.
2702 __ cbz(rscratch1, next);
2703
2704 __ tbnz(tmp, exact_log2(TypeEntries::type_unknown), next); // already unknown. Nothing to do anymore.
2705
2706 if (TypeEntries::is_type_none(current_klass)) {
2707 __ cbz(rscratch2, none);
2708 __ cmp(rscratch2, TypeEntries::null_seen);
2709 __ br(Assembler::EQ, none);
2710 // There is a chance that the checks above (re-reading profiling
2711 // data from memory) fail if another thread has just set the
2712 // profiling to this obj's klass
2713 __ dmb(Assembler::ISHLD);
2714 __ ldr(rscratch2, mdo_addr);
2715 __ eor(tmp, tmp, rscratch2);
2716 __ andr(rscratch1, tmp, TypeEntries::type_klass_mask);
2717 __ cbz(rscratch1, next);
2718 }
2719 } else {
2720 assert(ciTypeEntries::valid_ciklass(current_klass) != NULL &&
2721 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "conflict only");
2722
2723 __ ldr(tmp, mdo_addr);
2724 __ tbnz(tmp, exact_log2(TypeEntries::type_unknown), next); // already unknown. Nothing to do anymore.
2725 }
2726
2727 // different than before. Cannot keep accurate profile.
2728 __ ldr(rscratch2, mdo_addr);
2729 __ orr(rscratch2, rscratch2, TypeEntries::type_unknown);
2730 __ str(rscratch2, mdo_addr);
2731
2732 if (TypeEntries::is_type_none(current_klass)) {
2733 __ b(next);
2734
2735 __ bind(none);
2736 // first time here. Set profile type.
2737 __ str(tmp, mdo_addr);
2738 }
2739 } else {
2740 // There's a single possible klass at this profile point
2741 assert(exact_klass != NULL, "should be");
2742 if (TypeEntries::is_type_none(current_klass)) {
2743 __ mov_metadata(tmp, exact_klass->constant_encoding());
2744 __ ldr(rscratch2, mdo_addr);
2745 __ eor(tmp, tmp, rscratch2);
2746 __ andr(rscratch1, tmp, TypeEntries::type_klass_mask);
2747 __ cbz(rscratch1, next);
2748 #ifdef ASSERT
2749 {
2750 Label ok;
2751 __ ldr(rscratch1, mdo_addr);
2752 __ cbz(rscratch1, ok);
2753 __ cmp(rscratch1, TypeEntries::null_seen);
2754 __ br(Assembler::EQ, ok);
2755 // may have been set by another thread
2756 __ dmb(Assembler::ISHLD);
2757 __ mov_metadata(rscratch1, exact_klass->constant_encoding());
2758 __ ldr(rscratch2, mdo_addr);
2759 __ eor(rscratch2, rscratch1, rscratch2);
2760 __ andr(rscratch2, rscratch2, TypeEntries::type_mask);
2761 __ cbz(rscratch2, ok);
2762
2763 __ stop("unexpected profiling mismatch");
2764 __ bind(ok);
2765 }
2766 #endif
2767 // first time here. Set profile type.
2768 __ ldr(tmp, mdo_addr);
2769 } else {
2770 assert(ciTypeEntries::valid_ciklass(current_klass) != NULL &&
2771 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "inconsistent");
2772
2773 __ ldr(tmp, mdo_addr);
2774 __ tbnz(tmp, exact_log2(TypeEntries::type_unknown), next); // already unknown. Nothing to do anymore.
2775
2776 __ orr(tmp, tmp, TypeEntries::type_unknown);
2777 __ str(tmp, mdo_addr);
2778 // FIXME: Write barrier needed here?
2779 }
2780 }
2781
2782 __ bind(next);
2783 }
2784 COMMENT("} emit_profile_type");
2785 }
2786
2787
2788 void LIR_Assembler::align_backward_branch_target() {
2789 }
2790
2791
2792 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) {
2793 if (left->is_single_cpu()) {
2794 assert(dest->is_single_cpu(), "expect single result reg");
2795 __ negw(dest->as_register(), left->as_register());
2796 } else if (left->is_double_cpu()) {
2797 assert(dest->is_double_cpu(), "expect double result reg");
2798 __ neg(dest->as_register_lo(), left->as_register_lo());
2799 } else if (left->is_single_fpu()) {
2800 assert(dest->is_single_fpu(), "expect single float result reg");
2801 __ fnegs(dest->as_float_reg(), left->as_float_reg());
2802 } else {
2803 assert(left->is_double_fpu(), "expect double float operand reg");
2804 assert(dest->is_double_fpu(), "expect double float result reg");
2805 __ fnegd(dest->as_double_reg(), left->as_double_reg());
2806 }
2807 }
2808
2809
2810 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) {
2811 __ lea(dest->as_register_lo(), as_Address(addr->as_address_ptr()));
2812 }
2813
2814
2815 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) {
2816 assert(!tmp->is_valid(), "don't need temporary");
2817
2818 CodeBlob *cb = CodeCache::find_blob(dest);
2819 if (cb) {
2820 __ far_call(RuntimeAddress(dest));
2821 } else {
2822 __ mov(rscratch1, RuntimeAddress(dest));
2823 int len = args->length();
2824 int type = 0;
2825 if (! result->is_illegal()) {
2826 switch (result->type()) {
2827 case T_VOID:
2828 type = 0;
2829 break;
2830 case T_INT:
2831 case T_LONG:
2832 case T_OBJECT:
2833 type = 1;
2834 break;
2835 case T_FLOAT:
2836 type = 2;
2837 break;
2838 case T_DOUBLE:
2839 type = 3;
2840 break;
2841 default:
2842 ShouldNotReachHere();
2843 break;
2844 }
2845 }
2846 int num_gpargs = 0;
2847 int num_fpargs = 0;
2848 for (int i = 0; i < args->length(); i++) {
2849 LIR_Opr arg = args->at(i);
2850 if (arg->type() == T_FLOAT || arg->type() == T_DOUBLE) {
2851 num_fpargs++;
2852 } else {
2853 num_gpargs++;
2854 }
2855 }
2856 __ blrt(rscratch1, num_gpargs, num_fpargs, type);
2857 }
2858
2859 if (info != NULL) {
2860 add_call_info_here(info);
2861 }
2862 __ maybe_isb();
2863 }
2864
2865 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) {
2866 if (dest->is_address() || src->is_address()) {
2867 move_op(src, dest, type, lir_patch_none, info,
2868 /*pop_fpu_stack*/false, /*unaligned*/false, /*wide*/false);
2869 } else {
2870 ShouldNotReachHere();
2871 }
2872 }
2873
2874 #ifdef ASSERT
2875 // emit run-time assertion
2876 void LIR_Assembler::emit_assert(LIR_OpAssert* op) {
2877 assert(op->code() == lir_assert, "must be");
2878
2879 if (op->in_opr1()->is_valid()) {
2880 assert(op->in_opr2()->is_valid(), "both operands must be valid");
2881 comp_op(op->condition(), op->in_opr1(), op->in_opr2(), op);
2882 } else {
2883 assert(op->in_opr2()->is_illegal(), "both operands must be illegal");
2884 assert(op->condition() == lir_cond_always, "no other conditions allowed");
2885 }
2886
2887 Label ok;
2888 if (op->condition() != lir_cond_always) {
2889 Assembler::Condition acond = Assembler::AL;
2890 switch (op->condition()) {
2891 case lir_cond_equal: acond = Assembler::EQ; break;
2892 case lir_cond_notEqual: acond = Assembler::NE; break;
2893 case lir_cond_less: acond = Assembler::LT; break;
2894 case lir_cond_lessEqual: acond = Assembler::LE; break;
2895 case lir_cond_greaterEqual: acond = Assembler::GE; break;
2896 case lir_cond_greater: acond = Assembler::GT; break;
2897 case lir_cond_belowEqual: acond = Assembler::LS; break;
2898 case lir_cond_aboveEqual: acond = Assembler::HS; break;
2899 default: ShouldNotReachHere();
2900 }
2901 __ br(acond, ok);
2902 }
2903 if (op->halt()) {
2904 const char* str = __ code_string(op->msg());
2905 __ stop(str);
2906 } else {
2907 breakpoint();
2908 }
2909 __ bind(ok);
2910 }
2911 #endif
2912
2913 #ifndef PRODUCT
2914 #define COMMENT(x) do { __ block_comment(x); } while (0)
2915 #else
2916 #define COMMENT(x)
2917 #endif
2918
2919 void LIR_Assembler::membar() {
2920 COMMENT("membar");
2921 __ membar(MacroAssembler::AnyAny);
2922 }
2923
2924 void LIR_Assembler::membar_acquire() {
2925 __ membar(Assembler::LoadLoad|Assembler::LoadStore);
2926 }
2927
2928 void LIR_Assembler::membar_release() {
2929 __ membar(Assembler::LoadStore|Assembler::StoreStore);
2930 }
2931
2932 void LIR_Assembler::membar_loadload() {
2933 __ membar(Assembler::LoadLoad);
2934 }
2935
2936 void LIR_Assembler::membar_storestore() {
2937 __ membar(MacroAssembler::StoreStore);
2938 }
2939
2940 void LIR_Assembler::membar_loadstore() { __ membar(MacroAssembler::LoadStore); }
2941
2942 void LIR_Assembler::membar_storeload() { __ membar(MacroAssembler::StoreLoad); }
2943
2944 void LIR_Assembler::on_spin_wait() {
2945 Unimplemented();
2946 }
2947
2948 void LIR_Assembler::get_thread(LIR_Opr result_reg) {
2949 __ mov(result_reg->as_register(), rthread);
2950 }
2951
2952
2953 void LIR_Assembler::peephole(LIR_List *lir) {
2954 #if 0
2955 if (tableswitch_count >= max_tableswitches)
2956 return;
2957
2958 /*
2959 This finite-state automaton recognizes sequences of compare-and-
2960 branch instructions. We will turn them into a tableswitch. You
2961 could argue that C1 really shouldn't be doing this sort of
2962 optimization, but without it the code is really horrible.
2963 */
2964
2965 enum { start_s, cmp1_s, beq_s, cmp_s } state;
2966 int first_key, last_key = -2147483648;
2967 int next_key = 0;
2968 int start_insn = -1;
2969 int last_insn = -1;
2970 Register reg = noreg;
2971 LIR_Opr reg_opr;
2972 state = start_s;
2973
2974 LIR_OpList* inst = lir->instructions_list();
2975 for (int i = 0; i < inst->length(); i++) {
2976 LIR_Op* op = inst->at(i);
2977 switch (state) {
2978 case start_s:
2979 first_key = -1;
2980 start_insn = i;
2981 switch (op->code()) {
2982 case lir_cmp:
2983 LIR_Opr opr1 = op->as_Op2()->in_opr1();
2984 LIR_Opr opr2 = op->as_Op2()->in_opr2();
2985 if (opr1->is_cpu_register() && opr1->is_single_cpu()
2986 && opr2->is_constant()
2987 && opr2->type() == T_INT) {
2988 reg_opr = opr1;
2989 reg = opr1->as_register();
2990 first_key = opr2->as_constant_ptr()->as_jint();
2991 next_key = first_key + 1;
2992 state = cmp_s;
2993 goto next_state;
2994 }
2995 break;
2996 }
2997 break;
2998 case cmp_s:
2999 switch (op->code()) {
3000 case lir_branch:
3001 if (op->as_OpBranch()->cond() == lir_cond_equal) {
3002 state = beq_s;
3003 last_insn = i;
3004 goto next_state;
3005 }
3006 }
3007 state = start_s;
3008 break;
3009 case beq_s:
3010 switch (op->code()) {
3011 case lir_cmp: {
3012 LIR_Opr opr1 = op->as_Op2()->in_opr1();
3013 LIR_Opr opr2 = op->as_Op2()->in_opr2();
3014 if (opr1->is_cpu_register() && opr1->is_single_cpu()
3015 && opr1->as_register() == reg
3016 && opr2->is_constant()
3017 && opr2->type() == T_INT
3018 && opr2->as_constant_ptr()->as_jint() == next_key) {
3019 last_key = next_key;
3020 next_key++;
3021 state = cmp_s;
3022 goto next_state;
3023 }
3024 }
3025 }
3026 last_key = next_key;
3027 state = start_s;
3028 break;
3029 default:
3030 assert(false, "impossible state");
3031 }
3032 if (state == start_s) {
3033 if (first_key < last_key - 5L && reg != noreg) {
3034 {
3035 // printf("found run register %d starting at insn %d low value %d high value %d\n",
3036 // reg->encoding(),
3037 // start_insn, first_key, last_key);
3038 // for (int i = 0; i < inst->length(); i++) {
3039 // inst->at(i)->print();
3040 // tty->print("\n");
3041 // }
3042 // tty->print("\n");
3043 }
3044
3045 struct tableswitch *sw = &switches[tableswitch_count];
3046 sw->_insn_index = start_insn, sw->_first_key = first_key,
3047 sw->_last_key = last_key, sw->_reg = reg;
3048 inst->insert_before(last_insn + 1, new LIR_OpLabel(&sw->_after));
3049 {
3050 // Insert the new table of branches
3051 int offset = last_insn;
3052 for (int n = first_key; n < last_key; n++) {
3053 inst->insert_before
3054 (last_insn + 1,
3055 new LIR_OpBranch(lir_cond_always, T_ILLEGAL,
3056 inst->at(offset)->as_OpBranch()->label()));
3057 offset -= 2, i++;
3058 }
3059 }
3060 // Delete all the old compare-and-branch instructions
3061 for (int n = first_key; n < last_key; n++) {
3062 inst->remove_at(start_insn);
3063 inst->remove_at(start_insn);
3064 }
3065 // Insert the tableswitch instruction
3066 inst->insert_before(start_insn,
3067 new LIR_Op2(lir_cmp, lir_cond_always,
3068 LIR_OprFact::intConst(tableswitch_count),
3069 reg_opr));
3070 inst->insert_before(start_insn + 1, new LIR_OpLabel(&sw->_branches));
3071 tableswitch_count++;
3072 }
3073 reg = noreg;
3074 last_key = -2147483648;
3075 }
3076 next_state:
3077 ;
3078 }
3079 #endif
3080 }
3081
3082 void LIR_Assembler::atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp_op) {
3083 Address addr = as_Address(src->as_address_ptr());
3084 BasicType type = src->type();
3085 bool is_oop = type == T_OBJECT || type == T_ARRAY;
3086
3087 void (MacroAssembler::* add)(Register prev, RegisterOrConstant incr, Register addr);
3088 void (MacroAssembler::* xchg)(Register prev, Register newv, Register addr);
3089
3090 switch(type) {
3091 case T_INT:
3092 xchg = &MacroAssembler::atomic_xchgalw;
3093 add = &MacroAssembler::atomic_addalw;
3094 break;
3095 case T_LONG:
3096 xchg = &MacroAssembler::atomic_xchgal;
3097 add = &MacroAssembler::atomic_addal;
3098 break;
3099 case T_OBJECT:
3100 case T_ARRAY:
3101 if (UseCompressedOops) {
3102 xchg = &MacroAssembler::atomic_xchgalw;
3103 add = &MacroAssembler::atomic_addalw;
3104 } else {
3105 xchg = &MacroAssembler::atomic_xchgal;
3106 add = &MacroAssembler::atomic_addal;
3107 }
3108 break;
3109 default:
3110 ShouldNotReachHere();
3111 xchg = &MacroAssembler::atomic_xchgal;
3112 add = &MacroAssembler::atomic_addal; // unreachable
3113 }
3114
3115 switch (code) {
3116 case lir_xadd:
3117 {
3118 RegisterOrConstant inc;
3119 Register tmp = as_reg(tmp_op);
3120 Register dst = as_reg(dest);
3121 if (data->is_constant()) {
3122 inc = RegisterOrConstant(as_long(data));
3123 assert_different_registers(dst, addr.base(), tmp,
3124 rscratch1, rscratch2);
3125 } else {
3126 inc = RegisterOrConstant(as_reg(data));
3127 assert_different_registers(inc.as_register(), dst, addr.base(), tmp,
3128 rscratch1, rscratch2);
3129 }
3130 __ lea(tmp, addr);
3131 (_masm->*add)(dst, inc, tmp);
3132 break;
3133 }
3134 case lir_xchg:
3135 {
3136 Register tmp = tmp_op->as_register();
3137 Register obj = as_reg(data);
3138 Register dst = as_reg(dest);
3139 if (is_oop && UseCompressedOops) {
3140 __ encode_heap_oop(rscratch2, obj);
3141 obj = rscratch2;
3142 }
3143 assert_different_registers(obj, addr.base(), tmp, rscratch1, dst);
3144 __ lea(tmp, addr);
3145 (_masm->*xchg)(dst, obj, tmp);
3146 if (is_oop && UseCompressedOops) {
3147 __ decode_heap_oop(dst);
3148 }
3149 }
3150 break;
3151 default:
3152 ShouldNotReachHere();
3153 }
3154 __ membar(__ AnyAny);
3155 }
3156
3157 #undef __