1 /*
2 * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "c1/c1_Compilation.hpp"
29 #include "c1/c1_LIRAssembler.hpp"
30 #include "c1/c1_MacroAssembler.hpp"
31 #include "c1/c1_Runtime1.hpp"
32 #include "c1/c1_ValueStack.hpp"
33 #include "ci/ciArrayKlass.hpp"
34 #include "ci/ciInstance.hpp"
35 #include "gc/shared/barrierSet.hpp"
36 #include "gc/shared/cardTableModRefBS.hpp"
37 #include "gc/shared/collectedHeap.hpp"
38 #include "nativeInst_x86.hpp"
39 #include "oops/objArrayKlass.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "vmreg_x86.inline.hpp"
42
43
44 // These masks are used to provide 128-bit aligned bitmasks to the XMM
45 // instructions, to allow sign-masking or sign-bit flipping. They allow
46 // fast versions of NegF/NegD and AbsF/AbsD.
47
48 // Note: 'double' and 'long long' have 32-bits alignment on x86.
49 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
50 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
51 // of 128-bits operands for SSE instructions.
52 jlong *operand = (jlong*)(((intptr_t)adr) & ((intptr_t)(~0xF)));
53 // Store the value to a 128-bits operand.
54 operand[0] = lo;
55 operand[1] = hi;
56 return operand;
57 }
58
59 // Buffer for 128-bits masks used by SSE instructions.
60 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment)
61
62 // Static initialization during VM startup.
63 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF));
64 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF));
65 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], (jlong)UCONST64(0x8000000080000000), (jlong)UCONST64(0x8000000080000000));
66 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], (jlong)UCONST64(0x8000000000000000), (jlong)UCONST64(0x8000000000000000));
67
68
69
70 NEEDS_CLEANUP // remove this definitions ?
71 const Register IC_Klass = rax; // where the IC klass is cached
72 const Register SYNC_header = rax; // synchronization header
73 const Register SHIFT_count = rcx; // where count for shift operations must be
74
75 #define __ _masm->
76
77
78 static void select_different_registers(Register preserve,
79 Register extra,
80 Register &tmp1,
81 Register &tmp2) {
82 if (tmp1 == preserve) {
83 assert_different_registers(tmp1, tmp2, extra);
84 tmp1 = extra;
85 } else if (tmp2 == preserve) {
86 assert_different_registers(tmp1, tmp2, extra);
87 tmp2 = extra;
88 }
89 assert_different_registers(preserve, tmp1, tmp2);
90 }
91
92
93
94 static void select_different_registers(Register preserve,
95 Register extra,
96 Register &tmp1,
97 Register &tmp2,
98 Register &tmp3) {
99 if (tmp1 == preserve) {
100 assert_different_registers(tmp1, tmp2, tmp3, extra);
101 tmp1 = extra;
102 } else if (tmp2 == preserve) {
103 assert_different_registers(tmp1, tmp2, tmp3, extra);
104 tmp2 = extra;
105 } else if (tmp3 == preserve) {
106 assert_different_registers(tmp1, tmp2, tmp3, extra);
107 tmp3 = extra;
108 }
109 assert_different_registers(preserve, tmp1, tmp2, tmp3);
110 }
111
112
113
114 bool LIR_Assembler::is_small_constant(LIR_Opr opr) {
115 if (opr->is_constant()) {
116 LIR_Const* constant = opr->as_constant_ptr();
117 switch (constant->type()) {
118 case T_INT: {
119 return true;
120 }
121
122 default:
123 return false;
124 }
125 }
126 return false;
127 }
128
129
130 LIR_Opr LIR_Assembler::receiverOpr() {
131 return FrameMap::receiver_opr;
132 }
133
134 LIR_Opr LIR_Assembler::osrBufferPointer() {
135 return FrameMap::as_pointer_opr(receiverOpr()->as_register());
136 }
137
138 //--------------fpu register translations-----------------------
139
140
141 address LIR_Assembler::float_constant(float f) {
142 address const_addr = __ float_constant(f);
143 if (const_addr == NULL) {
144 bailout("const section overflow");
145 return __ code()->consts()->start();
146 } else {
147 return const_addr;
148 }
149 }
150
151
152 address LIR_Assembler::double_constant(double d) {
153 address const_addr = __ double_constant(d);
154 if (const_addr == NULL) {
155 bailout("const section overflow");
156 return __ code()->consts()->start();
157 } else {
158 return const_addr;
159 }
160 }
161
162
163 void LIR_Assembler::set_24bit_FPU() {
164 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24()));
165 }
166
167 void LIR_Assembler::reset_FPU() {
168 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
169 }
170
171 void LIR_Assembler::fpop() {
172 __ fpop();
173 }
174
175 void LIR_Assembler::fxch(int i) {
176 __ fxch(i);
177 }
178
179 void LIR_Assembler::fld(int i) {
180 __ fld_s(i);
181 }
182
183 void LIR_Assembler::ffree(int i) {
184 __ ffree(i);
185 }
186
187 void LIR_Assembler::breakpoint() {
188 __ int3();
189 }
190
191 void LIR_Assembler::push(LIR_Opr opr) {
192 if (opr->is_single_cpu()) {
193 __ push_reg(opr->as_register());
194 } else if (opr->is_double_cpu()) {
195 NOT_LP64(__ push_reg(opr->as_register_hi()));
196 __ push_reg(opr->as_register_lo());
197 } else if (opr->is_stack()) {
198 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix()));
199 } else if (opr->is_constant()) {
200 LIR_Const* const_opr = opr->as_constant_ptr();
201 if (const_opr->type() == T_OBJECT) {
202 __ push_oop(const_opr->as_jobject());
203 } else if (const_opr->type() == T_INT) {
204 __ push_jint(const_opr->as_jint());
205 } else {
206 ShouldNotReachHere();
207 }
208
209 } else {
210 ShouldNotReachHere();
211 }
212 }
213
214 void LIR_Assembler::pop(LIR_Opr opr) {
215 if (opr->is_single_cpu()) {
216 __ pop_reg(opr->as_register());
217 } else {
218 ShouldNotReachHere();
219 }
220 }
221
222 bool LIR_Assembler::is_literal_address(LIR_Address* addr) {
223 return addr->base()->is_illegal() && addr->index()->is_illegal();
224 }
225
226 //-------------------------------------------
227
228 Address LIR_Assembler::as_Address(LIR_Address* addr) {
229 return as_Address(addr, rscratch1);
230 }
231
232 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) {
233 if (addr->base()->is_illegal()) {
234 assert(addr->index()->is_illegal(), "must be illegal too");
235 AddressLiteral laddr((address)addr->disp(), relocInfo::none);
236 if (! __ reachable(laddr)) {
237 __ movptr(tmp, laddr.addr());
238 Address res(tmp, 0);
239 return res;
240 } else {
241 return __ as_Address(laddr);
242 }
243 }
244
245 Register base = addr->base()->as_pointer_register();
246
247 if (addr->index()->is_illegal()) {
248 return Address( base, addr->disp());
249 } else if (addr->index()->is_cpu_register()) {
250 Register index = addr->index()->as_pointer_register();
251 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp());
252 } else if (addr->index()->is_constant()) {
253 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp();
254 assert(Assembler::is_simm32(addr_offset), "must be");
255
256 return Address(base, addr_offset);
257 } else {
258 Unimplemented();
259 return Address();
260 }
261 }
262
263
264 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) {
265 Address base = as_Address(addr);
266 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord);
267 }
268
269
270 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) {
271 return as_Address(addr);
272 }
273
274
275 void LIR_Assembler::osr_entry() {
276 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset());
277 BlockBegin* osr_entry = compilation()->hir()->osr_entry();
278 ValueStack* entry_state = osr_entry->state();
279 int number_of_locks = entry_state->locks_size();
280
281 // we jump here if osr happens with the interpreter
282 // state set up to continue at the beginning of the
283 // loop that triggered osr - in particular, we have
284 // the following registers setup:
285 //
286 // rcx: osr buffer
287 //
288
289 // build frame
290 ciMethod* m = compilation()->method();
291 __ build_frame(initial_frame_size_in_bytes(), bang_size_in_bytes());
292
293 // OSR buffer is
294 //
295 // locals[nlocals-1..0]
296 // monitors[0..number_of_locks]
297 //
298 // locals is a direct copy of the interpreter frame so in the osr buffer
299 // so first slot in the local array is the last local from the interpreter
300 // and last slot is local[0] (receiver) from the interpreter
301 //
302 // Similarly with locks. The first lock slot in the osr buffer is the nth lock
303 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock
304 // in the interpreter frame (the method lock if a sync method)
305
306 // Initialize monitors in the compiled activation.
307 // rcx: pointer to osr buffer
308 //
309 // All other registers are dead at this point and the locals will be
310 // copied into place by code emitted in the IR.
311
312 Register OSR_buf = osrBufferPointer()->as_pointer_register();
313 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
314 int monitor_offset = BytesPerWord * method()->max_locals() +
315 (BasicObjectLock::size() * BytesPerWord) * (number_of_locks - 1);
316 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in
317 // the OSR buffer using 2 word entries: first the lock and then
318 // the oop.
319 for (int i = 0; i < number_of_locks; i++) {
320 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord);
321 #ifdef ASSERT
322 // verify the interpreter's monitor has a non-null object
323 {
324 Label L;
325 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD);
326 __ jcc(Assembler::notZero, L);
327 __ stop("locked object is NULL");
328 __ bind(L);
329 }
330 #endif
331 __ movptr(rbx, Address(OSR_buf, slot_offset + 0));
332 __ movptr(frame_map()->address_for_monitor_lock(i), rbx);
333 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord));
334 __ movptr(frame_map()->address_for_monitor_object(i), rbx);
335 }
336 }
337 }
338
339
340 // inline cache check; done before the frame is built.
341 int LIR_Assembler::check_icache() {
342 Register receiver = FrameMap::receiver_opr->as_register();
343 Register ic_klass = IC_Klass;
344 const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9);
345 const bool do_post_padding = VerifyOops || UseCompressedClassPointers;
346 if (!do_post_padding) {
347 // insert some nops so that the verified entry point is aligned on CodeEntryAlignment
348 __ align(CodeEntryAlignment, __ offset() + ic_cmp_size);
349 }
350 int offset = __ offset();
351 __ inline_cache_check(receiver, IC_Klass);
352 assert(__ offset() % CodeEntryAlignment == 0 || do_post_padding, "alignment must be correct");
353 if (do_post_padding) {
354 // force alignment after the cache check.
355 // It's been verified to be aligned if !VerifyOops
356 __ align(CodeEntryAlignment);
357 }
358 return offset;
359 }
360
361
362 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) {
363 jobject o = NULL;
364 PatchingStub* patch = new PatchingStub(_masm, patching_id(info));
365 __ movoop(reg, o);
366 patching_epilog(patch, lir_patch_normal, reg, info);
367 }
368
369 void LIR_Assembler::klass2reg_with_patching(Register reg, CodeEmitInfo* info) {
370 Metadata* o = NULL;
371 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id);
372 __ mov_metadata(reg, o);
373 patching_epilog(patch, lir_patch_normal, reg, info);
374 }
375
376 // This specifies the rsp decrement needed to build the frame
377 int LIR_Assembler::initial_frame_size_in_bytes() const {
378 // if rounding, must let FrameMap know!
379
380 // The frame_map records size in slots (32bit word)
381
382 // subtract two words to account for return address and link
383 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size;
384 }
385
386
387 int LIR_Assembler::emit_exception_handler() {
388 // if the last instruction is a call (typically to do a throw which
389 // is coming at the end after block reordering) the return address
390 // must still point into the code area in order to avoid assertion
391 // failures when searching for the corresponding bci => add a nop
392 // (was bug 5/14/1999 - gri)
393 __ nop();
394
395 // generate code for exception handler
396 address handler_base = __ start_a_stub(exception_handler_size());
397 if (handler_base == NULL) {
398 // not enough space left for the handler
399 bailout("exception handler overflow");
400 return -1;
401 }
402
403 int offset = code_offset();
404
405 // the exception oop and pc are in rax, and rdx
406 // no other registers need to be preserved, so invalidate them
407 __ invalidate_registers(false, true, true, false, true, true);
408
409 // check that there is really an exception
410 __ verify_not_null_oop(rax);
411
412 // search an exception handler (rax: exception oop, rdx: throwing pc)
413 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id)));
414 __ should_not_reach_here();
415 guarantee(code_offset() - offset <= exception_handler_size(), "overflow");
416 __ end_a_stub();
417
418 return offset;
419 }
420
421
422 // Emit the code to remove the frame from the stack in the exception
423 // unwind path.
424 int LIR_Assembler::emit_unwind_handler() {
425 #ifndef PRODUCT
426 if (CommentedAssembly) {
427 _masm->block_comment("Unwind handler");
428 }
429 #endif
430
431 int offset = code_offset();
432
433 // Fetch the exception from TLS and clear out exception related thread state
434 Register thread = NOT_LP64(rsi) LP64_ONLY(r15_thread);
435 NOT_LP64(__ get_thread(rsi));
436 __ movptr(rax, Address(thread, JavaThread::exception_oop_offset()));
437 __ movptr(Address(thread, JavaThread::exception_oop_offset()), (intptr_t)NULL_WORD);
438 __ movptr(Address(thread, JavaThread::exception_pc_offset()), (intptr_t)NULL_WORD);
439
440 __ bind(_unwind_handler_entry);
441 __ verify_not_null_oop(rax);
442 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
443 __ mov(rbx, rax); // Preserve the exception (rbx is always callee-saved)
444 }
445
446 // Preform needed unlocking
447 MonitorExitStub* stub = NULL;
448 if (method()->is_synchronized()) {
449 monitor_address(0, FrameMap::rax_opr);
450 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0);
451 __ unlock_object(rdi, rsi, rax, *stub->entry());
452 __ bind(*stub->continuation());
453 }
454
455 if (compilation()->env()->dtrace_method_probes()) {
456 #ifdef _LP64
457 __ mov(rdi, r15_thread);
458 __ mov_metadata(rsi, method()->constant_encoding());
459 #else
460 __ get_thread(rax);
461 __ movptr(Address(rsp, 0), rax);
462 __ mov_metadata(Address(rsp, sizeof(void*)), method()->constant_encoding());
463 #endif
464 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit)));
465 }
466
467 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
468 __ mov(rax, rbx); // Restore the exception
469 }
470
471 // remove the activation and dispatch to the unwind handler
472 __ remove_frame(initial_frame_size_in_bytes());
473 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id)));
474
475 // Emit the slow path assembly
476 if (stub != NULL) {
477 stub->emit_code(this);
478 }
479
480 return offset;
481 }
482
483
484 int LIR_Assembler::emit_deopt_handler() {
485 // if the last instruction is a call (typically to do a throw which
486 // is coming at the end after block reordering) the return address
487 // must still point into the code area in order to avoid assertion
488 // failures when searching for the corresponding bci => add a nop
489 // (was bug 5/14/1999 - gri)
490 __ nop();
491
492 // generate code for exception handler
493 address handler_base = __ start_a_stub(deopt_handler_size());
494 if (handler_base == NULL) {
495 // not enough space left for the handler
496 bailout("deopt handler overflow");
497 return -1;
498 }
499
500 int offset = code_offset();
501 InternalAddress here(__ pc());
502
503 __ pushptr(here.addr());
504 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack()));
505 guarantee(code_offset() - offset <= deopt_handler_size(), "overflow");
506 __ end_a_stub();
507
508 return offset;
509 }
510
511
512 void LIR_Assembler::return_op(LIR_Opr result) {
513 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,");
514 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) {
515 assert(result->fpu() == 0, "result must already be on TOS");
516 }
517
518 // Pop the stack before the safepoint code
519 __ remove_frame(initial_frame_size_in_bytes());
520
521 if (StackReservedPages > 0 && compilation()->has_reserved_stack_access()) {
522 __ reserved_stack_check();
523 }
524
525 bool result_is_oop = result->is_valid() ? result->is_oop() : false;
526
527 // Note: we do not need to round double result; float result has the right precision
528 // the poll sets the condition code, but no data registers
529
530 if (SafepointMechanism::uses_thread_local_poll()) {
531 #ifdef _LP64
532 __ movptr(rscratch1, Address(r15_thread, Thread::polling_page_offset()));
533 __ relocate(relocInfo::poll_return_type);
534 __ testl(rax, Address(rscratch1, 0));
535 #else
536 ShouldNotReachHere();
537 #endif
538 } else {
539 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_return_type);
540
541 if (Assembler::is_polling_page_far()) {
542 __ lea(rscratch1, polling_page);
543 __ relocate(relocInfo::poll_return_type);
544 __ testl(rax, Address(rscratch1, 0));
545 } else {
546 __ testl(rax, polling_page);
547 }
548 }
549 __ ret(0);
550 }
551
552
553 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
554 guarantee(info != NULL, "Shouldn't be NULL");
555 int offset = __ offset();
556 if (SafepointMechanism::uses_thread_local_poll()) {
557 #ifdef _LP64
558 __ movptr(rscratch1, Address(r15_thread, Thread::polling_page_offset()));
559 add_debug_info_for_branch(info);
560 __ relocate(relocInfo::poll_type);
561 address pre_pc = __ pc();
562 __ testl(rax, Address(rscratch1, 0));
563 address post_pc = __ pc();
564 guarantee(pointer_delta(post_pc, pre_pc, 1) == 3, "must be exact length");
565 #else
566 ShouldNotReachHere();
567 #endif
568 } else {
569 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_type);
570 if (Assembler::is_polling_page_far()) {
571 __ lea(rscratch1, polling_page);
572 offset = __ offset();
573 add_debug_info_for_branch(info);
574 __ relocate(relocInfo::poll_type);
575 __ testl(rax, Address(rscratch1, 0));
576 } else {
577 add_debug_info_for_branch(info);
578 __ testl(rax, polling_page);
579 }
580 }
581 return offset;
582 }
583
584
585 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) {
586 if (from_reg != to_reg) __ mov(to_reg, from_reg);
587 }
588
589 void LIR_Assembler::swap_reg(Register a, Register b) {
590 __ xchgptr(a, b);
591 }
592
593
594 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) {
595 assert(src->is_constant(), "should not call otherwise");
596 assert(dest->is_register(), "should not call otherwise");
597 LIR_Const* c = src->as_constant_ptr();
598
599 switch (c->type()) {
600 case T_INT: {
601 assert(patch_code == lir_patch_none, "no patching handled here");
602 __ movl(dest->as_register(), c->as_jint());
603 break;
604 }
605
606 case T_ADDRESS: {
607 assert(patch_code == lir_patch_none, "no patching handled here");
608 __ movptr(dest->as_register(), c->as_jint());
609 break;
610 }
611
612 case T_LONG: {
613 assert(patch_code == lir_patch_none, "no patching handled here");
614 #ifdef _LP64
615 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong());
616 #else
617 __ movptr(dest->as_register_lo(), c->as_jint_lo());
618 __ movptr(dest->as_register_hi(), c->as_jint_hi());
619 #endif // _LP64
620 break;
621 }
622
623 case T_OBJECT: {
624 if (patch_code != lir_patch_none) {
625 jobject2reg_with_patching(dest->as_register(), info);
626 } else {
627 __ movoop(dest->as_register(), c->as_jobject());
628 }
629 break;
630 }
631
632 case T_METADATA: {
633 if (patch_code != lir_patch_none) {
634 klass2reg_with_patching(dest->as_register(), info);
635 } else {
636 __ mov_metadata(dest->as_register(), c->as_metadata());
637 }
638 break;
639 }
640
641 case T_FLOAT: {
642 if (dest->is_single_xmm()) {
643 if (c->is_zero_float()) {
644 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg());
645 } else {
646 __ movflt(dest->as_xmm_float_reg(),
647 InternalAddress(float_constant(c->as_jfloat())));
648 }
649 } else {
650 assert(dest->is_single_fpu(), "must be");
651 assert(dest->fpu_regnr() == 0, "dest must be TOS");
652 if (c->is_zero_float()) {
653 __ fldz();
654 } else if (c->is_one_float()) {
655 __ fld1();
656 } else {
657 __ fld_s (InternalAddress(float_constant(c->as_jfloat())));
658 }
659 }
660 break;
661 }
662
663 case T_DOUBLE: {
664 if (dest->is_double_xmm()) {
665 if (c->is_zero_double()) {
666 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg());
667 } else {
668 __ movdbl(dest->as_xmm_double_reg(),
669 InternalAddress(double_constant(c->as_jdouble())));
670 }
671 } else {
672 assert(dest->is_double_fpu(), "must be");
673 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
674 if (c->is_zero_double()) {
675 __ fldz();
676 } else if (c->is_one_double()) {
677 __ fld1();
678 } else {
679 __ fld_d (InternalAddress(double_constant(c->as_jdouble())));
680 }
681 }
682 break;
683 }
684
685 default:
686 ShouldNotReachHere();
687 }
688 }
689
690 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) {
691 assert(src->is_constant(), "should not call otherwise");
692 assert(dest->is_stack(), "should not call otherwise");
693 LIR_Const* c = src->as_constant_ptr();
694
695 switch (c->type()) {
696 case T_INT: // fall through
697 case T_FLOAT:
698 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
699 break;
700
701 case T_ADDRESS:
702 __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
703 break;
704
705 case T_OBJECT:
706 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject());
707 break;
708
709 case T_LONG: // fall through
710 case T_DOUBLE:
711 #ifdef _LP64
712 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
713 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits());
714 #else
715 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
716 lo_word_offset_in_bytes), c->as_jint_lo_bits());
717 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
718 hi_word_offset_in_bytes), c->as_jint_hi_bits());
719 #endif // _LP64
720 break;
721
722 default:
723 ShouldNotReachHere();
724 }
725 }
726
727 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) {
728 assert(src->is_constant(), "should not call otherwise");
729 assert(dest->is_address(), "should not call otherwise");
730 LIR_Const* c = src->as_constant_ptr();
731 LIR_Address* addr = dest->as_address_ptr();
732
733 int null_check_here = code_offset();
734 switch (type) {
735 case T_INT: // fall through
736 case T_FLOAT:
737 __ movl(as_Address(addr), c->as_jint_bits());
738 break;
739
740 case T_ADDRESS:
741 __ movptr(as_Address(addr), c->as_jint_bits());
742 break;
743
744 case T_OBJECT: // fall through
745 case T_ARRAY:
746 if (c->as_jobject() == NULL) {
747 if (UseCompressedOops && !wide) {
748 __ movl(as_Address(addr), (int32_t)NULL_WORD);
749 } else {
750 #ifdef _LP64
751 __ xorptr(rscratch1, rscratch1);
752 null_check_here = code_offset();
753 __ movptr(as_Address(addr), rscratch1);
754 #else
755 __ movptr(as_Address(addr), NULL_WORD);
756 #endif
757 }
758 } else {
759 if (is_literal_address(addr)) {
760 ShouldNotReachHere();
761 __ movoop(as_Address(addr, noreg), c->as_jobject());
762 } else {
763 #ifdef _LP64
764 __ movoop(rscratch1, c->as_jobject());
765 if (UseCompressedOops && !wide) {
766 __ encode_heap_oop(rscratch1);
767 null_check_here = code_offset();
768 __ movl(as_Address_lo(addr), rscratch1);
769 } else {
770 null_check_here = code_offset();
771 __ movptr(as_Address_lo(addr), rscratch1);
772 }
773 #else
774 __ movoop(as_Address(addr), c->as_jobject());
775 #endif
776 }
777 }
778 break;
779
780 case T_LONG: // fall through
781 case T_DOUBLE:
782 #ifdef _LP64
783 if (is_literal_address(addr)) {
784 ShouldNotReachHere();
785 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits());
786 } else {
787 __ movptr(r10, (intptr_t)c->as_jlong_bits());
788 null_check_here = code_offset();
789 __ movptr(as_Address_lo(addr), r10);
790 }
791 #else
792 // Always reachable in 32bit so this doesn't produce useless move literal
793 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits());
794 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits());
795 #endif // _LP64
796 break;
797
798 case T_BOOLEAN: // fall through
799 case T_BYTE:
800 __ movb(as_Address(addr), c->as_jint() & 0xFF);
801 break;
802
803 case T_CHAR: // fall through
804 case T_SHORT:
805 __ movw(as_Address(addr), c->as_jint() & 0xFFFF);
806 break;
807
808 default:
809 ShouldNotReachHere();
810 };
811
812 if (info != NULL) {
813 add_debug_info_for_null_check(null_check_here, info);
814 }
815 }
816
817
818 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) {
819 assert(src->is_register(), "should not call otherwise");
820 assert(dest->is_register(), "should not call otherwise");
821
822 // move between cpu-registers
823 if (dest->is_single_cpu()) {
824 #ifdef _LP64
825 if (src->type() == T_LONG) {
826 // Can do LONG -> OBJECT
827 move_regs(src->as_register_lo(), dest->as_register());
828 return;
829 }
830 #endif
831 assert(src->is_single_cpu(), "must match");
832 if (src->type() == T_OBJECT) {
833 __ verify_oop(src->as_register());
834 }
835 move_regs(src->as_register(), dest->as_register());
836
837 } else if (dest->is_double_cpu()) {
838 #ifdef _LP64
839 if (src->type() == T_OBJECT || src->type() == T_ARRAY) {
840 // Surprising to me but we can see move of a long to t_object
841 __ verify_oop(src->as_register());
842 move_regs(src->as_register(), dest->as_register_lo());
843 return;
844 }
845 #endif
846 assert(src->is_double_cpu(), "must match");
847 Register f_lo = src->as_register_lo();
848 Register f_hi = src->as_register_hi();
849 Register t_lo = dest->as_register_lo();
850 Register t_hi = dest->as_register_hi();
851 #ifdef _LP64
852 assert(f_hi == f_lo, "must be same");
853 assert(t_hi == t_lo, "must be same");
854 move_regs(f_lo, t_lo);
855 #else
856 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation");
857
858
859 if (f_lo == t_hi && f_hi == t_lo) {
860 swap_reg(f_lo, f_hi);
861 } else if (f_hi == t_lo) {
862 assert(f_lo != t_hi, "overwriting register");
863 move_regs(f_hi, t_hi);
864 move_regs(f_lo, t_lo);
865 } else {
866 assert(f_hi != t_lo, "overwriting register");
867 move_regs(f_lo, t_lo);
868 move_regs(f_hi, t_hi);
869 }
870 #endif // LP64
871
872 // special moves from fpu-register to xmm-register
873 // necessary for method results
874 } else if (src->is_single_xmm() && !dest->is_single_xmm()) {
875 __ movflt(Address(rsp, 0), src->as_xmm_float_reg());
876 __ fld_s(Address(rsp, 0));
877 } else if (src->is_double_xmm() && !dest->is_double_xmm()) {
878 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg());
879 __ fld_d(Address(rsp, 0));
880 } else if (dest->is_single_xmm() && !src->is_single_xmm()) {
881 __ fstp_s(Address(rsp, 0));
882 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0));
883 } else if (dest->is_double_xmm() && !src->is_double_xmm()) {
884 __ fstp_d(Address(rsp, 0));
885 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0));
886
887 // move between xmm-registers
888 } else if (dest->is_single_xmm()) {
889 assert(src->is_single_xmm(), "must match");
890 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg());
891 } else if (dest->is_double_xmm()) {
892 assert(src->is_double_xmm(), "must match");
893 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg());
894
895 // move between fpu-registers (no instruction necessary because of fpu-stack)
896 } else if (dest->is_single_fpu() || dest->is_double_fpu()) {
897 assert(src->is_single_fpu() || src->is_double_fpu(), "must match");
898 assert(src->fpu() == dest->fpu(), "currently should be nothing to do");
899 } else {
900 ShouldNotReachHere();
901 }
902 }
903
904 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) {
905 assert(src->is_register(), "should not call otherwise");
906 assert(dest->is_stack(), "should not call otherwise");
907
908 if (src->is_single_cpu()) {
909 Address dst = frame_map()->address_for_slot(dest->single_stack_ix());
910 if (type == T_OBJECT || type == T_ARRAY) {
911 __ verify_oop(src->as_register());
912 __ movptr (dst, src->as_register());
913 } else if (type == T_METADATA) {
914 __ movptr (dst, src->as_register());
915 } else {
916 __ movl (dst, src->as_register());
917 }
918
919 } else if (src->is_double_cpu()) {
920 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes);
921 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes);
922 __ movptr (dstLO, src->as_register_lo());
923 NOT_LP64(__ movptr (dstHI, src->as_register_hi()));
924
925 } else if (src->is_single_xmm()) {
926 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
927 __ movflt(dst_addr, src->as_xmm_float_reg());
928
929 } else if (src->is_double_xmm()) {
930 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
931 __ movdbl(dst_addr, src->as_xmm_double_reg());
932
933 } else if (src->is_single_fpu()) {
934 assert(src->fpu_regnr() == 0, "argument must be on TOS");
935 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
936 if (pop_fpu_stack) __ fstp_s (dst_addr);
937 else __ fst_s (dst_addr);
938
939 } else if (src->is_double_fpu()) {
940 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
941 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
942 if (pop_fpu_stack) __ fstp_d (dst_addr);
943 else __ fst_d (dst_addr);
944
945 } else {
946 ShouldNotReachHere();
947 }
948 }
949
950
951 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 */) {
952 LIR_Address* to_addr = dest->as_address_ptr();
953 PatchingStub* patch = NULL;
954 Register compressed_src = rscratch1;
955
956 if (type == T_ARRAY || type == T_OBJECT) {
957 __ verify_oop(src->as_register());
958 #ifdef _LP64
959 if (UseCompressedOops && !wide) {
960 __ movptr(compressed_src, src->as_register());
961 __ encode_heap_oop(compressed_src);
962 if (patch_code != lir_patch_none) {
963 info->oop_map()->set_narrowoop(compressed_src->as_VMReg());
964 }
965 }
966 #endif
967 }
968
969 if (patch_code != lir_patch_none) {
970 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
971 Address toa = as_Address(to_addr);
972 assert(toa.disp() != 0, "must have");
973 }
974
975 int null_check_here = code_offset();
976 switch (type) {
977 case T_FLOAT: {
978 if (src->is_single_xmm()) {
979 __ movflt(as_Address(to_addr), src->as_xmm_float_reg());
980 } else {
981 assert(src->is_single_fpu(), "must be");
982 assert(src->fpu_regnr() == 0, "argument must be on TOS");
983 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr));
984 else __ fst_s (as_Address(to_addr));
985 }
986 break;
987 }
988
989 case T_DOUBLE: {
990 if (src->is_double_xmm()) {
991 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg());
992 } else {
993 assert(src->is_double_fpu(), "must be");
994 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
995 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr));
996 else __ fst_d (as_Address(to_addr));
997 }
998 break;
999 }
1000
1001 case T_ARRAY: // fall through
1002 case T_OBJECT: // fall through
1003 if (UseCompressedOops && !wide) {
1004 __ movl(as_Address(to_addr), compressed_src);
1005 } else {
1006 __ movptr(as_Address(to_addr), src->as_register());
1007 }
1008 break;
1009 case T_METADATA:
1010 // We get here to store a method pointer to the stack to pass to
1011 // a dtrace runtime call. This can't work on 64 bit with
1012 // compressed klass ptrs: T_METADATA can be a compressed klass
1013 // ptr or a 64 bit method pointer.
1014 LP64_ONLY(ShouldNotReachHere());
1015 __ movptr(as_Address(to_addr), src->as_register());
1016 break;
1017 case T_ADDRESS:
1018 __ movptr(as_Address(to_addr), src->as_register());
1019 break;
1020 case T_INT:
1021 __ movl(as_Address(to_addr), src->as_register());
1022 break;
1023
1024 case T_LONG: {
1025 Register from_lo = src->as_register_lo();
1026 Register from_hi = src->as_register_hi();
1027 #ifdef _LP64
1028 __ movptr(as_Address_lo(to_addr), from_lo);
1029 #else
1030 Register base = to_addr->base()->as_register();
1031 Register index = noreg;
1032 if (to_addr->index()->is_register()) {
1033 index = to_addr->index()->as_register();
1034 }
1035 if (base == from_lo || index == from_lo) {
1036 assert(base != from_hi, "can't be");
1037 assert(index == noreg || (index != base && index != from_hi), "can't handle this");
1038 __ movl(as_Address_hi(to_addr), from_hi);
1039 if (patch != NULL) {
1040 patching_epilog(patch, lir_patch_high, base, info);
1041 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1042 patch_code = lir_patch_low;
1043 }
1044 __ movl(as_Address_lo(to_addr), from_lo);
1045 } else {
1046 assert(index == noreg || (index != base && index != from_lo), "can't handle this");
1047 __ movl(as_Address_lo(to_addr), from_lo);
1048 if (patch != NULL) {
1049 patching_epilog(patch, lir_patch_low, base, info);
1050 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1051 patch_code = lir_patch_high;
1052 }
1053 __ movl(as_Address_hi(to_addr), from_hi);
1054 }
1055 #endif // _LP64
1056 break;
1057 }
1058
1059 case T_BYTE: // fall through
1060 case T_BOOLEAN: {
1061 Register src_reg = src->as_register();
1062 Address dst_addr = as_Address(to_addr);
1063 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6");
1064 __ movb(dst_addr, src_reg);
1065 break;
1066 }
1067
1068 case T_CHAR: // fall through
1069 case T_SHORT:
1070 __ movw(as_Address(to_addr), src->as_register());
1071 break;
1072
1073 default:
1074 ShouldNotReachHere();
1075 }
1076 if (info != NULL) {
1077 add_debug_info_for_null_check(null_check_here, info);
1078 }
1079
1080 if (patch_code != lir_patch_none) {
1081 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info);
1082 }
1083 }
1084
1085
1086 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) {
1087 assert(src->is_stack(), "should not call otherwise");
1088 assert(dest->is_register(), "should not call otherwise");
1089
1090 if (dest->is_single_cpu()) {
1091 if (type == T_ARRAY || type == T_OBJECT) {
1092 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1093 __ verify_oop(dest->as_register());
1094 } else if (type == T_METADATA) {
1095 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1096 } else {
1097 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1098 }
1099
1100 } else if (dest->is_double_cpu()) {
1101 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes);
1102 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes);
1103 __ movptr(dest->as_register_lo(), src_addr_LO);
1104 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI));
1105
1106 } else if (dest->is_single_xmm()) {
1107 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1108 __ movflt(dest->as_xmm_float_reg(), src_addr);
1109
1110 } else if (dest->is_double_xmm()) {
1111 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1112 __ movdbl(dest->as_xmm_double_reg(), src_addr);
1113
1114 } else if (dest->is_single_fpu()) {
1115 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1116 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1117 __ fld_s(src_addr);
1118
1119 } else if (dest->is_double_fpu()) {
1120 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1121 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1122 __ fld_d(src_addr);
1123
1124 } else {
1125 ShouldNotReachHere();
1126 }
1127 }
1128
1129
1130 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) {
1131 if (src->is_single_stack()) {
1132 if (type == T_OBJECT || type == T_ARRAY) {
1133 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix()));
1134 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix()));
1135 } else {
1136 #ifndef _LP64
1137 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix()));
1138 __ popl (frame_map()->address_for_slot(dest->single_stack_ix()));
1139 #else
1140 //no pushl on 64bits
1141 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix()));
1142 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1);
1143 #endif
1144 }
1145
1146 } else if (src->is_double_stack()) {
1147 #ifdef _LP64
1148 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix()));
1149 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix()));
1150 #else
1151 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0));
1152 // push and pop the part at src + wordSize, adding wordSize for the previous push
1153 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize));
1154 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize));
1155 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0));
1156 #endif // _LP64
1157
1158 } else {
1159 ShouldNotReachHere();
1160 }
1161 }
1162
1163
1164 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) {
1165 assert(src->is_address(), "should not call otherwise");
1166 assert(dest->is_register(), "should not call otherwise");
1167
1168 LIR_Address* addr = src->as_address_ptr();
1169 Address from_addr = as_Address(addr);
1170
1171 if (addr->base()->type() == T_OBJECT) {
1172 __ verify_oop(addr->base()->as_pointer_register());
1173 }
1174
1175 switch (type) {
1176 case T_BOOLEAN: // fall through
1177 case T_BYTE: // fall through
1178 case T_CHAR: // fall through
1179 case T_SHORT:
1180 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) {
1181 // on pre P6 processors we may get partial register stalls
1182 // so blow away the value of to_rinfo before loading a
1183 // partial word into it. Do it here so that it precedes
1184 // the potential patch point below.
1185 __ xorptr(dest->as_register(), dest->as_register());
1186 }
1187 break;
1188 default:
1189 break;
1190 }
1191
1192 PatchingStub* patch = NULL;
1193 if (patch_code != lir_patch_none) {
1194 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1195 assert(from_addr.disp() != 0, "must have");
1196 }
1197 if (info != NULL) {
1198 add_debug_info_for_null_check_here(info);
1199 }
1200
1201 switch (type) {
1202 case T_FLOAT: {
1203 if (dest->is_single_xmm()) {
1204 __ movflt(dest->as_xmm_float_reg(), from_addr);
1205 } else {
1206 assert(dest->is_single_fpu(), "must be");
1207 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1208 __ fld_s(from_addr);
1209 }
1210 break;
1211 }
1212
1213 case T_DOUBLE: {
1214 if (dest->is_double_xmm()) {
1215 __ movdbl(dest->as_xmm_double_reg(), from_addr);
1216 } else {
1217 assert(dest->is_double_fpu(), "must be");
1218 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1219 __ fld_d(from_addr);
1220 }
1221 break;
1222 }
1223
1224 case T_OBJECT: // fall through
1225 case T_ARRAY: // fall through
1226 if (UseCompressedOops && !wide) {
1227 __ movl(dest->as_register(), from_addr);
1228 } else {
1229 __ movptr(dest->as_register(), from_addr);
1230 }
1231 break;
1232
1233 case T_ADDRESS:
1234 if (UseCompressedClassPointers && addr->disp() == oopDesc::klass_offset_in_bytes()) {
1235 __ movl(dest->as_register(), from_addr);
1236 } else {
1237 __ movptr(dest->as_register(), from_addr);
1238 }
1239 break;
1240 case T_INT:
1241 __ movl(dest->as_register(), from_addr);
1242 break;
1243
1244 case T_LONG: {
1245 Register to_lo = dest->as_register_lo();
1246 Register to_hi = dest->as_register_hi();
1247 #ifdef _LP64
1248 __ movptr(to_lo, as_Address_lo(addr));
1249 #else
1250 Register base = addr->base()->as_register();
1251 Register index = noreg;
1252 if (addr->index()->is_register()) {
1253 index = addr->index()->as_register();
1254 }
1255 if ((base == to_lo && index == to_hi) ||
1256 (base == to_hi && index == to_lo)) {
1257 // addresses with 2 registers are only formed as a result of
1258 // array access so this code will never have to deal with
1259 // patches or null checks.
1260 assert(info == NULL && patch == NULL, "must be");
1261 __ lea(to_hi, as_Address(addr));
1262 __ movl(to_lo, Address(to_hi, 0));
1263 __ movl(to_hi, Address(to_hi, BytesPerWord));
1264 } else if (base == to_lo || index == to_lo) {
1265 assert(base != to_hi, "can't be");
1266 assert(index == noreg || (index != base && index != to_hi), "can't handle this");
1267 __ movl(to_hi, as_Address_hi(addr));
1268 if (patch != NULL) {
1269 patching_epilog(patch, lir_patch_high, base, info);
1270 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1271 patch_code = lir_patch_low;
1272 }
1273 __ movl(to_lo, as_Address_lo(addr));
1274 } else {
1275 assert(index == noreg || (index != base && index != to_lo), "can't handle this");
1276 __ movl(to_lo, as_Address_lo(addr));
1277 if (patch != NULL) {
1278 patching_epilog(patch, lir_patch_low, base, info);
1279 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1280 patch_code = lir_patch_high;
1281 }
1282 __ movl(to_hi, as_Address_hi(addr));
1283 }
1284 #endif // _LP64
1285 break;
1286 }
1287
1288 case T_BOOLEAN: // fall through
1289 case T_BYTE: {
1290 Register dest_reg = dest->as_register();
1291 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1292 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1293 __ movsbl(dest_reg, from_addr);
1294 } else {
1295 __ movb(dest_reg, from_addr);
1296 __ shll(dest_reg, 24);
1297 __ sarl(dest_reg, 24);
1298 }
1299 break;
1300 }
1301
1302 case T_CHAR: {
1303 Register dest_reg = dest->as_register();
1304 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1305 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1306 __ movzwl(dest_reg, from_addr);
1307 } else {
1308 __ movw(dest_reg, from_addr);
1309 }
1310 break;
1311 }
1312
1313 case T_SHORT: {
1314 Register dest_reg = dest->as_register();
1315 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1316 __ movswl(dest_reg, from_addr);
1317 } else {
1318 __ movw(dest_reg, from_addr);
1319 __ shll(dest_reg, 16);
1320 __ sarl(dest_reg, 16);
1321 }
1322 break;
1323 }
1324
1325 default:
1326 ShouldNotReachHere();
1327 }
1328
1329 if (patch != NULL) {
1330 patching_epilog(patch, patch_code, addr->base()->as_register(), info);
1331 }
1332
1333 if (type == T_ARRAY || type == T_OBJECT) {
1334 #ifdef _LP64
1335 if (UseCompressedOops && !wide) {
1336 __ decode_heap_oop(dest->as_register());
1337 }
1338 #endif
1339 __ verify_oop(dest->as_register());
1340 } else if (type == T_ADDRESS && addr->disp() == oopDesc::klass_offset_in_bytes()) {
1341 #ifdef _LP64
1342 if (UseCompressedClassPointers) {
1343 __ decode_klass_not_null(dest->as_register());
1344 }
1345 #endif
1346 }
1347 }
1348
1349
1350 NEEDS_CLEANUP; // This could be static?
1351 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const {
1352 int elem_size = type2aelembytes(type);
1353 switch (elem_size) {
1354 case 1: return Address::times_1;
1355 case 2: return Address::times_2;
1356 case 4: return Address::times_4;
1357 case 8: return Address::times_8;
1358 }
1359 ShouldNotReachHere();
1360 return Address::no_scale;
1361 }
1362
1363
1364 void LIR_Assembler::emit_op3(LIR_Op3* op) {
1365 switch (op->code()) {
1366 case lir_idiv:
1367 case lir_irem:
1368 arithmetic_idiv(op->code(),
1369 op->in_opr1(),
1370 op->in_opr2(),
1371 op->in_opr3(),
1372 op->result_opr(),
1373 op->info());
1374 break;
1375 case lir_fmad:
1376 __ fmad(op->result_opr()->as_xmm_double_reg(),
1377 op->in_opr1()->as_xmm_double_reg(),
1378 op->in_opr2()->as_xmm_double_reg(),
1379 op->in_opr3()->as_xmm_double_reg());
1380 break;
1381 case lir_fmaf:
1382 __ fmaf(op->result_opr()->as_xmm_float_reg(),
1383 op->in_opr1()->as_xmm_float_reg(),
1384 op->in_opr2()->as_xmm_float_reg(),
1385 op->in_opr3()->as_xmm_float_reg());
1386 break;
1387 default: ShouldNotReachHere(); break;
1388 }
1389 }
1390
1391 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) {
1392 #ifdef ASSERT
1393 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label");
1394 if (op->block() != NULL) _branch_target_blocks.append(op->block());
1395 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock());
1396 #endif
1397
1398 if (op->cond() == lir_cond_always) {
1399 if (op->info() != NULL) add_debug_info_for_branch(op->info());
1400 __ jmp (*(op->label()));
1401 } else {
1402 Assembler::Condition acond = Assembler::zero;
1403 if (op->code() == lir_cond_float_branch) {
1404 assert(op->ublock() != NULL, "must have unordered successor");
1405 __ jcc(Assembler::parity, *(op->ublock()->label()));
1406 switch(op->cond()) {
1407 case lir_cond_equal: acond = Assembler::equal; break;
1408 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1409 case lir_cond_less: acond = Assembler::below; break;
1410 case lir_cond_lessEqual: acond = Assembler::belowEqual; break;
1411 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break;
1412 case lir_cond_greater: acond = Assembler::above; break;
1413 default: ShouldNotReachHere();
1414 }
1415 } else {
1416 switch (op->cond()) {
1417 case lir_cond_equal: acond = Assembler::equal; break;
1418 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1419 case lir_cond_less: acond = Assembler::less; break;
1420 case lir_cond_lessEqual: acond = Assembler::lessEqual; break;
1421 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break;
1422 case lir_cond_greater: acond = Assembler::greater; break;
1423 case lir_cond_belowEqual: acond = Assembler::belowEqual; break;
1424 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break;
1425 default: ShouldNotReachHere();
1426 }
1427 }
1428 __ jcc(acond,*(op->label()));
1429 }
1430 }
1431
1432 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) {
1433 LIR_Opr src = op->in_opr();
1434 LIR_Opr dest = op->result_opr();
1435
1436 switch (op->bytecode()) {
1437 case Bytecodes::_i2l:
1438 #ifdef _LP64
1439 __ movl2ptr(dest->as_register_lo(), src->as_register());
1440 #else
1441 move_regs(src->as_register(), dest->as_register_lo());
1442 move_regs(src->as_register(), dest->as_register_hi());
1443 __ sarl(dest->as_register_hi(), 31);
1444 #endif // LP64
1445 break;
1446
1447 case Bytecodes::_l2i:
1448 #ifdef _LP64
1449 __ movl(dest->as_register(), src->as_register_lo());
1450 #else
1451 move_regs(src->as_register_lo(), dest->as_register());
1452 #endif
1453 break;
1454
1455 case Bytecodes::_i2b:
1456 move_regs(src->as_register(), dest->as_register());
1457 __ sign_extend_byte(dest->as_register());
1458 break;
1459
1460 case Bytecodes::_i2c:
1461 move_regs(src->as_register(), dest->as_register());
1462 __ andl(dest->as_register(), 0xFFFF);
1463 break;
1464
1465 case Bytecodes::_i2s:
1466 move_regs(src->as_register(), dest->as_register());
1467 __ sign_extend_short(dest->as_register());
1468 break;
1469
1470
1471 case Bytecodes::_f2d:
1472 case Bytecodes::_d2f:
1473 if (dest->is_single_xmm()) {
1474 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg());
1475 } else if (dest->is_double_xmm()) {
1476 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg());
1477 } else {
1478 assert(src->fpu() == dest->fpu(), "register must be equal");
1479 // do nothing (float result is rounded later through spilling)
1480 }
1481 break;
1482
1483 case Bytecodes::_i2f:
1484 case Bytecodes::_i2d:
1485 if (dest->is_single_xmm()) {
1486 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register());
1487 } else if (dest->is_double_xmm()) {
1488 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register());
1489 } else {
1490 assert(dest->fpu() == 0, "result must be on TOS");
1491 __ movl(Address(rsp, 0), src->as_register());
1492 __ fild_s(Address(rsp, 0));
1493 }
1494 break;
1495
1496 case Bytecodes::_f2i:
1497 case Bytecodes::_d2i:
1498 if (src->is_single_xmm()) {
1499 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg());
1500 } else if (src->is_double_xmm()) {
1501 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg());
1502 } else {
1503 assert(src->fpu() == 0, "input must be on TOS");
1504 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc()));
1505 __ fist_s(Address(rsp, 0));
1506 __ movl(dest->as_register(), Address(rsp, 0));
1507 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
1508 }
1509
1510 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub
1511 assert(op->stub() != NULL, "stub required");
1512 __ cmpl(dest->as_register(), 0x80000000);
1513 __ jcc(Assembler::equal, *op->stub()->entry());
1514 __ bind(*op->stub()->continuation());
1515 break;
1516
1517 case Bytecodes::_l2f:
1518 case Bytecodes::_l2d:
1519 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)");
1520 assert(dest->fpu() == 0, "result must be on TOS");
1521
1522 __ movptr(Address(rsp, 0), src->as_register_lo());
1523 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi()));
1524 __ fild_d(Address(rsp, 0));
1525 // float result is rounded later through spilling
1526 break;
1527
1528 case Bytecodes::_f2l:
1529 case Bytecodes::_d2l:
1530 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)");
1531 assert(src->fpu() == 0, "input must be on TOS");
1532 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers");
1533
1534 // instruction sequence too long to inline it here
1535 {
1536 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id)));
1537 }
1538 break;
1539
1540 default: ShouldNotReachHere();
1541 }
1542 }
1543
1544 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) {
1545 if (op->init_check()) {
1546 __ cmpb(Address(op->klass()->as_register(),
1547 InstanceKlass::init_state_offset()),
1548 InstanceKlass::fully_initialized);
1549 add_debug_info_for_null_check_here(op->stub()->info());
1550 __ jcc(Assembler::notEqual, *op->stub()->entry());
1551 }
1552 __ allocate_object(op->obj()->as_register(),
1553 op->tmp1()->as_register(),
1554 op->tmp2()->as_register(),
1555 op->header_size(),
1556 op->object_size(),
1557 op->klass()->as_register(),
1558 *op->stub()->entry());
1559 __ bind(*op->stub()->continuation());
1560 }
1561
1562 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) {
1563 Register len = op->len()->as_register();
1564 LP64_ONLY( __ movslq(len, len); )
1565
1566 if (UseSlowPath ||
1567 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) ||
1568 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) {
1569 __ jmp(*op->stub()->entry());
1570 } else {
1571 Register tmp1 = op->tmp1()->as_register();
1572 Register tmp2 = op->tmp2()->as_register();
1573 Register tmp3 = op->tmp3()->as_register();
1574 if (len == tmp1) {
1575 tmp1 = tmp3;
1576 } else if (len == tmp2) {
1577 tmp2 = tmp3;
1578 } else if (len == tmp3) {
1579 // everything is ok
1580 } else {
1581 __ mov(tmp3, len);
1582 }
1583 __ allocate_array(op->obj()->as_register(),
1584 len,
1585 tmp1,
1586 tmp2,
1587 arrayOopDesc::header_size(op->type()),
1588 array_element_size(op->type()),
1589 op->klass()->as_register(),
1590 *op->stub()->entry());
1591 }
1592 __ bind(*op->stub()->continuation());
1593 }
1594
1595 void LIR_Assembler::type_profile_helper(Register mdo,
1596 ciMethodData *md, ciProfileData *data,
1597 Register recv, Label* update_done) {
1598 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1599 Label next_test;
1600 // See if the receiver is receiver[n].
1601 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))));
1602 __ jccb(Assembler::notEqual, next_test);
1603 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)));
1604 __ addptr(data_addr, DataLayout::counter_increment);
1605 __ jmp(*update_done);
1606 __ bind(next_test);
1607 }
1608
1609 // Didn't find receiver; find next empty slot and fill it in
1610 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1611 Label next_test;
1612 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)));
1613 __ cmpptr(recv_addr, (intptr_t)NULL_WORD);
1614 __ jccb(Assembler::notEqual, next_test);
1615 __ movptr(recv_addr, recv);
1616 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment);
1617 __ jmp(*update_done);
1618 __ bind(next_test);
1619 }
1620 }
1621
1622 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) {
1623 // we always need a stub for the failure case.
1624 CodeStub* stub = op->stub();
1625 Register obj = op->object()->as_register();
1626 Register k_RInfo = op->tmp1()->as_register();
1627 Register klass_RInfo = op->tmp2()->as_register();
1628 Register dst = op->result_opr()->as_register();
1629 ciKlass* k = op->klass();
1630 Register Rtmp1 = noreg;
1631
1632 // check if it needs to be profiled
1633 ciMethodData* md = NULL;
1634 ciProfileData* data = NULL;
1635
1636 if (op->should_profile()) {
1637 ciMethod* method = op->profiled_method();
1638 assert(method != NULL, "Should have method");
1639 int bci = op->profiled_bci();
1640 md = method->method_data_or_null();
1641 assert(md != NULL, "Sanity");
1642 data = md->bci_to_data(bci);
1643 assert(data != NULL, "need data for type check");
1644 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1645 }
1646 Label profile_cast_success, profile_cast_failure;
1647 Label *success_target = op->should_profile() ? &profile_cast_success : success;
1648 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure;
1649
1650 if (obj == k_RInfo) {
1651 k_RInfo = dst;
1652 } else if (obj == klass_RInfo) {
1653 klass_RInfo = dst;
1654 }
1655 if (k->is_loaded() && !UseCompressedClassPointers) {
1656 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1657 } else {
1658 Rtmp1 = op->tmp3()->as_register();
1659 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1660 }
1661
1662 assert_different_registers(obj, k_RInfo, klass_RInfo);
1663
1664 __ cmpptr(obj, (int32_t)NULL_WORD);
1665 if (op->should_profile()) {
1666 Label not_null;
1667 __ jccb(Assembler::notEqual, not_null);
1668 // Object is null; update MDO and exit
1669 Register mdo = klass_RInfo;
1670 __ mov_metadata(mdo, md->constant_encoding());
1671 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset()));
1672 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1673 __ orl(data_addr, header_bits);
1674 __ jmp(*obj_is_null);
1675 __ bind(not_null);
1676 } else {
1677 __ jcc(Assembler::equal, *obj_is_null);
1678 }
1679
1680 if (!k->is_loaded()) {
1681 klass2reg_with_patching(k_RInfo, op->info_for_patch());
1682 } else {
1683 #ifdef _LP64
1684 __ mov_metadata(k_RInfo, k->constant_encoding());
1685 #endif // _LP64
1686 }
1687 __ verify_oop(obj);
1688
1689 if (op->fast_check()) {
1690 // get object class
1691 // not a safepoint as obj null check happens earlier
1692 #ifdef _LP64
1693 if (UseCompressedClassPointers) {
1694 __ load_klass(Rtmp1, obj);
1695 __ cmpptr(k_RInfo, Rtmp1);
1696 } else {
1697 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1698 }
1699 #else
1700 if (k->is_loaded()) {
1701 __ cmpklass(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding());
1702 } else {
1703 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1704 }
1705 #endif
1706 __ jcc(Assembler::notEqual, *failure_target);
1707 // successful cast, fall through to profile or jump
1708 } else {
1709 // get object class
1710 // not a safepoint as obj null check happens earlier
1711 __ load_klass(klass_RInfo, obj);
1712 if (k->is_loaded()) {
1713 // See if we get an immediate positive hit
1714 #ifdef _LP64
1715 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset()));
1716 #else
1717 __ cmpklass(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding());
1718 #endif // _LP64
1719 if ((juint)in_bytes(Klass::secondary_super_cache_offset()) != k->super_check_offset()) {
1720 __ jcc(Assembler::notEqual, *failure_target);
1721 // successful cast, fall through to profile or jump
1722 } else {
1723 // See if we get an immediate positive hit
1724 __ jcc(Assembler::equal, *success_target);
1725 // check for self
1726 #ifdef _LP64
1727 __ cmpptr(klass_RInfo, k_RInfo);
1728 #else
1729 __ cmpklass(klass_RInfo, k->constant_encoding());
1730 #endif // _LP64
1731 __ jcc(Assembler::equal, *success_target);
1732
1733 __ push(klass_RInfo);
1734 #ifdef _LP64
1735 __ push(k_RInfo);
1736 #else
1737 __ pushklass(k->constant_encoding());
1738 #endif // _LP64
1739 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1740 __ pop(klass_RInfo);
1741 __ pop(klass_RInfo);
1742 // result is a boolean
1743 __ cmpl(klass_RInfo, 0);
1744 __ jcc(Assembler::equal, *failure_target);
1745 // successful cast, fall through to profile or jump
1746 }
1747 } else {
1748 // perform the fast part of the checking logic
1749 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1750 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1751 __ push(klass_RInfo);
1752 __ push(k_RInfo);
1753 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1754 __ pop(klass_RInfo);
1755 __ pop(k_RInfo);
1756 // result is a boolean
1757 __ cmpl(k_RInfo, 0);
1758 __ jcc(Assembler::equal, *failure_target);
1759 // successful cast, fall through to profile or jump
1760 }
1761 }
1762 if (op->should_profile()) {
1763 Register mdo = klass_RInfo, recv = k_RInfo;
1764 __ bind(profile_cast_success);
1765 __ mov_metadata(mdo, md->constant_encoding());
1766 __ load_klass(recv, obj);
1767 Label update_done;
1768 type_profile_helper(mdo, md, data, recv, success);
1769 __ jmp(*success);
1770
1771 __ bind(profile_cast_failure);
1772 __ mov_metadata(mdo, md->constant_encoding());
1773 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1774 __ subptr(counter_addr, DataLayout::counter_increment);
1775 __ jmp(*failure);
1776 }
1777 __ jmp(*success);
1778 }
1779
1780
1781 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) {
1782 LIR_Code code = op->code();
1783 if (code == lir_store_check) {
1784 Register value = op->object()->as_register();
1785 Register array = op->array()->as_register();
1786 Register k_RInfo = op->tmp1()->as_register();
1787 Register klass_RInfo = op->tmp2()->as_register();
1788 Register Rtmp1 = op->tmp3()->as_register();
1789
1790 CodeStub* stub = op->stub();
1791
1792 // check if it needs to be profiled
1793 ciMethodData* md = NULL;
1794 ciProfileData* data = NULL;
1795
1796 if (op->should_profile()) {
1797 ciMethod* method = op->profiled_method();
1798 assert(method != NULL, "Should have method");
1799 int bci = op->profiled_bci();
1800 md = method->method_data_or_null();
1801 assert(md != NULL, "Sanity");
1802 data = md->bci_to_data(bci);
1803 assert(data != NULL, "need data for type check");
1804 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1805 }
1806 Label profile_cast_success, profile_cast_failure, done;
1807 Label *success_target = op->should_profile() ? &profile_cast_success : &done;
1808 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry();
1809
1810 __ cmpptr(value, (int32_t)NULL_WORD);
1811 if (op->should_profile()) {
1812 Label not_null;
1813 __ jccb(Assembler::notEqual, not_null);
1814 // Object is null; update MDO and exit
1815 Register mdo = klass_RInfo;
1816 __ mov_metadata(mdo, md->constant_encoding());
1817 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset()));
1818 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1819 __ orl(data_addr, header_bits);
1820 __ jmp(done);
1821 __ bind(not_null);
1822 } else {
1823 __ jcc(Assembler::equal, done);
1824 }
1825
1826 add_debug_info_for_null_check_here(op->info_for_exception());
1827 __ load_klass(k_RInfo, array);
1828 __ load_klass(klass_RInfo, value);
1829
1830 // get instance klass (it's already uncompressed)
1831 __ movptr(k_RInfo, Address(k_RInfo, ObjArrayKlass::element_klass_offset()));
1832 // perform the fast part of the checking logic
1833 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1834 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1835 __ push(klass_RInfo);
1836 __ push(k_RInfo);
1837 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1838 __ pop(klass_RInfo);
1839 __ pop(k_RInfo);
1840 // result is a boolean
1841 __ cmpl(k_RInfo, 0);
1842 __ jcc(Assembler::equal, *failure_target);
1843 // fall through to the success case
1844
1845 if (op->should_profile()) {
1846 Register mdo = klass_RInfo, recv = k_RInfo;
1847 __ bind(profile_cast_success);
1848 __ mov_metadata(mdo, md->constant_encoding());
1849 __ load_klass(recv, value);
1850 Label update_done;
1851 type_profile_helper(mdo, md, data, recv, &done);
1852 __ jmpb(done);
1853
1854 __ bind(profile_cast_failure);
1855 __ mov_metadata(mdo, md->constant_encoding());
1856 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1857 __ subptr(counter_addr, DataLayout::counter_increment);
1858 __ jmp(*stub->entry());
1859 }
1860
1861 __ bind(done);
1862 } else
1863 if (code == lir_checkcast) {
1864 Register obj = op->object()->as_register();
1865 Register dst = op->result_opr()->as_register();
1866 Label success;
1867 emit_typecheck_helper(op, &success, op->stub()->entry(), &success);
1868 __ bind(success);
1869 if (dst != obj) {
1870 __ mov(dst, obj);
1871 }
1872 } else
1873 if (code == lir_instanceof) {
1874 Register obj = op->object()->as_register();
1875 Register dst = op->result_opr()->as_register();
1876 Label success, failure, done;
1877 emit_typecheck_helper(op, &success, &failure, &failure);
1878 __ bind(failure);
1879 __ xorptr(dst, dst);
1880 __ jmpb(done);
1881 __ bind(success);
1882 __ movptr(dst, 1);
1883 __ bind(done);
1884 } else {
1885 ShouldNotReachHere();
1886 }
1887
1888 }
1889
1890
1891 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) {
1892 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) {
1893 assert(op->cmp_value()->as_register_lo() == rax, "wrong register");
1894 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register");
1895 assert(op->new_value()->as_register_lo() == rbx, "wrong register");
1896 assert(op->new_value()->as_register_hi() == rcx, "wrong register");
1897 Register addr = op->addr()->as_register();
1898 if (os::is_MP()) {
1899 __ lock();
1900 }
1901 NOT_LP64(__ cmpxchg8(Address(addr, 0)));
1902
1903 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) {
1904 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");)
1905 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1906 Register newval = op->new_value()->as_register();
1907 Register cmpval = op->cmp_value()->as_register();
1908 assert(cmpval == rax, "wrong register");
1909 assert(newval != NULL, "new val must be register");
1910 assert(cmpval != newval, "cmp and new values must be in different registers");
1911 assert(cmpval != addr, "cmp and addr must be in different registers");
1912 assert(newval != addr, "new value and addr must be in different registers");
1913
1914 if ( op->code() == lir_cas_obj) {
1915 #ifdef _LP64
1916 if (UseCompressedOops) {
1917 __ encode_heap_oop(cmpval);
1918 __ mov(rscratch1, newval);
1919 __ encode_heap_oop(rscratch1);
1920 if (os::is_MP()) {
1921 __ lock();
1922 }
1923 // cmpval (rax) is implicitly used by this instruction
1924 __ cmpxchgl(rscratch1, Address(addr, 0));
1925 } else
1926 #endif
1927 {
1928 if (os::is_MP()) {
1929 __ lock();
1930 }
1931 __ cmpxchgptr(newval, Address(addr, 0));
1932 }
1933 } else {
1934 assert(op->code() == lir_cas_int, "lir_cas_int expected");
1935 if (os::is_MP()) {
1936 __ lock();
1937 }
1938 __ cmpxchgl(newval, Address(addr, 0));
1939 }
1940 #ifdef _LP64
1941 } else if (op->code() == lir_cas_long) {
1942 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1943 Register newval = op->new_value()->as_register_lo();
1944 Register cmpval = op->cmp_value()->as_register_lo();
1945 assert(cmpval == rax, "wrong register");
1946 assert(newval != NULL, "new val must be register");
1947 assert(cmpval != newval, "cmp and new values must be in different registers");
1948 assert(cmpval != addr, "cmp and addr must be in different registers");
1949 assert(newval != addr, "new value and addr must be in different registers");
1950 if (os::is_MP()) {
1951 __ lock();
1952 }
1953 __ cmpxchgq(newval, Address(addr, 0));
1954 #endif // _LP64
1955 } else {
1956 Unimplemented();
1957 }
1958 }
1959
1960 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) {
1961 Assembler::Condition acond, ncond;
1962 switch (condition) {
1963 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break;
1964 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break;
1965 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break;
1966 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break;
1967 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break;
1968 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break;
1969 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break;
1970 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break;
1971 default: acond = Assembler::equal; ncond = Assembler::notEqual;
1972 ShouldNotReachHere();
1973 }
1974
1975 if (opr1->is_cpu_register()) {
1976 reg2reg(opr1, result);
1977 } else if (opr1->is_stack()) {
1978 stack2reg(opr1, result, result->type());
1979 } else if (opr1->is_constant()) {
1980 const2reg(opr1, result, lir_patch_none, NULL);
1981 } else {
1982 ShouldNotReachHere();
1983 }
1984
1985 if (VM_Version::supports_cmov() && !opr2->is_constant()) {
1986 // optimized version that does not require a branch
1987 if (opr2->is_single_cpu()) {
1988 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move");
1989 __ cmov(ncond, result->as_register(), opr2->as_register());
1990 } else if (opr2->is_double_cpu()) {
1991 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
1992 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
1993 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo());
1994 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());)
1995 } else if (opr2->is_single_stack()) {
1996 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix()));
1997 } else if (opr2->is_double_stack()) {
1998 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes));
1999 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));)
2000 } else {
2001 ShouldNotReachHere();
2002 }
2003
2004 } else {
2005 Label skip;
2006 __ jcc (acond, skip);
2007 if (opr2->is_cpu_register()) {
2008 reg2reg(opr2, result);
2009 } else if (opr2->is_stack()) {
2010 stack2reg(opr2, result, result->type());
2011 } else if (opr2->is_constant()) {
2012 const2reg(opr2, result, lir_patch_none, NULL);
2013 } else {
2014 ShouldNotReachHere();
2015 }
2016 __ bind(skip);
2017 }
2018 }
2019
2020
2021 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) {
2022 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method");
2023
2024 if (left->is_single_cpu()) {
2025 assert(left == dest, "left and dest must be equal");
2026 Register lreg = left->as_register();
2027
2028 if (right->is_single_cpu()) {
2029 // cpu register - cpu register
2030 Register rreg = right->as_register();
2031 switch (code) {
2032 case lir_add: __ addl (lreg, rreg); break;
2033 case lir_sub: __ subl (lreg, rreg); break;
2034 case lir_mul: __ imull(lreg, rreg); break;
2035 default: ShouldNotReachHere();
2036 }
2037
2038 } else if (right->is_stack()) {
2039 // cpu register - stack
2040 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2041 switch (code) {
2042 case lir_add: __ addl(lreg, raddr); break;
2043 case lir_sub: __ subl(lreg, raddr); break;
2044 default: ShouldNotReachHere();
2045 }
2046
2047 } else if (right->is_constant()) {
2048 // cpu register - constant
2049 jint c = right->as_constant_ptr()->as_jint();
2050 switch (code) {
2051 case lir_add: {
2052 __ incrementl(lreg, c);
2053 break;
2054 }
2055 case lir_sub: {
2056 __ decrementl(lreg, c);
2057 break;
2058 }
2059 default: ShouldNotReachHere();
2060 }
2061
2062 } else {
2063 ShouldNotReachHere();
2064 }
2065
2066 } else if (left->is_double_cpu()) {
2067 assert(left == dest, "left and dest must be equal");
2068 Register lreg_lo = left->as_register_lo();
2069 Register lreg_hi = left->as_register_hi();
2070
2071 if (right->is_double_cpu()) {
2072 // cpu register - cpu register
2073 Register rreg_lo = right->as_register_lo();
2074 Register rreg_hi = right->as_register_hi();
2075 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi));
2076 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo));
2077 switch (code) {
2078 case lir_add:
2079 __ addptr(lreg_lo, rreg_lo);
2080 NOT_LP64(__ adcl(lreg_hi, rreg_hi));
2081 break;
2082 case lir_sub:
2083 __ subptr(lreg_lo, rreg_lo);
2084 NOT_LP64(__ sbbl(lreg_hi, rreg_hi));
2085 break;
2086 case lir_mul:
2087 #ifdef _LP64
2088 __ imulq(lreg_lo, rreg_lo);
2089 #else
2090 assert(lreg_lo == rax && lreg_hi == rdx, "must be");
2091 __ imull(lreg_hi, rreg_lo);
2092 __ imull(rreg_hi, lreg_lo);
2093 __ addl (rreg_hi, lreg_hi);
2094 __ mull (rreg_lo);
2095 __ addl (lreg_hi, rreg_hi);
2096 #endif // _LP64
2097 break;
2098 default:
2099 ShouldNotReachHere();
2100 }
2101
2102 } else if (right->is_constant()) {
2103 // cpu register - constant
2104 #ifdef _LP64
2105 jlong c = right->as_constant_ptr()->as_jlong_bits();
2106 __ movptr(r10, (intptr_t) c);
2107 switch (code) {
2108 case lir_add:
2109 __ addptr(lreg_lo, r10);
2110 break;
2111 case lir_sub:
2112 __ subptr(lreg_lo, r10);
2113 break;
2114 default:
2115 ShouldNotReachHere();
2116 }
2117 #else
2118 jint c_lo = right->as_constant_ptr()->as_jint_lo();
2119 jint c_hi = right->as_constant_ptr()->as_jint_hi();
2120 switch (code) {
2121 case lir_add:
2122 __ addptr(lreg_lo, c_lo);
2123 __ adcl(lreg_hi, c_hi);
2124 break;
2125 case lir_sub:
2126 __ subptr(lreg_lo, c_lo);
2127 __ sbbl(lreg_hi, c_hi);
2128 break;
2129 default:
2130 ShouldNotReachHere();
2131 }
2132 #endif // _LP64
2133
2134 } else {
2135 ShouldNotReachHere();
2136 }
2137
2138 } else if (left->is_single_xmm()) {
2139 assert(left == dest, "left and dest must be equal");
2140 XMMRegister lreg = left->as_xmm_float_reg();
2141
2142 if (right->is_single_xmm()) {
2143 XMMRegister rreg = right->as_xmm_float_reg();
2144 switch (code) {
2145 case lir_add: __ addss(lreg, rreg); break;
2146 case lir_sub: __ subss(lreg, rreg); break;
2147 case lir_mul_strictfp: // fall through
2148 case lir_mul: __ mulss(lreg, rreg); break;
2149 case lir_div_strictfp: // fall through
2150 case lir_div: __ divss(lreg, rreg); break;
2151 default: ShouldNotReachHere();
2152 }
2153 } else {
2154 Address raddr;
2155 if (right->is_single_stack()) {
2156 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2157 } else if (right->is_constant()) {
2158 // hack for now
2159 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat())));
2160 } else {
2161 ShouldNotReachHere();
2162 }
2163 switch (code) {
2164 case lir_add: __ addss(lreg, raddr); break;
2165 case lir_sub: __ subss(lreg, raddr); break;
2166 case lir_mul_strictfp: // fall through
2167 case lir_mul: __ mulss(lreg, raddr); break;
2168 case lir_div_strictfp: // fall through
2169 case lir_div: __ divss(lreg, raddr); break;
2170 default: ShouldNotReachHere();
2171 }
2172 }
2173
2174 } else if (left->is_double_xmm()) {
2175 assert(left == dest, "left and dest must be equal");
2176
2177 XMMRegister lreg = left->as_xmm_double_reg();
2178 if (right->is_double_xmm()) {
2179 XMMRegister rreg = right->as_xmm_double_reg();
2180 switch (code) {
2181 case lir_add: __ addsd(lreg, rreg); break;
2182 case lir_sub: __ subsd(lreg, rreg); break;
2183 case lir_mul_strictfp: // fall through
2184 case lir_mul: __ mulsd(lreg, rreg); break;
2185 case lir_div_strictfp: // fall through
2186 case lir_div: __ divsd(lreg, rreg); break;
2187 default: ShouldNotReachHere();
2188 }
2189 } else {
2190 Address raddr;
2191 if (right->is_double_stack()) {
2192 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2193 } else if (right->is_constant()) {
2194 // hack for now
2195 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2196 } else {
2197 ShouldNotReachHere();
2198 }
2199 switch (code) {
2200 case lir_add: __ addsd(lreg, raddr); break;
2201 case lir_sub: __ subsd(lreg, raddr); break;
2202 case lir_mul_strictfp: // fall through
2203 case lir_mul: __ mulsd(lreg, raddr); break;
2204 case lir_div_strictfp: // fall through
2205 case lir_div: __ divsd(lreg, raddr); break;
2206 default: ShouldNotReachHere();
2207 }
2208 }
2209
2210 } else if (left->is_single_fpu()) {
2211 assert(dest->is_single_fpu(), "fpu stack allocation required");
2212
2213 if (right->is_single_fpu()) {
2214 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack);
2215
2216 } else {
2217 assert(left->fpu_regnr() == 0, "left must be on TOS");
2218 assert(dest->fpu_regnr() == 0, "dest must be on TOS");
2219
2220 Address raddr;
2221 if (right->is_single_stack()) {
2222 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2223 } else if (right->is_constant()) {
2224 address const_addr = float_constant(right->as_jfloat());
2225 assert(const_addr != NULL, "incorrect float/double constant maintainance");
2226 // hack for now
2227 raddr = __ as_Address(InternalAddress(const_addr));
2228 } else {
2229 ShouldNotReachHere();
2230 }
2231
2232 switch (code) {
2233 case lir_add: __ fadd_s(raddr); break;
2234 case lir_sub: __ fsub_s(raddr); break;
2235 case lir_mul_strictfp: // fall through
2236 case lir_mul: __ fmul_s(raddr); break;
2237 case lir_div_strictfp: // fall through
2238 case lir_div: __ fdiv_s(raddr); break;
2239 default: ShouldNotReachHere();
2240 }
2241 }
2242
2243 } else if (left->is_double_fpu()) {
2244 assert(dest->is_double_fpu(), "fpu stack allocation required");
2245
2246 if (code == lir_mul_strictfp || code == lir_div_strictfp) {
2247 // Double values require special handling for strictfp mul/div on x86
2248 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
2249 __ fmulp(left->fpu_regnrLo() + 1);
2250 }
2251
2252 if (right->is_double_fpu()) {
2253 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack);
2254
2255 } else {
2256 assert(left->fpu_regnrLo() == 0, "left must be on TOS");
2257 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS");
2258
2259 Address raddr;
2260 if (right->is_double_stack()) {
2261 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2262 } else if (right->is_constant()) {
2263 // hack for now
2264 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2265 } else {
2266 ShouldNotReachHere();
2267 }
2268
2269 switch (code) {
2270 case lir_add: __ fadd_d(raddr); break;
2271 case lir_sub: __ fsub_d(raddr); break;
2272 case lir_mul_strictfp: // fall through
2273 case lir_mul: __ fmul_d(raddr); break;
2274 case lir_div_strictfp: // fall through
2275 case lir_div: __ fdiv_d(raddr); break;
2276 default: ShouldNotReachHere();
2277 }
2278 }
2279
2280 if (code == lir_mul_strictfp || code == lir_div_strictfp) {
2281 // Double values require special handling for strictfp mul/div on x86
2282 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
2283 __ fmulp(dest->fpu_regnrLo() + 1);
2284 }
2285
2286 } else if (left->is_single_stack() || left->is_address()) {
2287 assert(left == dest, "left and dest must be equal");
2288
2289 Address laddr;
2290 if (left->is_single_stack()) {
2291 laddr = frame_map()->address_for_slot(left->single_stack_ix());
2292 } else if (left->is_address()) {
2293 laddr = as_Address(left->as_address_ptr());
2294 } else {
2295 ShouldNotReachHere();
2296 }
2297
2298 if (right->is_single_cpu()) {
2299 Register rreg = right->as_register();
2300 switch (code) {
2301 case lir_add: __ addl(laddr, rreg); break;
2302 case lir_sub: __ subl(laddr, rreg); break;
2303 default: ShouldNotReachHere();
2304 }
2305 } else if (right->is_constant()) {
2306 jint c = right->as_constant_ptr()->as_jint();
2307 switch (code) {
2308 case lir_add: {
2309 __ incrementl(laddr, c);
2310 break;
2311 }
2312 case lir_sub: {
2313 __ decrementl(laddr, c);
2314 break;
2315 }
2316 default: ShouldNotReachHere();
2317 }
2318 } else {
2319 ShouldNotReachHere();
2320 }
2321
2322 } else {
2323 ShouldNotReachHere();
2324 }
2325 }
2326
2327 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) {
2328 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR");
2329 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR");
2330 assert(left_index == 0 || right_index == 0, "either must be on top of stack");
2331
2332 bool left_is_tos = (left_index == 0);
2333 bool dest_is_tos = (dest_index == 0);
2334 int non_tos_index = (left_is_tos ? right_index : left_index);
2335
2336 switch (code) {
2337 case lir_add:
2338 if (pop_fpu_stack) __ faddp(non_tos_index);
2339 else if (dest_is_tos) __ fadd (non_tos_index);
2340 else __ fadda(non_tos_index);
2341 break;
2342
2343 case lir_sub:
2344 if (left_is_tos) {
2345 if (pop_fpu_stack) __ fsubrp(non_tos_index);
2346 else if (dest_is_tos) __ fsub (non_tos_index);
2347 else __ fsubra(non_tos_index);
2348 } else {
2349 if (pop_fpu_stack) __ fsubp (non_tos_index);
2350 else if (dest_is_tos) __ fsubr (non_tos_index);
2351 else __ fsuba (non_tos_index);
2352 }
2353 break;
2354
2355 case lir_mul_strictfp: // fall through
2356 case lir_mul:
2357 if (pop_fpu_stack) __ fmulp(non_tos_index);
2358 else if (dest_is_tos) __ fmul (non_tos_index);
2359 else __ fmula(non_tos_index);
2360 break;
2361
2362 case lir_div_strictfp: // fall through
2363 case lir_div:
2364 if (left_is_tos) {
2365 if (pop_fpu_stack) __ fdivrp(non_tos_index);
2366 else if (dest_is_tos) __ fdiv (non_tos_index);
2367 else __ fdivra(non_tos_index);
2368 } else {
2369 if (pop_fpu_stack) __ fdivp (non_tos_index);
2370 else if (dest_is_tos) __ fdivr (non_tos_index);
2371 else __ fdiva (non_tos_index);
2372 }
2373 break;
2374
2375 case lir_rem:
2376 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation");
2377 __ fremr(noreg);
2378 break;
2379
2380 default:
2381 ShouldNotReachHere();
2382 }
2383 }
2384
2385
2386 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) {
2387 if (value->is_double_xmm()) {
2388 switch(code) {
2389 case lir_abs :
2390 {
2391 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) {
2392 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg());
2393 }
2394 __ andpd(dest->as_xmm_double_reg(),
2395 ExternalAddress((address)double_signmask_pool));
2396 }
2397 break;
2398
2399 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break;
2400 // all other intrinsics are not available in the SSE instruction set, so FPU is used
2401 default : ShouldNotReachHere();
2402 }
2403
2404 } else if (value->is_double_fpu()) {
2405 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS");
2406 switch(code) {
2407 case lir_abs : __ fabs() ; break;
2408 case lir_sqrt : __ fsqrt(); break;
2409 default : ShouldNotReachHere();
2410 }
2411 } else {
2412 Unimplemented();
2413 }
2414 }
2415
2416 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) {
2417 // assert(left->destroys_register(), "check");
2418 if (left->is_single_cpu()) {
2419 Register reg = left->as_register();
2420 if (right->is_constant()) {
2421 int val = right->as_constant_ptr()->as_jint();
2422 switch (code) {
2423 case lir_logic_and: __ andl (reg, val); break;
2424 case lir_logic_or: __ orl (reg, val); break;
2425 case lir_logic_xor: __ xorl (reg, val); break;
2426 default: ShouldNotReachHere();
2427 }
2428 } else if (right->is_stack()) {
2429 // added support for stack operands
2430 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2431 switch (code) {
2432 case lir_logic_and: __ andl (reg, raddr); break;
2433 case lir_logic_or: __ orl (reg, raddr); break;
2434 case lir_logic_xor: __ xorl (reg, raddr); break;
2435 default: ShouldNotReachHere();
2436 }
2437 } else {
2438 Register rright = right->as_register();
2439 switch (code) {
2440 case lir_logic_and: __ andptr (reg, rright); break;
2441 case lir_logic_or : __ orptr (reg, rright); break;
2442 case lir_logic_xor: __ xorptr (reg, rright); break;
2443 default: ShouldNotReachHere();
2444 }
2445 }
2446 move_regs(reg, dst->as_register());
2447 } else {
2448 Register l_lo = left->as_register_lo();
2449 Register l_hi = left->as_register_hi();
2450 if (right->is_constant()) {
2451 #ifdef _LP64
2452 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong());
2453 switch (code) {
2454 case lir_logic_and:
2455 __ andq(l_lo, rscratch1);
2456 break;
2457 case lir_logic_or:
2458 __ orq(l_lo, rscratch1);
2459 break;
2460 case lir_logic_xor:
2461 __ xorq(l_lo, rscratch1);
2462 break;
2463 default: ShouldNotReachHere();
2464 }
2465 #else
2466 int r_lo = right->as_constant_ptr()->as_jint_lo();
2467 int r_hi = right->as_constant_ptr()->as_jint_hi();
2468 switch (code) {
2469 case lir_logic_and:
2470 __ andl(l_lo, r_lo);
2471 __ andl(l_hi, r_hi);
2472 break;
2473 case lir_logic_or:
2474 __ orl(l_lo, r_lo);
2475 __ orl(l_hi, r_hi);
2476 break;
2477 case lir_logic_xor:
2478 __ xorl(l_lo, r_lo);
2479 __ xorl(l_hi, r_hi);
2480 break;
2481 default: ShouldNotReachHere();
2482 }
2483 #endif // _LP64
2484 } else {
2485 #ifdef _LP64
2486 Register r_lo;
2487 if (right->type() == T_OBJECT || right->type() == T_ARRAY) {
2488 r_lo = right->as_register();
2489 } else {
2490 r_lo = right->as_register_lo();
2491 }
2492 #else
2493 Register r_lo = right->as_register_lo();
2494 Register r_hi = right->as_register_hi();
2495 assert(l_lo != r_hi, "overwriting registers");
2496 #endif
2497 switch (code) {
2498 case lir_logic_and:
2499 __ andptr(l_lo, r_lo);
2500 NOT_LP64(__ andptr(l_hi, r_hi);)
2501 break;
2502 case lir_logic_or:
2503 __ orptr(l_lo, r_lo);
2504 NOT_LP64(__ orptr(l_hi, r_hi);)
2505 break;
2506 case lir_logic_xor:
2507 __ xorptr(l_lo, r_lo);
2508 NOT_LP64(__ xorptr(l_hi, r_hi);)
2509 break;
2510 default: ShouldNotReachHere();
2511 }
2512 }
2513
2514 Register dst_lo = dst->as_register_lo();
2515 Register dst_hi = dst->as_register_hi();
2516
2517 #ifdef _LP64
2518 move_regs(l_lo, dst_lo);
2519 #else
2520 if (dst_lo == l_hi) {
2521 assert(dst_hi != l_lo, "overwriting registers");
2522 move_regs(l_hi, dst_hi);
2523 move_regs(l_lo, dst_lo);
2524 } else {
2525 assert(dst_lo != l_hi, "overwriting registers");
2526 move_regs(l_lo, dst_lo);
2527 move_regs(l_hi, dst_hi);
2528 }
2529 #endif // _LP64
2530 }
2531 }
2532
2533
2534 // we assume that rax, and rdx can be overwritten
2535 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) {
2536
2537 assert(left->is_single_cpu(), "left must be register");
2538 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant");
2539 assert(result->is_single_cpu(), "result must be register");
2540
2541 // assert(left->destroys_register(), "check");
2542 // assert(right->destroys_register(), "check");
2543
2544 Register lreg = left->as_register();
2545 Register dreg = result->as_register();
2546
2547 if (right->is_constant()) {
2548 int divisor = right->as_constant_ptr()->as_jint();
2549 assert(divisor > 0 && is_power_of_2(divisor), "must be");
2550 if (code == lir_idiv) {
2551 assert(lreg == rax, "must be rax,");
2552 assert(temp->as_register() == rdx, "tmp register must be rdx");
2553 __ cdql(); // sign extend into rdx:rax
2554 if (divisor == 2) {
2555 __ subl(lreg, rdx);
2556 } else {
2557 __ andl(rdx, divisor - 1);
2558 __ addl(lreg, rdx);
2559 }
2560 __ sarl(lreg, log2_intptr(divisor));
2561 move_regs(lreg, dreg);
2562 } else if (code == lir_irem) {
2563 Label done;
2564 __ mov(dreg, lreg);
2565 __ andl(dreg, 0x80000000 | (divisor - 1));
2566 __ jcc(Assembler::positive, done);
2567 __ decrement(dreg);
2568 __ orl(dreg, ~(divisor - 1));
2569 __ increment(dreg);
2570 __ bind(done);
2571 } else {
2572 ShouldNotReachHere();
2573 }
2574 } else {
2575 Register rreg = right->as_register();
2576 assert(lreg == rax, "left register must be rax,");
2577 assert(rreg != rdx, "right register must not be rdx");
2578 assert(temp->as_register() == rdx, "tmp register must be rdx");
2579
2580 move_regs(lreg, rax);
2581
2582 int idivl_offset = __ corrected_idivl(rreg);
2583 add_debug_info_for_div0(idivl_offset, info);
2584 if (code == lir_irem) {
2585 move_regs(rdx, dreg); // result is in rdx
2586 } else {
2587 move_regs(rax, dreg);
2588 }
2589 }
2590 }
2591
2592
2593 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) {
2594 if (opr1->is_single_cpu()) {
2595 Register reg1 = opr1->as_register();
2596 if (opr2->is_single_cpu()) {
2597 // cpu register - cpu register
2598 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) {
2599 __ cmpptr(reg1, opr2->as_register());
2600 } else {
2601 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?");
2602 __ cmpl(reg1, opr2->as_register());
2603 }
2604 } else if (opr2->is_stack()) {
2605 // cpu register - stack
2606 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) {
2607 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2608 } else {
2609 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2610 }
2611 } else if (opr2->is_constant()) {
2612 // cpu register - constant
2613 LIR_Const* c = opr2->as_constant_ptr();
2614 if (c->type() == T_INT) {
2615 __ cmpl(reg1, c->as_jint());
2616 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2617 // In 64bit oops are single register
2618 jobject o = c->as_jobject();
2619 if (o == NULL) {
2620 __ cmpptr(reg1, (int32_t)NULL_WORD);
2621 } else {
2622 #ifdef _LP64
2623 __ movoop(rscratch1, o);
2624 __ cmpptr(reg1, rscratch1);
2625 #else
2626 __ cmpoop(reg1, c->as_jobject());
2627 #endif // _LP64
2628 }
2629 } else {
2630 fatal("unexpected type: %s", basictype_to_str(c->type()));
2631 }
2632 // cpu register - address
2633 } else if (opr2->is_address()) {
2634 if (op->info() != NULL) {
2635 add_debug_info_for_null_check_here(op->info());
2636 }
2637 __ cmpl(reg1, as_Address(opr2->as_address_ptr()));
2638 } else {
2639 ShouldNotReachHere();
2640 }
2641
2642 } else if(opr1->is_double_cpu()) {
2643 Register xlo = opr1->as_register_lo();
2644 Register xhi = opr1->as_register_hi();
2645 if (opr2->is_double_cpu()) {
2646 #ifdef _LP64
2647 __ cmpptr(xlo, opr2->as_register_lo());
2648 #else
2649 // cpu register - cpu register
2650 Register ylo = opr2->as_register_lo();
2651 Register yhi = opr2->as_register_hi();
2652 __ subl(xlo, ylo);
2653 __ sbbl(xhi, yhi);
2654 if (condition == lir_cond_equal || condition == lir_cond_notEqual) {
2655 __ orl(xhi, xlo);
2656 }
2657 #endif // _LP64
2658 } else if (opr2->is_constant()) {
2659 // cpu register - constant 0
2660 assert(opr2->as_jlong() == (jlong)0, "only handles zero");
2661 #ifdef _LP64
2662 __ cmpptr(xlo, (int32_t)opr2->as_jlong());
2663 #else
2664 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case");
2665 __ orl(xhi, xlo);
2666 #endif // _LP64
2667 } else {
2668 ShouldNotReachHere();
2669 }
2670
2671 } else if (opr1->is_single_xmm()) {
2672 XMMRegister reg1 = opr1->as_xmm_float_reg();
2673 if (opr2->is_single_xmm()) {
2674 // xmm register - xmm register
2675 __ ucomiss(reg1, opr2->as_xmm_float_reg());
2676 } else if (opr2->is_stack()) {
2677 // xmm register - stack
2678 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2679 } else if (opr2->is_constant()) {
2680 // xmm register - constant
2681 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat())));
2682 } else if (opr2->is_address()) {
2683 // xmm register - address
2684 if (op->info() != NULL) {
2685 add_debug_info_for_null_check_here(op->info());
2686 }
2687 __ ucomiss(reg1, as_Address(opr2->as_address_ptr()));
2688 } else {
2689 ShouldNotReachHere();
2690 }
2691
2692 } else if (opr1->is_double_xmm()) {
2693 XMMRegister reg1 = opr1->as_xmm_double_reg();
2694 if (opr2->is_double_xmm()) {
2695 // xmm register - xmm register
2696 __ ucomisd(reg1, opr2->as_xmm_double_reg());
2697 } else if (opr2->is_stack()) {
2698 // xmm register - stack
2699 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix()));
2700 } else if (opr2->is_constant()) {
2701 // xmm register - constant
2702 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble())));
2703 } else if (opr2->is_address()) {
2704 // xmm register - address
2705 if (op->info() != NULL) {
2706 add_debug_info_for_null_check_here(op->info());
2707 }
2708 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address()));
2709 } else {
2710 ShouldNotReachHere();
2711 }
2712
2713 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) {
2714 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)");
2715 assert(opr2->is_fpu_register(), "both must be registers");
2716 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2717
2718 } else if (opr1->is_address() && opr2->is_constant()) {
2719 LIR_Const* c = opr2->as_constant_ptr();
2720 #ifdef _LP64
2721 if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2722 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse");
2723 __ movoop(rscratch1, c->as_jobject());
2724 }
2725 #endif // LP64
2726 if (op->info() != NULL) {
2727 add_debug_info_for_null_check_here(op->info());
2728 }
2729 // special case: address - constant
2730 LIR_Address* addr = opr1->as_address_ptr();
2731 if (c->type() == T_INT) {
2732 __ cmpl(as_Address(addr), c->as_jint());
2733 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2734 #ifdef _LP64
2735 // %%% Make this explode if addr isn't reachable until we figure out a
2736 // better strategy by giving noreg as the temp for as_Address
2737 __ cmpptr(rscratch1, as_Address(addr, noreg));
2738 #else
2739 __ cmpoop(as_Address(addr), c->as_jobject());
2740 #endif // _LP64
2741 } else {
2742 ShouldNotReachHere();
2743 }
2744
2745 } else {
2746 ShouldNotReachHere();
2747 }
2748 }
2749
2750 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) {
2751 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) {
2752 if (left->is_single_xmm()) {
2753 assert(right->is_single_xmm(), "must match");
2754 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2755 } else if (left->is_double_xmm()) {
2756 assert(right->is_double_xmm(), "must match");
2757 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2758
2759 } else {
2760 assert(left->is_single_fpu() || left->is_double_fpu(), "must be");
2761 assert(right->is_single_fpu() || right->is_double_fpu(), "must match");
2762
2763 assert(left->fpu() == 0, "left must be on TOS");
2764 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(),
2765 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2766 }
2767 } else {
2768 assert(code == lir_cmp_l2i, "check");
2769 #ifdef _LP64
2770 Label done;
2771 Register dest = dst->as_register();
2772 __ cmpptr(left->as_register_lo(), right->as_register_lo());
2773 __ movl(dest, -1);
2774 __ jccb(Assembler::less, done);
2775 __ set_byte_if_not_zero(dest);
2776 __ movzbl(dest, dest);
2777 __ bind(done);
2778 #else
2779 __ lcmp2int(left->as_register_hi(),
2780 left->as_register_lo(),
2781 right->as_register_hi(),
2782 right->as_register_lo());
2783 move_regs(left->as_register_hi(), dst->as_register());
2784 #endif // _LP64
2785 }
2786 }
2787
2788
2789 void LIR_Assembler::align_call(LIR_Code code) {
2790 if (os::is_MP()) {
2791 // make sure that the displacement word of the call ends up word aligned
2792 int offset = __ offset();
2793 switch (code) {
2794 case lir_static_call:
2795 case lir_optvirtual_call:
2796 case lir_dynamic_call:
2797 offset += NativeCall::displacement_offset;
2798 break;
2799 case lir_icvirtual_call:
2800 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size;
2801 break;
2802 case lir_virtual_call: // currently, sparc-specific for niagara
2803 default: ShouldNotReachHere();
2804 }
2805 __ align(BytesPerWord, offset);
2806 }
2807 }
2808
2809
2810 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) {
2811 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0,
2812 "must be aligned");
2813 __ call(AddressLiteral(op->addr(), rtype));
2814 add_call_info(code_offset(), op->info());
2815 }
2816
2817
2818 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) {
2819 __ ic_call(op->addr());
2820 add_call_info(code_offset(), op->info());
2821 assert(!os::is_MP() ||
2822 (__ offset() - NativeCall::instruction_size + NativeCall::displacement_offset) % BytesPerWord == 0,
2823 "must be aligned");
2824 }
2825
2826
2827 /* Currently, vtable-dispatch is only enabled for sparc platforms */
2828 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) {
2829 ShouldNotReachHere();
2830 }
2831
2832
2833 void LIR_Assembler::emit_static_call_stub() {
2834 address call_pc = __ pc();
2835 address stub = __ start_a_stub(call_stub_size());
2836 if (stub == NULL) {
2837 bailout("static call stub overflow");
2838 return;
2839 }
2840
2841 int start = __ offset();
2842 if (os::is_MP()) {
2843 // make sure that the displacement word of the call ends up word aligned
2844 __ align(BytesPerWord, __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset);
2845 }
2846 __ relocate(static_stub_Relocation::spec(call_pc, false /* is_aot */));
2847 __ mov_metadata(rbx, (Metadata*)NULL);
2848 // must be set to -1 at code generation time
2849 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP");
2850 // On 64bit this will die since it will take a movq & jmp, must be only a jmp
2851 __ jump(RuntimeAddress(__ pc()));
2852
2853 if (UseAOT) {
2854 // Trampoline to aot code
2855 __ relocate(static_stub_Relocation::spec(call_pc, true /* is_aot */));
2856 #ifdef _LP64
2857 __ mov64(rax, CONST64(0)); // address is zapped till fixup time.
2858 #else
2859 __ movl(rax, 0xdeadffff); // address is zapped till fixup time.
2860 #endif
2861 __ jmp(rax);
2862 }
2863 assert(__ offset() - start <= call_stub_size(), "stub too big");
2864 __ end_a_stub();
2865 }
2866
2867
2868 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2869 assert(exceptionOop->as_register() == rax, "must match");
2870 assert(exceptionPC->as_register() == rdx, "must match");
2871
2872 // exception object is not added to oop map by LinearScan
2873 // (LinearScan assumes that no oops are in fixed registers)
2874 info->add_register_oop(exceptionOop);
2875 Runtime1::StubID unwind_id;
2876
2877 // get current pc information
2878 // pc is only needed if the method has an exception handler, the unwind code does not need it.
2879 int pc_for_athrow_offset = __ offset();
2880 InternalAddress pc_for_athrow(__ pc());
2881 __ lea(exceptionPC->as_register(), pc_for_athrow);
2882 add_call_info(pc_for_athrow_offset, info); // for exception handler
2883
2884 __ verify_not_null_oop(rax);
2885 // search an exception handler (rax: exception oop, rdx: throwing pc)
2886 if (compilation()->has_fpu_code()) {
2887 unwind_id = Runtime1::handle_exception_id;
2888 } else {
2889 unwind_id = Runtime1::handle_exception_nofpu_id;
2890 }
2891 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id)));
2892
2893 // enough room for two byte trap
2894 __ nop();
2895 }
2896
2897
2898 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) {
2899 assert(exceptionOop->as_register() == rax, "must match");
2900
2901 __ jmp(_unwind_handler_entry);
2902 }
2903
2904
2905 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) {
2906
2907 // optimized version for linear scan:
2908 // * count must be already in ECX (guaranteed by LinearScan)
2909 // * left and dest must be equal
2910 // * tmp must be unused
2911 assert(count->as_register() == SHIFT_count, "count must be in ECX");
2912 assert(left == dest, "left and dest must be equal");
2913 assert(tmp->is_illegal(), "wasting a register if tmp is allocated");
2914
2915 if (left->is_single_cpu()) {
2916 Register value = left->as_register();
2917 assert(value != SHIFT_count, "left cannot be ECX");
2918
2919 switch (code) {
2920 case lir_shl: __ shll(value); break;
2921 case lir_shr: __ sarl(value); break;
2922 case lir_ushr: __ shrl(value); break;
2923 default: ShouldNotReachHere();
2924 }
2925 } else if (left->is_double_cpu()) {
2926 Register lo = left->as_register_lo();
2927 Register hi = left->as_register_hi();
2928 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX");
2929 #ifdef _LP64
2930 switch (code) {
2931 case lir_shl: __ shlptr(lo); break;
2932 case lir_shr: __ sarptr(lo); break;
2933 case lir_ushr: __ shrptr(lo); break;
2934 default: ShouldNotReachHere();
2935 }
2936 #else
2937
2938 switch (code) {
2939 case lir_shl: __ lshl(hi, lo); break;
2940 case lir_shr: __ lshr(hi, lo, true); break;
2941 case lir_ushr: __ lshr(hi, lo, false); break;
2942 default: ShouldNotReachHere();
2943 }
2944 #endif // LP64
2945 } else {
2946 ShouldNotReachHere();
2947 }
2948 }
2949
2950
2951 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) {
2952 if (dest->is_single_cpu()) {
2953 // first move left into dest so that left is not destroyed by the shift
2954 Register value = dest->as_register();
2955 count = count & 0x1F; // Java spec
2956
2957 move_regs(left->as_register(), value);
2958 switch (code) {
2959 case lir_shl: __ shll(value, count); break;
2960 case lir_shr: __ sarl(value, count); break;
2961 case lir_ushr: __ shrl(value, count); break;
2962 default: ShouldNotReachHere();
2963 }
2964 } else if (dest->is_double_cpu()) {
2965 #ifndef _LP64
2966 Unimplemented();
2967 #else
2968 // first move left into dest so that left is not destroyed by the shift
2969 Register value = dest->as_register_lo();
2970 count = count & 0x1F; // Java spec
2971
2972 move_regs(left->as_register_lo(), value);
2973 switch (code) {
2974 case lir_shl: __ shlptr(value, count); break;
2975 case lir_shr: __ sarptr(value, count); break;
2976 case lir_ushr: __ shrptr(value, count); break;
2977 default: ShouldNotReachHere();
2978 }
2979 #endif // _LP64
2980 } else {
2981 ShouldNotReachHere();
2982 }
2983 }
2984
2985
2986 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) {
2987 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
2988 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
2989 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
2990 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r);
2991 }
2992
2993
2994 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) {
2995 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
2996 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
2997 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
2998 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c);
2999 }
3000
3001
3002 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) {
3003 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3004 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3005 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3006 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o);
3007 }
3008
3009
3010 void LIR_Assembler::store_parameter(Metadata* m, int offset_from_rsp_in_words) {
3011 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3012 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3013 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3014 __ mov_metadata(Address(rsp, offset_from_rsp_in_bytes), m);
3015 }
3016
3017
3018 // This code replaces a call to arraycopy; no exception may
3019 // be thrown in this code, they must be thrown in the System.arraycopy
3020 // activation frame; we could save some checks if this would not be the case
3021 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
3022 ciArrayKlass* default_type = op->expected_type();
3023 Register src = op->src()->as_register();
3024 Register dst = op->dst()->as_register();
3025 Register src_pos = op->src_pos()->as_register();
3026 Register dst_pos = op->dst_pos()->as_register();
3027 Register length = op->length()->as_register();
3028 Register tmp = op->tmp()->as_register();
3029
3030 CodeStub* stub = op->stub();
3031 int flags = op->flags();
3032 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL;
3033 if (basic_type == T_ARRAY) basic_type = T_OBJECT;
3034
3035 // if we don't know anything, just go through the generic arraycopy
3036 if (default_type == NULL) {
3037 Label done;
3038 // save outgoing arguments on stack in case call to System.arraycopy is needed
3039 // HACK ALERT. This code used to push the parameters in a hardwired fashion
3040 // for interpreter calling conventions. Now we have to do it in new style conventions.
3041 // For the moment until C1 gets the new register allocator I just force all the
3042 // args to the right place (except the register args) and then on the back side
3043 // reload the register args properly if we go slow path. Yuck
3044
3045 // These are proper for the calling convention
3046 store_parameter(length, 2);
3047 store_parameter(dst_pos, 1);
3048 store_parameter(dst, 0);
3049
3050 // these are just temporary placements until we need to reload
3051 store_parameter(src_pos, 3);
3052 store_parameter(src, 4);
3053 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");)
3054
3055 address C_entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy);
3056
3057 address copyfunc_addr = StubRoutines::generic_arraycopy();
3058
3059 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint
3060 #ifdef _LP64
3061 // The arguments are in java calling convention so we can trivially shift them to C
3062 // convention
3063 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
3064 __ mov(c_rarg0, j_rarg0);
3065 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4);
3066 __ mov(c_rarg1, j_rarg1);
3067 assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
3068 __ mov(c_rarg2, j_rarg2);
3069 assert_different_registers(c_rarg3, j_rarg4);
3070 __ mov(c_rarg3, j_rarg3);
3071 #ifdef _WIN64
3072 // Allocate abi space for args but be sure to keep stack aligned
3073 __ subptr(rsp, 6*wordSize);
3074 store_parameter(j_rarg4, 4);
3075 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3076 __ call(RuntimeAddress(C_entry));
3077 } else {
3078 #ifndef PRODUCT
3079 if (PrintC1Statistics) {
3080 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3081 }
3082 #endif
3083 __ call(RuntimeAddress(copyfunc_addr));
3084 }
3085 __ addptr(rsp, 6*wordSize);
3086 #else
3087 __ mov(c_rarg4, j_rarg4);
3088 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3089 __ call(RuntimeAddress(C_entry));
3090 } else {
3091 #ifndef PRODUCT
3092 if (PrintC1Statistics) {
3093 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3094 }
3095 #endif
3096 __ call(RuntimeAddress(copyfunc_addr));
3097 }
3098 #endif // _WIN64
3099 #else
3100 __ push(length);
3101 __ push(dst_pos);
3102 __ push(dst);
3103 __ push(src_pos);
3104 __ push(src);
3105
3106 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3107 __ call_VM_leaf(C_entry, 5); // removes pushed parameter from the stack
3108 } else {
3109 #ifndef PRODUCT
3110 if (PrintC1Statistics) {
3111 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3112 }
3113 #endif
3114 __ call_VM_leaf(copyfunc_addr, 5); // removes pushed parameter from the stack
3115 }
3116
3117 #endif // _LP64
3118
3119 __ cmpl(rax, 0);
3120 __ jcc(Assembler::equal, *stub->continuation());
3121
3122 if (copyfunc_addr != NULL) {
3123 __ mov(tmp, rax);
3124 __ xorl(tmp, -1);
3125 }
3126
3127 // Reload values from the stack so they are where the stub
3128 // expects them.
3129 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3130 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3131 __ movptr (length, Address(rsp, 2*BytesPerWord));
3132 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3133 __ movptr (src, Address(rsp, 4*BytesPerWord));
3134
3135 if (copyfunc_addr != NULL) {
3136 __ subl(length, tmp);
3137 __ addl(src_pos, tmp);
3138 __ addl(dst_pos, tmp);
3139 }
3140 __ jmp(*stub->entry());
3141
3142 __ bind(*stub->continuation());
3143 return;
3144 }
3145
3146 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point");
3147
3148 int elem_size = type2aelembytes(basic_type);
3149 Address::ScaleFactor scale;
3150
3151 switch (elem_size) {
3152 case 1 :
3153 scale = Address::times_1;
3154 break;
3155 case 2 :
3156 scale = Address::times_2;
3157 break;
3158 case 4 :
3159 scale = Address::times_4;
3160 break;
3161 case 8 :
3162 scale = Address::times_8;
3163 break;
3164 default:
3165 scale = Address::no_scale;
3166 ShouldNotReachHere();
3167 }
3168
3169 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes());
3170 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes());
3171 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes());
3172 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes());
3173
3174 // length and pos's are all sign extended at this point on 64bit
3175
3176 // test for NULL
3177 if (flags & LIR_OpArrayCopy::src_null_check) {
3178 __ testptr(src, src);
3179 __ jcc(Assembler::zero, *stub->entry());
3180 }
3181 if (flags & LIR_OpArrayCopy::dst_null_check) {
3182 __ testptr(dst, dst);
3183 __ jcc(Assembler::zero, *stub->entry());
3184 }
3185
3186 // If the compiler was not able to prove that exact type of the source or the destination
3187 // of the arraycopy is an array type, check at runtime if the source or the destination is
3188 // an instance type.
3189 if (flags & LIR_OpArrayCopy::type_check) {
3190 if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
3191 __ load_klass(tmp, dst);
3192 __ cmpl(Address(tmp, in_bytes(Klass::layout_helper_offset())), Klass::_lh_neutral_value);
3193 __ jcc(Assembler::greaterEqual, *stub->entry());
3194 }
3195
3196 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
3197 __ load_klass(tmp, src);
3198 __ cmpl(Address(tmp, in_bytes(Klass::layout_helper_offset())), Klass::_lh_neutral_value);
3199 __ jcc(Assembler::greaterEqual, *stub->entry());
3200 }
3201 }
3202
3203 // check if negative
3204 if (flags & LIR_OpArrayCopy::src_pos_positive_check) {
3205 __ testl(src_pos, src_pos);
3206 __ jcc(Assembler::less, *stub->entry());
3207 }
3208 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) {
3209 __ testl(dst_pos, dst_pos);
3210 __ jcc(Assembler::less, *stub->entry());
3211 }
3212
3213 if (flags & LIR_OpArrayCopy::src_range_check) {
3214 __ lea(tmp, Address(src_pos, length, Address::times_1, 0));
3215 __ cmpl(tmp, src_length_addr);
3216 __ jcc(Assembler::above, *stub->entry());
3217 }
3218 if (flags & LIR_OpArrayCopy::dst_range_check) {
3219 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0));
3220 __ cmpl(tmp, dst_length_addr);
3221 __ jcc(Assembler::above, *stub->entry());
3222 }
3223
3224 if (flags & LIR_OpArrayCopy::length_positive_check) {
3225 __ testl(length, length);
3226 __ jcc(Assembler::less, *stub->entry());
3227 }
3228
3229 #ifdef _LP64
3230 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null
3231 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null
3232 #endif
3233
3234 if (flags & LIR_OpArrayCopy::type_check) {
3235 // We don't know the array types are compatible
3236 if (basic_type != T_OBJECT) {
3237 // Simple test for basic type arrays
3238 if (UseCompressedClassPointers) {
3239 __ movl(tmp, src_klass_addr);
3240 __ cmpl(tmp, dst_klass_addr);
3241 } else {
3242 __ movptr(tmp, src_klass_addr);
3243 __ cmpptr(tmp, dst_klass_addr);
3244 }
3245 __ jcc(Assembler::notEqual, *stub->entry());
3246 } else {
3247 // For object arrays, if src is a sub class of dst then we can
3248 // safely do the copy.
3249 Label cont, slow;
3250
3251 __ push(src);
3252 __ push(dst);
3253
3254 __ load_klass(src, src);
3255 __ load_klass(dst, dst);
3256
3257 __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, NULL);
3258
3259 __ push(src);
3260 __ push(dst);
3261 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
3262 __ pop(dst);
3263 __ pop(src);
3264
3265 __ cmpl(src, 0);
3266 __ jcc(Assembler::notEqual, cont);
3267
3268 __ bind(slow);
3269 __ pop(dst);
3270 __ pop(src);
3271
3272 address copyfunc_addr = StubRoutines::checkcast_arraycopy();
3273 if (copyfunc_addr != NULL) { // use stub if available
3274 // src is not a sub class of dst so we have to do a
3275 // per-element check.
3276
3277 int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray;
3278 if ((flags & mask) != mask) {
3279 // Check that at least both of them object arrays.
3280 assert(flags & mask, "one of the two should be known to be an object array");
3281
3282 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
3283 __ load_klass(tmp, src);
3284 } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
3285 __ load_klass(tmp, dst);
3286 }
3287 int lh_offset = in_bytes(Klass::layout_helper_offset());
3288 Address klass_lh_addr(tmp, lh_offset);
3289 jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
3290 __ cmpl(klass_lh_addr, objArray_lh);
3291 __ jcc(Assembler::notEqual, *stub->entry());
3292 }
3293
3294 // Spill because stubs can use any register they like and it's
3295 // easier to restore just those that we care about.
3296 store_parameter(dst, 0);
3297 store_parameter(dst_pos, 1);
3298 store_parameter(length, 2);
3299 store_parameter(src_pos, 3);
3300 store_parameter(src, 4);
3301
3302 #ifndef _LP64
3303 __ movptr(tmp, dst_klass_addr);
3304 __ movptr(tmp, Address(tmp, ObjArrayKlass::element_klass_offset()));
3305 __ push(tmp);
3306 __ movl(tmp, Address(tmp, Klass::super_check_offset_offset()));
3307 __ push(tmp);
3308 __ push(length);
3309 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3310 __ push(tmp);
3311 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3312 __ push(tmp);
3313
3314 __ call_VM_leaf(copyfunc_addr, 5);
3315 #else
3316 __ movl2ptr(length, length); //higher 32bits must be null
3317
3318 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3319 assert_different_registers(c_rarg0, dst, dst_pos, length);
3320 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3321 assert_different_registers(c_rarg1, dst, length);
3322
3323 __ mov(c_rarg2, length);
3324 assert_different_registers(c_rarg2, dst);
3325
3326 #ifdef _WIN64
3327 // Allocate abi space for args but be sure to keep stack aligned
3328 __ subptr(rsp, 6*wordSize);
3329 __ load_klass(c_rarg3, dst);
3330 __ movptr(c_rarg3, Address(c_rarg3, ObjArrayKlass::element_klass_offset()));
3331 store_parameter(c_rarg3, 4);
3332 __ movl(c_rarg3, Address(c_rarg3, Klass::super_check_offset_offset()));
3333 __ call(RuntimeAddress(copyfunc_addr));
3334 __ addptr(rsp, 6*wordSize);
3335 #else
3336 __ load_klass(c_rarg4, dst);
3337 __ movptr(c_rarg4, Address(c_rarg4, ObjArrayKlass::element_klass_offset()));
3338 __ movl(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset()));
3339 __ call(RuntimeAddress(copyfunc_addr));
3340 #endif
3341
3342 #endif
3343
3344 #ifndef PRODUCT
3345 if (PrintC1Statistics) {
3346 Label failed;
3347 __ testl(rax, rax);
3348 __ jcc(Assembler::notZero, failed);
3349 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt));
3350 __ bind(failed);
3351 }
3352 #endif
3353
3354 __ testl(rax, rax);
3355 __ jcc(Assembler::zero, *stub->continuation());
3356
3357 #ifndef PRODUCT
3358 if (PrintC1Statistics) {
3359 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt));
3360 }
3361 #endif
3362
3363 __ mov(tmp, rax);
3364
3365 __ xorl(tmp, -1);
3366
3367 // Restore previously spilled arguments
3368 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3369 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3370 __ movptr (length, Address(rsp, 2*BytesPerWord));
3371 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3372 __ movptr (src, Address(rsp, 4*BytesPerWord));
3373
3374
3375 __ subl(length, tmp);
3376 __ addl(src_pos, tmp);
3377 __ addl(dst_pos, tmp);
3378 }
3379
3380 __ jmp(*stub->entry());
3381
3382 __ bind(cont);
3383 __ pop(dst);
3384 __ pop(src);
3385 }
3386 }
3387
3388 #ifdef ASSERT
3389 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) {
3390 // Sanity check the known type with the incoming class. For the
3391 // primitive case the types must match exactly with src.klass and
3392 // dst.klass each exactly matching the default type. For the
3393 // object array case, if no type check is needed then either the
3394 // dst type is exactly the expected type and the src type is a
3395 // subtype which we can't check or src is the same array as dst
3396 // but not necessarily exactly of type default_type.
3397 Label known_ok, halt;
3398 __ mov_metadata(tmp, default_type->constant_encoding());
3399 #ifdef _LP64
3400 if (UseCompressedClassPointers) {
3401 __ encode_klass_not_null(tmp);
3402 }
3403 #endif
3404
3405 if (basic_type != T_OBJECT) {
3406
3407 if (UseCompressedClassPointers) __ cmpl(tmp, dst_klass_addr);
3408 else __ cmpptr(tmp, dst_klass_addr);
3409 __ jcc(Assembler::notEqual, halt);
3410 if (UseCompressedClassPointers) __ cmpl(tmp, src_klass_addr);
3411 else __ cmpptr(tmp, src_klass_addr);
3412 __ jcc(Assembler::equal, known_ok);
3413 } else {
3414 if (UseCompressedClassPointers) __ cmpl(tmp, dst_klass_addr);
3415 else __ cmpptr(tmp, dst_klass_addr);
3416 __ jcc(Assembler::equal, known_ok);
3417 __ cmpptr(src, dst);
3418 __ jcc(Assembler::equal, known_ok);
3419 }
3420 __ bind(halt);
3421 __ stop("incorrect type information in arraycopy");
3422 __ bind(known_ok);
3423 }
3424 #endif
3425
3426 #ifndef PRODUCT
3427 if (PrintC1Statistics) {
3428 __ incrementl(ExternalAddress(Runtime1::arraycopy_count_address(basic_type)));
3429 }
3430 #endif
3431
3432 #ifdef _LP64
3433 assert_different_registers(c_rarg0, dst, dst_pos, length);
3434 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3435 assert_different_registers(c_rarg1, length);
3436 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3437 __ mov(c_rarg2, length);
3438
3439 #else
3440 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3441 store_parameter(tmp, 0);
3442 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3443 store_parameter(tmp, 1);
3444 store_parameter(length, 2);
3445 #endif // _LP64
3446
3447 bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0;
3448 bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0;
3449 const char *name;
3450 address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false);
3451 __ call_VM_leaf(entry, 0);
3452
3453 __ bind(*stub->continuation());
3454 }
3455
3456 void LIR_Assembler::emit_updatecrc32(LIR_OpUpdateCRC32* op) {
3457 assert(op->crc()->is_single_cpu(), "crc must be register");
3458 assert(op->val()->is_single_cpu(), "byte value must be register");
3459 assert(op->result_opr()->is_single_cpu(), "result must be register");
3460 Register crc = op->crc()->as_register();
3461 Register val = op->val()->as_register();
3462 Register res = op->result_opr()->as_register();
3463
3464 assert_different_registers(val, crc, res);
3465
3466 __ lea(res, ExternalAddress(StubRoutines::crc_table_addr()));
3467 __ notl(crc); // ~crc
3468 __ update_byte_crc32(crc, val, res);
3469 __ notl(crc); // ~crc
3470 __ mov(res, crc);
3471 }
3472
3473 void LIR_Assembler::emit_lock(LIR_OpLock* op) {
3474 Register obj = op->obj_opr()->as_register(); // may not be an oop
3475 Register hdr = op->hdr_opr()->as_register();
3476 Register lock = op->lock_opr()->as_register();
3477 if (!UseFastLocking) {
3478 __ jmp(*op->stub()->entry());
3479 } else if (op->code() == lir_lock) {
3480 Register scratch = noreg;
3481 if (UseBiasedLocking) {
3482 scratch = op->scratch_opr()->as_register();
3483 }
3484 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3485 // add debug info for NullPointerException only if one is possible
3486 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry());
3487 if (op->info() != NULL) {
3488 add_debug_info_for_null_check(null_check_offset, op->info());
3489 }
3490 // done
3491 } else if (op->code() == lir_unlock) {
3492 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3493 __ unlock_object(hdr, obj, lock, *op->stub()->entry());
3494 } else {
3495 Unimplemented();
3496 }
3497 __ bind(*op->stub()->continuation());
3498 }
3499
3500
3501 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) {
3502 ciMethod* method = op->profiled_method();
3503 int bci = op->profiled_bci();
3504 ciMethod* callee = op->profiled_callee();
3505
3506 // Update counter for all call types
3507 ciMethodData* md = method->method_data_or_null();
3508 assert(md != NULL, "Sanity");
3509 ciProfileData* data = md->bci_to_data(bci);
3510 assert(data->is_CounterData(), "need CounterData for calls");
3511 assert(op->mdo()->is_single_cpu(), "mdo must be allocated");
3512 Register mdo = op->mdo()->as_register();
3513 __ mov_metadata(mdo, md->constant_encoding());
3514 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
3515 Bytecodes::Code bc = method->java_code_at_bci(bci);
3516 const bool callee_is_static = callee->is_loaded() && callee->is_static();
3517 // Perform additional virtual call profiling for invokevirtual and
3518 // invokeinterface bytecodes
3519 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) &&
3520 !callee_is_static && // required for optimized MH invokes
3521 C1ProfileVirtualCalls) {
3522 assert(op->recv()->is_single_cpu(), "recv must be allocated");
3523 Register recv = op->recv()->as_register();
3524 assert_different_registers(mdo, recv);
3525 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls");
3526 ciKlass* known_klass = op->known_holder();
3527 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) {
3528 // We know the type that will be seen at this call site; we can
3529 // statically update the MethodData* rather than needing to do
3530 // dynamic tests on the receiver type
3531
3532 // NOTE: we should probably put a lock around this search to
3533 // avoid collisions by concurrent compilations
3534 ciVirtualCallData* vc_data = (ciVirtualCallData*) data;
3535 uint i;
3536 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3537 ciKlass* receiver = vc_data->receiver(i);
3538 if (known_klass->equals(receiver)) {
3539 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3540 __ addptr(data_addr, DataLayout::counter_increment);
3541 return;
3542 }
3543 }
3544
3545 // Receiver type not found in profile data; select an empty slot
3546
3547 // Note that this is less efficient than it should be because it
3548 // always does a write to the receiver part of the
3549 // VirtualCallData rather than just the first time
3550 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3551 ciKlass* receiver = vc_data->receiver(i);
3552 if (receiver == NULL) {
3553 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)));
3554 __ mov_metadata(recv_addr, known_klass->constant_encoding());
3555 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3556 __ addptr(data_addr, DataLayout::counter_increment);
3557 return;
3558 }
3559 }
3560 } else {
3561 __ load_klass(recv, recv);
3562 Label update_done;
3563 type_profile_helper(mdo, md, data, recv, &update_done);
3564 // Receiver did not match any saved receiver and there is no empty row for it.
3565 // Increment total counter to indicate polymorphic case.
3566 __ addptr(counter_addr, DataLayout::counter_increment);
3567
3568 __ bind(update_done);
3569 }
3570 } else {
3571 // Static call
3572 __ addptr(counter_addr, DataLayout::counter_increment);
3573 }
3574 }
3575
3576 void LIR_Assembler::emit_profile_type(LIR_OpProfileType* op) {
3577 Register obj = op->obj()->as_register();
3578 Register tmp = op->tmp()->as_pointer_register();
3579 Address mdo_addr = as_Address(op->mdp()->as_address_ptr());
3580 ciKlass* exact_klass = op->exact_klass();
3581 intptr_t current_klass = op->current_klass();
3582 bool not_null = op->not_null();
3583 bool no_conflict = op->no_conflict();
3584
3585 Label update, next, none;
3586
3587 bool do_null = !not_null;
3588 bool exact_klass_set = exact_klass != NULL && ciTypeEntries::valid_ciklass(current_klass) == exact_klass;
3589 bool do_update = !TypeEntries::is_type_unknown(current_klass) && !exact_klass_set;
3590
3591 assert(do_null || do_update, "why are we here?");
3592 assert(!TypeEntries::was_null_seen(current_klass) || do_update, "why are we here?");
3593
3594 __ verify_oop(obj);
3595
3596 if (tmp != obj) {
3597 __ mov(tmp, obj);
3598 }
3599 if (do_null) {
3600 __ testptr(tmp, tmp);
3601 __ jccb(Assembler::notZero, update);
3602 if (!TypeEntries::was_null_seen(current_klass)) {
3603 __ orptr(mdo_addr, TypeEntries::null_seen);
3604 }
3605 if (do_update) {
3606 #ifndef ASSERT
3607 __ jmpb(next);
3608 }
3609 #else
3610 __ jmp(next);
3611 }
3612 } else {
3613 __ testptr(tmp, tmp);
3614 __ jccb(Assembler::notZero, update);
3615 __ stop("unexpect null obj");
3616 #endif
3617 }
3618
3619 __ bind(update);
3620
3621 if (do_update) {
3622 #ifdef ASSERT
3623 if (exact_klass != NULL) {
3624 Label ok;
3625 __ load_klass(tmp, tmp);
3626 __ push(tmp);
3627 __ mov_metadata(tmp, exact_klass->constant_encoding());
3628 __ cmpptr(tmp, Address(rsp, 0));
3629 __ jccb(Assembler::equal, ok);
3630 __ stop("exact klass and actual klass differ");
3631 __ bind(ok);
3632 __ pop(tmp);
3633 }
3634 #endif
3635 if (!no_conflict) {
3636 if (exact_klass == NULL || TypeEntries::is_type_none(current_klass)) {
3637 if (exact_klass != NULL) {
3638 __ mov_metadata(tmp, exact_klass->constant_encoding());
3639 } else {
3640 __ load_klass(tmp, tmp);
3641 }
3642
3643 __ xorptr(tmp, mdo_addr);
3644 __ testptr(tmp, TypeEntries::type_klass_mask);
3645 // klass seen before, nothing to do. The unknown bit may have been
3646 // set already but no need to check.
3647 __ jccb(Assembler::zero, next);
3648
3649 __ testptr(tmp, TypeEntries::type_unknown);
3650 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3651
3652 if (TypeEntries::is_type_none(current_klass)) {
3653 __ cmpptr(mdo_addr, 0);
3654 __ jccb(Assembler::equal, none);
3655 __ cmpptr(mdo_addr, TypeEntries::null_seen);
3656 __ jccb(Assembler::equal, none);
3657 // There is a chance that the checks above (re-reading profiling
3658 // data from memory) fail if another thread has just set the
3659 // profiling to this obj's klass
3660 __ xorptr(tmp, mdo_addr);
3661 __ testptr(tmp, TypeEntries::type_klass_mask);
3662 __ jccb(Assembler::zero, next);
3663 }
3664 } else {
3665 assert(ciTypeEntries::valid_ciklass(current_klass) != NULL &&
3666 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "conflict only");
3667
3668 __ movptr(tmp, mdo_addr);
3669 __ testptr(tmp, TypeEntries::type_unknown);
3670 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3671 }
3672
3673 // different than before. Cannot keep accurate profile.
3674 __ orptr(mdo_addr, TypeEntries::type_unknown);
3675
3676 if (TypeEntries::is_type_none(current_klass)) {
3677 __ jmpb(next);
3678
3679 __ bind(none);
3680 // first time here. Set profile type.
3681 __ movptr(mdo_addr, tmp);
3682 }
3683 } else {
3684 // There's a single possible klass at this profile point
3685 assert(exact_klass != NULL, "should be");
3686 if (TypeEntries::is_type_none(current_klass)) {
3687 __ mov_metadata(tmp, exact_klass->constant_encoding());
3688 __ xorptr(tmp, mdo_addr);
3689 __ testptr(tmp, TypeEntries::type_klass_mask);
3690 #ifdef ASSERT
3691 __ jcc(Assembler::zero, next);
3692
3693 {
3694 Label ok;
3695 __ push(tmp);
3696 __ cmpptr(mdo_addr, 0);
3697 __ jcc(Assembler::equal, ok);
3698 __ cmpptr(mdo_addr, TypeEntries::null_seen);
3699 __ jcc(Assembler::equal, ok);
3700 // may have been set by another thread
3701 __ mov_metadata(tmp, exact_klass->constant_encoding());
3702 __ xorptr(tmp, mdo_addr);
3703 __ testptr(tmp, TypeEntries::type_mask);
3704 __ jcc(Assembler::zero, ok);
3705
3706 __ stop("unexpected profiling mismatch");
3707 __ bind(ok);
3708 __ pop(tmp);
3709 }
3710 #else
3711 __ jccb(Assembler::zero, next);
3712 #endif
3713 // first time here. Set profile type.
3714 __ movptr(mdo_addr, tmp);
3715 } else {
3716 assert(ciTypeEntries::valid_ciklass(current_klass) != NULL &&
3717 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "inconsistent");
3718
3719 __ movptr(tmp, mdo_addr);
3720 __ testptr(tmp, TypeEntries::type_unknown);
3721 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3722
3723 __ orptr(mdo_addr, TypeEntries::type_unknown);
3724 }
3725 }
3726
3727 __ bind(next);
3728 }
3729 }
3730
3731 void LIR_Assembler::emit_delay(LIR_OpDelay*) {
3732 Unimplemented();
3733 }
3734
3735
3736 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) {
3737 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no));
3738 }
3739
3740
3741 void LIR_Assembler::align_backward_branch_target() {
3742 __ align(BytesPerWord);
3743 }
3744
3745
3746 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) {
3747 if (left->is_single_cpu()) {
3748 __ negl(left->as_register());
3749 move_regs(left->as_register(), dest->as_register());
3750
3751 } else if (left->is_double_cpu()) {
3752 Register lo = left->as_register_lo();
3753 #ifdef _LP64
3754 Register dst = dest->as_register_lo();
3755 __ movptr(dst, lo);
3756 __ negptr(dst);
3757 #else
3758 Register hi = left->as_register_hi();
3759 __ lneg(hi, lo);
3760 if (dest->as_register_lo() == hi) {
3761 assert(dest->as_register_hi() != lo, "destroying register");
3762 move_regs(hi, dest->as_register_hi());
3763 move_regs(lo, dest->as_register_lo());
3764 } else {
3765 move_regs(lo, dest->as_register_lo());
3766 move_regs(hi, dest->as_register_hi());
3767 }
3768 #endif // _LP64
3769
3770 } else if (dest->is_single_xmm()) {
3771 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) {
3772 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg());
3773 }
3774 if (UseAVX > 0) {
3775 __ vnegatess(dest->as_xmm_float_reg(), dest->as_xmm_float_reg(),
3776 ExternalAddress((address)float_signflip_pool));
3777 } else {
3778 __ xorps(dest->as_xmm_float_reg(),
3779 ExternalAddress((address)float_signflip_pool));
3780 }
3781 } else if (dest->is_double_xmm()) {
3782 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) {
3783 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg());
3784 }
3785 if (UseAVX > 0) {
3786 __ vnegatesd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg(),
3787 ExternalAddress((address)double_signflip_pool));
3788 } else {
3789 __ xorpd(dest->as_xmm_double_reg(),
3790 ExternalAddress((address)double_signflip_pool));
3791 }
3792 } else if (left->is_single_fpu() || left->is_double_fpu()) {
3793 assert(left->fpu() == 0, "arg must be on TOS");
3794 assert(dest->fpu() == 0, "dest must be TOS");
3795 __ fchs();
3796
3797 } else {
3798 ShouldNotReachHere();
3799 }
3800 }
3801
3802
3803 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) {
3804 assert(addr->is_address() && dest->is_register(), "check");
3805 Register reg;
3806 reg = dest->as_pointer_register();
3807 __ lea(reg, as_Address(addr->as_address_ptr()));
3808 }
3809
3810
3811
3812 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) {
3813 assert(!tmp->is_valid(), "don't need temporary");
3814 __ call(RuntimeAddress(dest));
3815 if (info != NULL) {
3816 add_call_info_here(info);
3817 }
3818 }
3819
3820
3821 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) {
3822 assert(type == T_LONG, "only for volatile long fields");
3823
3824 if (info != NULL) {
3825 add_debug_info_for_null_check_here(info);
3826 }
3827
3828 if (src->is_double_xmm()) {
3829 if (dest->is_double_cpu()) {
3830 #ifdef _LP64
3831 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg());
3832 #else
3833 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg());
3834 __ psrlq(src->as_xmm_double_reg(), 32);
3835 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg());
3836 #endif // _LP64
3837 } else if (dest->is_double_stack()) {
3838 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg());
3839 } else if (dest->is_address()) {
3840 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg());
3841 } else {
3842 ShouldNotReachHere();
3843 }
3844
3845 } else if (dest->is_double_xmm()) {
3846 if (src->is_double_stack()) {
3847 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix()));
3848 } else if (src->is_address()) {
3849 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr()));
3850 } else {
3851 ShouldNotReachHere();
3852 }
3853
3854 } else if (src->is_double_fpu()) {
3855 assert(src->fpu_regnrLo() == 0, "must be TOS");
3856 if (dest->is_double_stack()) {
3857 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix()));
3858 } else if (dest->is_address()) {
3859 __ fistp_d(as_Address(dest->as_address_ptr()));
3860 } else {
3861 ShouldNotReachHere();
3862 }
3863
3864 } else if (dest->is_double_fpu()) {
3865 assert(dest->fpu_regnrLo() == 0, "must be TOS");
3866 if (src->is_double_stack()) {
3867 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix()));
3868 } else if (src->is_address()) {
3869 __ fild_d(as_Address(src->as_address_ptr()));
3870 } else {
3871 ShouldNotReachHere();
3872 }
3873 } else {
3874 ShouldNotReachHere();
3875 }
3876 }
3877
3878 #ifdef ASSERT
3879 // emit run-time assertion
3880 void LIR_Assembler::emit_assert(LIR_OpAssert* op) {
3881 assert(op->code() == lir_assert, "must be");
3882
3883 if (op->in_opr1()->is_valid()) {
3884 assert(op->in_opr2()->is_valid(), "both operands must be valid");
3885 comp_op(op->condition(), op->in_opr1(), op->in_opr2(), op);
3886 } else {
3887 assert(op->in_opr2()->is_illegal(), "both operands must be illegal");
3888 assert(op->condition() == lir_cond_always, "no other conditions allowed");
3889 }
3890
3891 Label ok;
3892 if (op->condition() != lir_cond_always) {
3893 Assembler::Condition acond = Assembler::zero;
3894 switch (op->condition()) {
3895 case lir_cond_equal: acond = Assembler::equal; break;
3896 case lir_cond_notEqual: acond = Assembler::notEqual; break;
3897 case lir_cond_less: acond = Assembler::less; break;
3898 case lir_cond_lessEqual: acond = Assembler::lessEqual; break;
3899 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break;
3900 case lir_cond_greater: acond = Assembler::greater; break;
3901 case lir_cond_belowEqual: acond = Assembler::belowEqual; break;
3902 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break;
3903 default: ShouldNotReachHere();
3904 }
3905 __ jcc(acond, ok);
3906 }
3907 if (op->halt()) {
3908 const char* str = __ code_string(op->msg());
3909 __ stop(str);
3910 } else {
3911 breakpoint();
3912 }
3913 __ bind(ok);
3914 }
3915 #endif
3916
3917 void LIR_Assembler::membar() {
3918 // QQQ sparc TSO uses this,
3919 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad));
3920 }
3921
3922 void LIR_Assembler::membar_acquire() {
3923 // No x86 machines currently require load fences
3924 }
3925
3926 void LIR_Assembler::membar_release() {
3927 // No x86 machines currently require store fences
3928 }
3929
3930 void LIR_Assembler::membar_loadload() {
3931 // no-op
3932 //__ membar(Assembler::Membar_mask_bits(Assembler::loadload));
3933 }
3934
3935 void LIR_Assembler::membar_storestore() {
3936 // no-op
3937 //__ membar(Assembler::Membar_mask_bits(Assembler::storestore));
3938 }
3939
3940 void LIR_Assembler::membar_loadstore() {
3941 // no-op
3942 //__ membar(Assembler::Membar_mask_bits(Assembler::loadstore));
3943 }
3944
3945 void LIR_Assembler::membar_storeload() {
3946 __ membar(Assembler::Membar_mask_bits(Assembler::StoreLoad));
3947 }
3948
3949 void LIR_Assembler::on_spin_wait() {
3950 __ pause ();
3951 }
3952
3953 void LIR_Assembler::get_thread(LIR_Opr result_reg) {
3954 assert(result_reg->is_register(), "check");
3955 #ifdef _LP64
3956 // __ get_thread(result_reg->as_register_lo());
3957 __ mov(result_reg->as_register(), r15_thread);
3958 #else
3959 __ get_thread(result_reg->as_register());
3960 #endif // _LP64
3961 }
3962
3963
3964 void LIR_Assembler::peephole(LIR_List*) {
3965 // do nothing for now
3966 }
3967
3968 void LIR_Assembler::atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp) {
3969 assert(data == dest, "xchg/xadd uses only 2 operands");
3970
3971 if (data->type() == T_INT) {
3972 if (code == lir_xadd) {
3973 if (os::is_MP()) {
3974 __ lock();
3975 }
3976 __ xaddl(as_Address(src->as_address_ptr()), data->as_register());
3977 } else {
3978 __ xchgl(data->as_register(), as_Address(src->as_address_ptr()));
3979 }
3980 } else if (data->is_oop()) {
3981 assert (code == lir_xchg, "xadd for oops");
3982 Register obj = data->as_register();
3983 #ifdef _LP64
3984 if (UseCompressedOops) {
3985 __ encode_heap_oop(obj);
3986 __ xchgl(obj, as_Address(src->as_address_ptr()));
3987 __ decode_heap_oop(obj);
3988 } else {
3989 __ xchgptr(obj, as_Address(src->as_address_ptr()));
3990 }
3991 #else
3992 __ xchgl(obj, as_Address(src->as_address_ptr()));
3993 #endif
3994 } else if (data->type() == T_LONG) {
3995 #ifdef _LP64
3996 assert(data->as_register_lo() == data->as_register_hi(), "should be a single register");
3997 if (code == lir_xadd) {
3998 if (os::is_MP()) {
3999 __ lock();
4000 }
4001 __ xaddq(as_Address(src->as_address_ptr()), data->as_register_lo());
4002 } else {
4003 __ xchgq(data->as_register_lo(), as_Address(src->as_address_ptr()));
4004 }
4005 #else
4006 ShouldNotReachHere();
4007 #endif
4008 } else {
4009 ShouldNotReachHere();
4010 }
4011 }
4012
4013 #undef __