Mercurial > hg > truffle
annotate src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 3210:27ae76ed33ca
Finish implementation of loop inversion
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Tue, 12 Jul 2011 13:10:33 +0200 |
parents | 15c9a0e16269 |
children | ccf072cdba91 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/assembler.hpp" |
1972 | 27 #include "c1/c1_Compilation.hpp" |
28 #include "c1/c1_LIRAssembler.hpp" | |
29 #include "c1/c1_MacroAssembler.hpp" | |
30 #include "c1/c1_Runtime1.hpp" | |
31 #include "c1/c1_ValueStack.hpp" | |
32 #include "ci/ciArrayKlass.hpp" | |
33 #include "ci/ciInstance.hpp" | |
34 #include "gc_interface/collectedHeap.hpp" | |
35 #include "memory/barrierSet.hpp" | |
36 #include "memory/cardTableModRefBS.hpp" | |
37 #include "nativeInst_x86.hpp" | |
38 #include "oops/objArrayKlass.hpp" | |
39 #include "runtime/sharedRuntime.hpp" | |
0 | 40 |
41 | |
42 // These masks are used to provide 128-bit aligned bitmasks to the XMM | |
43 // instructions, to allow sign-masking or sign-bit flipping. They allow | |
44 // fast versions of NegF/NegD and AbsF/AbsD. | |
45 | |
46 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
47 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
48 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
49 // of 128-bits operands for SSE instructions. | |
50 jlong *operand = (jlong*)(((long)adr)&((long)(~0xF))); | |
51 // Store the value to a 128-bits operand. | |
52 operand[0] = lo; | |
53 operand[1] = hi; | |
54 return operand; | |
55 } | |
56 | |
57 // Buffer for 128-bits masks used by SSE instructions. | |
58 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment) | |
59 | |
60 // Static initialization during VM startup. | |
61 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF)); | |
62 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF)); | |
63 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], CONST64(0x8000000080000000), CONST64(0x8000000080000000)); | |
64 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], CONST64(0x8000000000000000), CONST64(0x8000000000000000)); | |
65 | |
66 | |
67 | |
68 NEEDS_CLEANUP // remove this definitions ? | |
69 const Register IC_Klass = rax; // where the IC klass is cached | |
70 const Register SYNC_header = rax; // synchronization header | |
71 const Register SHIFT_count = rcx; // where count for shift operations must be | |
72 | |
73 #define __ _masm-> | |
74 | |
75 | |
76 static void select_different_registers(Register preserve, | |
77 Register extra, | |
78 Register &tmp1, | |
79 Register &tmp2) { | |
80 if (tmp1 == preserve) { | |
81 assert_different_registers(tmp1, tmp2, extra); | |
82 tmp1 = extra; | |
83 } else if (tmp2 == preserve) { | |
84 assert_different_registers(tmp1, tmp2, extra); | |
85 tmp2 = extra; | |
86 } | |
87 assert_different_registers(preserve, tmp1, tmp2); | |
88 } | |
89 | |
90 | |
91 | |
92 static void select_different_registers(Register preserve, | |
93 Register extra, | |
94 Register &tmp1, | |
95 Register &tmp2, | |
96 Register &tmp3) { | |
97 if (tmp1 == preserve) { | |
98 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
99 tmp1 = extra; | |
100 } else if (tmp2 == preserve) { | |
101 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
102 tmp2 = extra; | |
103 } else if (tmp3 == preserve) { | |
104 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
105 tmp3 = extra; | |
106 } | |
107 assert_different_registers(preserve, tmp1, tmp2, tmp3); | |
108 } | |
109 | |
110 | |
111 | |
112 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { | |
113 if (opr->is_constant()) { | |
114 LIR_Const* constant = opr->as_constant_ptr(); | |
115 switch (constant->type()) { | |
116 case T_INT: { | |
117 return true; | |
118 } | |
119 | |
120 default: | |
121 return false; | |
122 } | |
123 } | |
124 return false; | |
125 } | |
126 | |
127 | |
128 LIR_Opr LIR_Assembler::receiverOpr() { | |
304 | 129 return FrameMap::receiver_opr; |
0 | 130 } |
131 | |
132 LIR_Opr LIR_Assembler::incomingReceiverOpr() { | |
133 return receiverOpr(); | |
134 } | |
135 | |
136 LIR_Opr LIR_Assembler::osrBufferPointer() { | |
304 | 137 return FrameMap::as_pointer_opr(receiverOpr()->as_register()); |
0 | 138 } |
139 | |
140 //--------------fpu register translations----------------------- | |
141 | |
142 | |
143 address LIR_Assembler::float_constant(float f) { | |
144 address const_addr = __ float_constant(f); | |
145 if (const_addr == NULL) { | |
146 bailout("const section overflow"); | |
147 return __ code()->consts()->start(); | |
148 } else { | |
149 return const_addr; | |
150 } | |
151 } | |
152 | |
153 | |
154 address LIR_Assembler::double_constant(double d) { | |
155 address const_addr = __ double_constant(d); | |
156 if (const_addr == NULL) { | |
157 bailout("const section overflow"); | |
158 return __ code()->consts()->start(); | |
159 } else { | |
160 return const_addr; | |
161 } | |
162 } | |
163 | |
164 | |
165 void LIR_Assembler::set_24bit_FPU() { | |
166 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24())); | |
167 } | |
168 | |
169 void LIR_Assembler::reset_FPU() { | |
170 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
171 } | |
172 | |
173 void LIR_Assembler::fpop() { | |
174 __ fpop(); | |
175 } | |
176 | |
177 void LIR_Assembler::fxch(int i) { | |
178 __ fxch(i); | |
179 } | |
180 | |
181 void LIR_Assembler::fld(int i) { | |
182 __ fld_s(i); | |
183 } | |
184 | |
185 void LIR_Assembler::ffree(int i) { | |
186 __ ffree(i); | |
187 } | |
188 | |
189 void LIR_Assembler::breakpoint() { | |
190 __ int3(); | |
191 } | |
192 | |
193 void LIR_Assembler::push(LIR_Opr opr) { | |
194 if (opr->is_single_cpu()) { | |
195 __ push_reg(opr->as_register()); | |
196 } else if (opr->is_double_cpu()) { | |
304 | 197 NOT_LP64(__ push_reg(opr->as_register_hi())); |
0 | 198 __ push_reg(opr->as_register_lo()); |
199 } else if (opr->is_stack()) { | |
200 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix())); | |
201 } else if (opr->is_constant()) { | |
202 LIR_Const* const_opr = opr->as_constant_ptr(); | |
203 if (const_opr->type() == T_OBJECT) { | |
204 __ push_oop(const_opr->as_jobject()); | |
205 } else if (const_opr->type() == T_INT) { | |
206 __ push_jint(const_opr->as_jint()); | |
207 } else { | |
208 ShouldNotReachHere(); | |
209 } | |
210 | |
211 } else { | |
212 ShouldNotReachHere(); | |
213 } | |
214 } | |
215 | |
216 void LIR_Assembler::pop(LIR_Opr opr) { | |
217 if (opr->is_single_cpu()) { | |
304 | 218 __ pop_reg(opr->as_register()); |
0 | 219 } else { |
220 ShouldNotReachHere(); | |
221 } | |
222 } | |
223 | |
304 | 224 bool LIR_Assembler::is_literal_address(LIR_Address* addr) { |
225 return addr->base()->is_illegal() && addr->index()->is_illegal(); | |
226 } | |
227 | |
0 | 228 //------------------------------------------- |
304 | 229 |
0 | 230 Address LIR_Assembler::as_Address(LIR_Address* addr) { |
304 | 231 return as_Address(addr, rscratch1); |
232 } | |
233 | |
234 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) { | |
0 | 235 if (addr->base()->is_illegal()) { |
236 assert(addr->index()->is_illegal(), "must be illegal too"); | |
304 | 237 AddressLiteral laddr((address)addr->disp(), relocInfo::none); |
238 if (! __ reachable(laddr)) { | |
239 __ movptr(tmp, laddr.addr()); | |
240 Address res(tmp, 0); | |
241 return res; | |
242 } else { | |
243 return __ as_Address(laddr); | |
244 } | |
0 | 245 } |
246 | |
304 | 247 Register base = addr->base()->as_pointer_register(); |
0 | 248 |
249 if (addr->index()->is_illegal()) { | |
250 return Address( base, addr->disp()); | |
304 | 251 } else if (addr->index()->is_cpu_register()) { |
252 Register index = addr->index()->as_pointer_register(); | |
0 | 253 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp()); |
254 } else if (addr->index()->is_constant()) { | |
304 | 255 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp(); |
256 assert(Assembler::is_simm32(addr_offset), "must be"); | |
0 | 257 |
258 return Address(base, addr_offset); | |
259 } else { | |
260 Unimplemented(); | |
261 return Address(); | |
262 } | |
263 } | |
264 | |
265 | |
266 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { | |
267 Address base = as_Address(addr); | |
268 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord); | |
269 } | |
270 | |
271 | |
272 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { | |
273 return as_Address(addr); | |
274 } | |
275 | |
276 | |
277 void LIR_Assembler::osr_entry() { | |
278 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); | |
279 BlockBegin* osr_entry = compilation()->hir()->osr_entry(); | |
280 ValueStack* entry_state = osr_entry->state(); | |
281 int number_of_locks = entry_state->locks_size(); | |
282 | |
283 // we jump here if osr happens with the interpreter | |
284 // state set up to continue at the beginning of the | |
285 // loop that triggered osr - in particular, we have | |
286 // the following registers setup: | |
287 // | |
288 // rcx: osr buffer | |
289 // | |
290 | |
291 // build frame | |
292 ciMethod* m = compilation()->method(); | |
293 __ build_frame(initial_frame_size_in_bytes()); | |
294 | |
295 // OSR buffer is | |
296 // | |
297 // locals[nlocals-1..0] | |
298 // monitors[0..number_of_locks] | |
299 // | |
300 // locals is a direct copy of the interpreter frame so in the osr buffer | |
301 // so first slot in the local array is the last local from the interpreter | |
302 // and last slot is local[0] (receiver) from the interpreter | |
303 // | |
304 // Similarly with locks. The first lock slot in the osr buffer is the nth lock | |
305 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock | |
306 // in the interpreter frame (the method lock if a sync method) | |
307 | |
308 // Initialize monitors in the compiled activation. | |
309 // rcx: pointer to osr buffer | |
310 // | |
311 // All other registers are dead at this point and the locals will be | |
312 // copied into place by code emitted in the IR. | |
313 | |
304 | 314 Register OSR_buf = osrBufferPointer()->as_pointer_register(); |
0 | 315 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); |
316 int monitor_offset = BytesPerWord * method()->max_locals() + | |
1060 | 317 (2 * BytesPerWord) * (number_of_locks - 1); |
318 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in | |
319 // the OSR buffer using 2 word entries: first the lock and then | |
320 // the oop. | |
0 | 321 for (int i = 0; i < number_of_locks; i++) { |
1060 | 322 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); |
0 | 323 #ifdef ASSERT |
324 // verify the interpreter's monitor has a non-null object | |
325 { | |
326 Label L; | |
1060 | 327 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD); |
0 | 328 __ jcc(Assembler::notZero, L); |
329 __ stop("locked object is NULL"); | |
330 __ bind(L); | |
331 } | |
332 #endif | |
1060 | 333 __ movptr(rbx, Address(OSR_buf, slot_offset + 0)); |
304 | 334 __ movptr(frame_map()->address_for_monitor_lock(i), rbx); |
1060 | 335 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord)); |
304 | 336 __ movptr(frame_map()->address_for_monitor_object(i), rbx); |
0 | 337 } |
338 } | |
339 } | |
340 | |
341 | |
342 // inline cache check; done before the frame is built. | |
343 int LIR_Assembler::check_icache() { | |
344 Register receiver = FrameMap::receiver_opr->as_register(); | |
345 Register ic_klass = IC_Klass; | |
304 | 346 const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9); |
2002 | 347 const bool do_post_padding = VerifyOops || UseCompressedOops; |
348 if (!do_post_padding) { | |
0 | 349 // insert some nops so that the verified entry point is aligned on CodeEntryAlignment |
304 | 350 while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) { |
0 | 351 __ nop(); |
352 } | |
353 } | |
354 int offset = __ offset(); | |
355 __ inline_cache_check(receiver, IC_Klass); | |
2002 | 356 assert(__ offset() % CodeEntryAlignment == 0 || do_post_padding, "alignment must be correct"); |
357 if (do_post_padding) { | |
0 | 358 // force alignment after the cache check. |
359 // It's been verified to be aligned if !VerifyOops | |
360 __ align(CodeEntryAlignment); | |
361 } | |
362 return offset; | |
363 } | |
364 | |
365 | |
366 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) { | |
367 jobject o = NULL; | |
368 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id); | |
369 __ movoop(reg, o); | |
370 patching_epilog(patch, lir_patch_normal, reg, info); | |
371 } | |
372 | |
373 | |
374 void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register new_hdr, int monitor_no, Register exception) { | |
375 if (exception->is_valid()) { | |
376 // preserve exception | |
377 // note: the monitor_exit runtime call is a leaf routine | |
378 // and cannot block => no GC can happen | |
379 // The slow case (MonitorAccessStub) uses the first two stack slots | |
380 // ([esp+0] and [esp+4]), therefore we store the exception at [esp+8] | |
304 | 381 __ movptr (Address(rsp, 2*wordSize), exception); |
0 | 382 } |
383 | |
384 Register obj_reg = obj_opr->as_register(); | |
385 Register lock_reg = lock_opr->as_register(); | |
386 | |
387 // setup registers (lock_reg must be rax, for lock_object) | |
388 assert(obj_reg != SYNC_header && lock_reg != SYNC_header, "rax, must be available here"); | |
389 Register hdr = lock_reg; | |
390 assert(new_hdr == SYNC_header, "wrong register"); | |
391 lock_reg = new_hdr; | |
392 // compute pointer to BasicLock | |
393 Address lock_addr = frame_map()->address_for_monitor_lock(monitor_no); | |
304 | 394 __ lea(lock_reg, lock_addr); |
0 | 395 // unlock object |
396 MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, true, monitor_no); | |
397 // _slow_case_stubs->append(slow_case); | |
398 // temporary fix: must be created after exceptionhandler, therefore as call stub | |
399 _slow_case_stubs->append(slow_case); | |
400 if (UseFastLocking) { | |
401 // try inlined fast unlocking first, revert to slow locking if it fails | |
402 // note: lock_reg points to the displaced header since the displaced header offset is 0! | |
403 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
404 __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); | |
405 } else { | |
406 // always do slow unlocking | |
407 // note: the slow unlocking code could be inlined here, however if we use | |
408 // slow unlocking, speed doesn't matter anyway and this solution is | |
409 // simpler and requires less duplicated code - additionally, the | |
410 // slow unlocking code is the same in either case which simplifies | |
411 // debugging | |
412 __ jmp(*slow_case->entry()); | |
413 } | |
414 // done | |
415 __ bind(*slow_case->continuation()); | |
416 | |
417 if (exception->is_valid()) { | |
418 // restore exception | |
304 | 419 __ movptr (exception, Address(rsp, 2 * wordSize)); |
0 | 420 } |
421 } | |
422 | |
423 // This specifies the rsp decrement needed to build the frame | |
424 int LIR_Assembler::initial_frame_size_in_bytes() { | |
425 // if rounding, must let FrameMap know! | |
304 | 426 |
427 // The frame_map records size in slots (32bit word) | |
428 | |
429 // subtract two words to account for return address and link | |
430 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size; | |
0 | 431 } |
432 | |
433 | |
1204 | 434 int LIR_Assembler::emit_exception_handler() { |
0 | 435 // if the last instruction is a call (typically to do a throw which |
436 // is coming at the end after block reordering) the return address | |
437 // must still point into the code area in order to avoid assertion | |
438 // failures when searching for the corresponding bci => add a nop | |
439 // (was bug 5/14/1999 - gri) | |
440 __ nop(); | |
441 | |
442 // generate code for exception handler | |
443 address handler_base = __ start_a_stub(exception_handler_size); | |
444 if (handler_base == NULL) { | |
445 // not enough space left for the handler | |
446 bailout("exception handler overflow"); | |
1204 | 447 return -1; |
0 | 448 } |
1204 | 449 |
0 | 450 int offset = code_offset(); |
451 | |
1295 | 452 // the exception oop and pc are in rax, and rdx |
0 | 453 // no other registers need to be preserved, so invalidate them |
1295 | 454 __ invalidate_registers(false, true, true, false, true, true); |
0 | 455 |
456 // check that there is really an exception | |
457 __ verify_not_null_oop(rax); | |
458 | |
1295 | 459 // search an exception handler (rax: exception oop, rdx: throwing pc) |
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460 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id))); |
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461 __ should_not_reach_here(); |
0 | 462 assert(code_offset() - offset <= exception_handler_size, "overflow"); |
463 __ end_a_stub(); | |
1204 | 464 |
465 return offset; | |
0 | 466 } |
467 | |
1204 | 468 |
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469 // Emit the code to remove the frame from the stack in the exception |
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470 // unwind path. |
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471 int LIR_Assembler::emit_unwind_handler() { |
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472 #ifndef PRODUCT |
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473 if (CommentedAssembly) { |
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474 _masm->block_comment("Unwind handler"); |
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475 } |
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476 #endif |
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477 |
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478 int offset = code_offset(); |
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479 |
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480 // Fetch the exception from TLS and clear out exception related thread state |
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481 __ get_thread(rsi); |
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482 __ movptr(rax, Address(rsi, JavaThread::exception_oop_offset())); |
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483 __ movptr(Address(rsi, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD); |
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484 __ movptr(Address(rsi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD); |
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485 |
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486 __ bind(_unwind_handler_entry); |
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487 __ verify_not_null_oop(rax); |
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488 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
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489 __ mov(rsi, rax); // Preserve the exception |
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490 } |
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491 |
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492 // Preform needed unlocking |
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493 MonitorExitStub* stub = NULL; |
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494 if (method()->is_synchronized()) { |
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495 monitor_address(0, FrameMap::rax_opr); |
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496 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0); |
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497 __ unlock_object(rdi, rbx, rax, *stub->entry()); |
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498 __ bind(*stub->continuation()); |
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499 } |
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500 |
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501 if (compilation()->env()->dtrace_method_probes()) { |
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502 __ get_thread(rax); |
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503 __ movptr(Address(rsp, 0), rax); |
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504 __ movoop(Address(rsp, sizeof(void*)), method()->constant_encoding()); |
1378
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505 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit))); |
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506 } |
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507 |
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508 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
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509 __ mov(rax, rsi); // Restore the exception |
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510 } |
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511 |
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512 // remove the activation and dispatch to the unwind handler |
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513 __ remove_frame(initial_frame_size_in_bytes()); |
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514 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id))); |
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515 |
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516 // Emit the slow path assembly |
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517 if (stub != NULL) { |
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518 stub->emit_code(this); |
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519 } |
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520 |
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521 return offset; |
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522 } |
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523 |
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524 |
1204 | 525 int LIR_Assembler::emit_deopt_handler() { |
0 | 526 // if the last instruction is a call (typically to do a throw which |
527 // is coming at the end after block reordering) the return address | |
528 // must still point into the code area in order to avoid assertion | |
529 // failures when searching for the corresponding bci => add a nop | |
530 // (was bug 5/14/1999 - gri) | |
531 __ nop(); | |
532 | |
533 // generate code for exception handler | |
534 address handler_base = __ start_a_stub(deopt_handler_size); | |
535 if (handler_base == NULL) { | |
536 // not enough space left for the handler | |
537 bailout("deopt handler overflow"); | |
1204 | 538 return -1; |
0 | 539 } |
1204 | 540 |
0 | 541 int offset = code_offset(); |
542 InternalAddress here(__ pc()); | |
1295 | 543 |
0 | 544 __ pushptr(here.addr()); |
545 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack())); | |
1295 | 546 |
0 | 547 assert(code_offset() - offset <= deopt_handler_size, "overflow"); |
548 __ end_a_stub(); | |
549 | |
1204 | 550 return offset; |
0 | 551 } |
552 | |
553 | |
554 // This is the fast version of java.lang.String.compare; it has not | |
555 // OSR-entry and therefore, we generate a slow version for OSR's | |
556 void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) { | |
304 | 557 __ movptr (rbx, rcx); // receiver is in rcx |
558 __ movptr (rax, arg1->as_register()); | |
0 | 559 |
560 // Get addresses of first characters from both Strings | |
2002 | 561 __ load_heap_oop(rsi, Address(rax, java_lang_String::value_offset_in_bytes())); |
562 __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes())); | |
563 __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 564 |
565 | |
566 // rbx, may be NULL | |
567 add_debug_info_for_null_check_here(info); | |
2002 | 568 __ load_heap_oop(rdi, Address(rbx, java_lang_String::value_offset_in_bytes())); |
569 __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes())); | |
570 __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 571 |
572 // compute minimum length (in rax) and difference of lengths (on top of stack) | |
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573 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); |
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574 __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes())); |
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575 __ mov (rcx, rbx); |
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576 __ subptr(rbx, rax); // subtract lengths |
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577 __ push (rbx); // result |
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578 __ cmov (Assembler::lessEqual, rax, rcx); |
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579 |
0 | 580 // is minimum length 0? |
581 Label noLoop, haveResult; | |
304 | 582 __ testptr (rax, rax); |
0 | 583 __ jcc (Assembler::zero, noLoop); |
584 | |
585 // compare first characters | |
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586 __ load_unsigned_short(rcx, Address(rdi, 0)); |
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587 __ load_unsigned_short(rbx, Address(rsi, 0)); |
0 | 588 __ subl(rcx, rbx); |
589 __ jcc(Assembler::notZero, haveResult); | |
590 // starting loop | |
591 __ decrement(rax); // we already tested index: skip one | |
592 __ jcc(Assembler::zero, noLoop); | |
593 | |
594 // set rsi.edi to the end of the arrays (arrays have same length) | |
595 // negate the index | |
596 | |
304 | 597 __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR))); |
598 __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR))); | |
599 __ negptr(rax); | |
0 | 600 |
601 // compare the strings in a loop | |
602 | |
603 Label loop; | |
604 __ align(wordSize); | |
605 __ bind(loop); | |
622
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606 __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0)); |
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607 __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0)); |
0 | 608 __ subl(rcx, rbx); |
609 __ jcc(Assembler::notZero, haveResult); | |
610 __ increment(rax); | |
611 __ jcc(Assembler::notZero, loop); | |
612 | |
613 // strings are equal up to min length | |
614 | |
615 __ bind(noLoop); | |
304 | 616 __ pop(rax); |
0 | 617 return_op(LIR_OprFact::illegalOpr); |
618 | |
619 __ bind(haveResult); | |
620 // leave instruction is going to discard the TOS value | |
304 | 621 __ mov (rax, rcx); // result of call is in rax, |
0 | 622 } |
623 | |
624 | |
625 void LIR_Assembler::return_op(LIR_Opr result) { | |
626 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,"); | |
627 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) { | |
628 assert(result->fpu() == 0, "result must already be on TOS"); | |
629 } | |
630 | |
631 // Pop the stack before the safepoint code | |
1295 | 632 __ remove_frame(initial_frame_size_in_bytes()); |
0 | 633 |
634 bool result_is_oop = result->is_valid() ? result->is_oop() : false; | |
635 | |
636 // Note: we do not need to round double result; float result has the right precision | |
637 // the poll sets the condition code, but no data registers | |
638 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
639 relocInfo::poll_return_type); | |
304 | 640 |
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641 if (Assembler::is_polling_page_far()) { |
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642 __ lea(rscratch1, polling_page); |
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643 __ relocate(relocInfo::poll_return_type); |
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644 __ testl(rax, Address(rscratch1, 0)); |
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645 } else { |
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646 __ testl(rax, polling_page); |
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647 } |
0 | 648 __ ret(0); |
649 } | |
650 | |
651 | |
652 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { | |
653 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
654 relocInfo::poll_type); | |
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655 guarantee(info != NULL, "Shouldn't be NULL"); |
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656 int offset = __ offset(); |
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657 if (Assembler::is_polling_page_far()) { |
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658 __ lea(rscratch1, polling_page); |
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659 offset = __ offset(); |
0 | 660 add_debug_info_for_branch(info); |
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661 __ testl(rax, Address(rscratch1, 0)); |
0 | 662 } else { |
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663 add_debug_info_for_branch(info); |
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664 __ testl(rax, polling_page); |
0 | 665 } |
666 return offset; | |
667 } | |
668 | |
669 | |
670 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) { | |
304 | 671 if (from_reg != to_reg) __ mov(to_reg, from_reg); |
0 | 672 } |
673 | |
674 void LIR_Assembler::swap_reg(Register a, Register b) { | |
304 | 675 __ xchgptr(a, b); |
0 | 676 } |
677 | |
678 | |
679 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { | |
680 assert(src->is_constant(), "should not call otherwise"); | |
681 assert(dest->is_register(), "should not call otherwise"); | |
682 LIR_Const* c = src->as_constant_ptr(); | |
683 | |
684 switch (c->type()) { | |
2002 | 685 case T_INT: { |
686 assert(patch_code == lir_patch_none, "no patching handled here"); | |
687 __ movl(dest->as_register(), c->as_jint()); | |
688 break; | |
689 } | |
690 | |
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691 case T_ADDRESS: { |
0 | 692 assert(patch_code == lir_patch_none, "no patching handled here"); |
2002 | 693 __ movptr(dest->as_register(), c->as_jint()); |
0 | 694 break; |
695 } | |
696 | |
697 case T_LONG: { | |
698 assert(patch_code == lir_patch_none, "no patching handled here"); | |
304 | 699 #ifdef _LP64 |
700 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong()); | |
701 #else | |
702 __ movptr(dest->as_register_lo(), c->as_jint_lo()); | |
703 __ movptr(dest->as_register_hi(), c->as_jint_hi()); | |
704 #endif // _LP64 | |
0 | 705 break; |
706 } | |
707 | |
708 case T_OBJECT: { | |
709 if (patch_code != lir_patch_none) { | |
710 jobject2reg_with_patching(dest->as_register(), info); | |
711 } else { | |
712 __ movoop(dest->as_register(), c->as_jobject()); | |
713 } | |
714 break; | |
715 } | |
716 | |
717 case T_FLOAT: { | |
718 if (dest->is_single_xmm()) { | |
719 if (c->is_zero_float()) { | |
720 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg()); | |
721 } else { | |
722 __ movflt(dest->as_xmm_float_reg(), | |
723 InternalAddress(float_constant(c->as_jfloat()))); | |
724 } | |
725 } else { | |
726 assert(dest->is_single_fpu(), "must be"); | |
727 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
728 if (c->is_zero_float()) { | |
729 __ fldz(); | |
730 } else if (c->is_one_float()) { | |
731 __ fld1(); | |
732 } else { | |
733 __ fld_s (InternalAddress(float_constant(c->as_jfloat()))); | |
734 } | |
735 } | |
736 break; | |
737 } | |
738 | |
739 case T_DOUBLE: { | |
740 if (dest->is_double_xmm()) { | |
741 if (c->is_zero_double()) { | |
742 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg()); | |
743 } else { | |
744 __ movdbl(dest->as_xmm_double_reg(), | |
745 InternalAddress(double_constant(c->as_jdouble()))); | |
746 } | |
747 } else { | |
748 assert(dest->is_double_fpu(), "must be"); | |
749 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
750 if (c->is_zero_double()) { | |
751 __ fldz(); | |
752 } else if (c->is_one_double()) { | |
753 __ fld1(); | |
754 } else { | |
755 __ fld_d (InternalAddress(double_constant(c->as_jdouble()))); | |
756 } | |
757 } | |
758 break; | |
759 } | |
760 | |
761 default: | |
762 ShouldNotReachHere(); | |
763 } | |
764 } | |
765 | |
766 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { | |
767 assert(src->is_constant(), "should not call otherwise"); | |
768 assert(dest->is_stack(), "should not call otherwise"); | |
769 LIR_Const* c = src->as_constant_ptr(); | |
770 | |
771 switch (c->type()) { | |
772 case T_INT: // fall through | |
773 case T_FLOAT: | |
2002 | 774 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); |
775 break; | |
776 | |
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777 case T_ADDRESS: |
2002 | 778 __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); |
0 | 779 break; |
780 | |
781 case T_OBJECT: | |
782 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject()); | |
783 break; | |
784 | |
785 case T_LONG: // fall through | |
786 case T_DOUBLE: | |
304 | 787 #ifdef _LP64 |
788 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
789 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits()); | |
790 #else | |
791 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
792 lo_word_offset_in_bytes), c->as_jint_lo_bits()); | |
793 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
794 hi_word_offset_in_bytes), c->as_jint_hi_bits()); | |
795 #endif // _LP64 | |
0 | 796 break; |
797 | |
798 default: | |
799 ShouldNotReachHere(); | |
800 } | |
801 } | |
802 | |
2002 | 803 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) { |
0 | 804 assert(src->is_constant(), "should not call otherwise"); |
805 assert(dest->is_address(), "should not call otherwise"); | |
806 LIR_Const* c = src->as_constant_ptr(); | |
807 LIR_Address* addr = dest->as_address_ptr(); | |
808 | |
304 | 809 int null_check_here = code_offset(); |
0 | 810 switch (type) { |
811 case T_INT: // fall through | |
812 case T_FLOAT: | |
2002 | 813 __ movl(as_Address(addr), c->as_jint_bits()); |
814 break; | |
815 | |
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816 case T_ADDRESS: |
2002 | 817 __ movptr(as_Address(addr), c->as_jint_bits()); |
0 | 818 break; |
819 | |
820 case T_OBJECT: // fall through | |
821 case T_ARRAY: | |
822 if (c->as_jobject() == NULL) { | |
2002 | 823 if (UseCompressedOops && !wide) { |
824 __ movl(as_Address(addr), (int32_t)NULL_WORD); | |
825 } else { | |
826 __ movptr(as_Address(addr), NULL_WORD); | |
827 } | |
0 | 828 } else { |
304 | 829 if (is_literal_address(addr)) { |
830 ShouldNotReachHere(); | |
831 __ movoop(as_Address(addr, noreg), c->as_jobject()); | |
832 } else { | |
1060 | 833 #ifdef _LP64 |
834 __ movoop(rscratch1, c->as_jobject()); | |
2002 | 835 if (UseCompressedOops && !wide) { |
836 __ encode_heap_oop(rscratch1); | |
837 null_check_here = code_offset(); | |
838 __ movl(as_Address_lo(addr), rscratch1); | |
839 } else { | |
840 null_check_here = code_offset(); | |
841 __ movptr(as_Address_lo(addr), rscratch1); | |
842 } | |
1060 | 843 #else |
304 | 844 __ movoop(as_Address(addr), c->as_jobject()); |
1060 | 845 #endif |
304 | 846 } |
0 | 847 } |
848 break; | |
849 | |
850 case T_LONG: // fall through | |
851 case T_DOUBLE: | |
304 | 852 #ifdef _LP64 |
853 if (is_literal_address(addr)) { | |
854 ShouldNotReachHere(); | |
855 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits()); | |
856 } else { | |
857 __ movptr(r10, (intptr_t)c->as_jlong_bits()); | |
858 null_check_here = code_offset(); | |
859 __ movptr(as_Address_lo(addr), r10); | |
860 } | |
861 #else | |
862 // Always reachable in 32bit so this doesn't produce useless move literal | |
863 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits()); | |
864 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits()); | |
865 #endif // _LP64 | |
0 | 866 break; |
867 | |
868 case T_BOOLEAN: // fall through | |
869 case T_BYTE: | |
870 __ movb(as_Address(addr), c->as_jint() & 0xFF); | |
871 break; | |
872 | |
873 case T_CHAR: // fall through | |
874 case T_SHORT: | |
875 __ movw(as_Address(addr), c->as_jint() & 0xFFFF); | |
876 break; | |
877 | |
878 default: | |
879 ShouldNotReachHere(); | |
880 }; | |
304 | 881 |
882 if (info != NULL) { | |
883 add_debug_info_for_null_check(null_check_here, info); | |
884 } | |
0 | 885 } |
886 | |
887 | |
888 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) { | |
889 assert(src->is_register(), "should not call otherwise"); | |
890 assert(dest->is_register(), "should not call otherwise"); | |
891 | |
892 // move between cpu-registers | |
893 if (dest->is_single_cpu()) { | |
304 | 894 #ifdef _LP64 |
895 if (src->type() == T_LONG) { | |
896 // Can do LONG -> OBJECT | |
897 move_regs(src->as_register_lo(), dest->as_register()); | |
898 return; | |
899 } | |
900 #endif | |
0 | 901 assert(src->is_single_cpu(), "must match"); |
902 if (src->type() == T_OBJECT) { | |
903 __ verify_oop(src->as_register()); | |
904 } | |
905 move_regs(src->as_register(), dest->as_register()); | |
906 | |
907 } else if (dest->is_double_cpu()) { | |
304 | 908 #ifdef _LP64 |
909 if (src->type() == T_OBJECT || src->type() == T_ARRAY) { | |
910 // Surprising to me but we can see move of a long to t_object | |
911 __ verify_oop(src->as_register()); | |
912 move_regs(src->as_register(), dest->as_register_lo()); | |
913 return; | |
914 } | |
915 #endif | |
0 | 916 assert(src->is_double_cpu(), "must match"); |
917 Register f_lo = src->as_register_lo(); | |
918 Register f_hi = src->as_register_hi(); | |
919 Register t_lo = dest->as_register_lo(); | |
920 Register t_hi = dest->as_register_hi(); | |
304 | 921 #ifdef _LP64 |
922 assert(f_hi == f_lo, "must be same"); | |
923 assert(t_hi == t_lo, "must be same"); | |
924 move_regs(f_lo, t_lo); | |
925 #else | |
0 | 926 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation"); |
927 | |
304 | 928 |
0 | 929 if (f_lo == t_hi && f_hi == t_lo) { |
930 swap_reg(f_lo, f_hi); | |
931 } else if (f_hi == t_lo) { | |
932 assert(f_lo != t_hi, "overwriting register"); | |
933 move_regs(f_hi, t_hi); | |
934 move_regs(f_lo, t_lo); | |
935 } else { | |
936 assert(f_hi != t_lo, "overwriting register"); | |
937 move_regs(f_lo, t_lo); | |
938 move_regs(f_hi, t_hi); | |
939 } | |
304 | 940 #endif // LP64 |
0 | 941 |
942 // special moves from fpu-register to xmm-register | |
943 // necessary for method results | |
944 } else if (src->is_single_xmm() && !dest->is_single_xmm()) { | |
945 __ movflt(Address(rsp, 0), src->as_xmm_float_reg()); | |
946 __ fld_s(Address(rsp, 0)); | |
947 } else if (src->is_double_xmm() && !dest->is_double_xmm()) { | |
948 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg()); | |
949 __ fld_d(Address(rsp, 0)); | |
950 } else if (dest->is_single_xmm() && !src->is_single_xmm()) { | |
951 __ fstp_s(Address(rsp, 0)); | |
952 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0)); | |
953 } else if (dest->is_double_xmm() && !src->is_double_xmm()) { | |
954 __ fstp_d(Address(rsp, 0)); | |
955 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0)); | |
956 | |
957 // move between xmm-registers | |
958 } else if (dest->is_single_xmm()) { | |
959 assert(src->is_single_xmm(), "must match"); | |
960 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg()); | |
961 } else if (dest->is_double_xmm()) { | |
962 assert(src->is_double_xmm(), "must match"); | |
963 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg()); | |
964 | |
965 // move between fpu-registers (no instruction necessary because of fpu-stack) | |
966 } else if (dest->is_single_fpu() || dest->is_double_fpu()) { | |
967 assert(src->is_single_fpu() || src->is_double_fpu(), "must match"); | |
968 assert(src->fpu() == dest->fpu(), "currently should be nothing to do"); | |
969 } else { | |
970 ShouldNotReachHere(); | |
971 } | |
972 } | |
973 | |
974 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { | |
975 assert(src->is_register(), "should not call otherwise"); | |
976 assert(dest->is_stack(), "should not call otherwise"); | |
977 | |
978 if (src->is_single_cpu()) { | |
979 Address dst = frame_map()->address_for_slot(dest->single_stack_ix()); | |
980 if (type == T_OBJECT || type == T_ARRAY) { | |
981 __ verify_oop(src->as_register()); | |
304 | 982 __ movptr (dst, src->as_register()); |
983 } else { | |
984 __ movl (dst, src->as_register()); | |
0 | 985 } |
986 | |
987 } else if (src->is_double_cpu()) { | |
988 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes); | |
989 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 990 __ movptr (dstLO, src->as_register_lo()); |
991 NOT_LP64(__ movptr (dstHI, src->as_register_hi())); | |
0 | 992 |
993 } else if (src->is_single_xmm()) { | |
994 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
995 __ movflt(dst_addr, src->as_xmm_float_reg()); | |
996 | |
997 } else if (src->is_double_xmm()) { | |
998 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
999 __ movdbl(dst_addr, src->as_xmm_double_reg()); | |
1000 | |
1001 } else if (src->is_single_fpu()) { | |
1002 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
1003 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
1004 if (pop_fpu_stack) __ fstp_s (dst_addr); | |
1005 else __ fst_s (dst_addr); | |
1006 | |
1007 } else if (src->is_double_fpu()) { | |
1008 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
1009 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
1010 if (pop_fpu_stack) __ fstp_d (dst_addr); | |
1011 else __ fst_d (dst_addr); | |
1012 | |
1013 } else { | |
1014 ShouldNotReachHere(); | |
1015 } | |
1016 } | |
1017 | |
1018 | |
2002 | 1019 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 */) { |
0 | 1020 LIR_Address* to_addr = dest->as_address_ptr(); |
1021 PatchingStub* patch = NULL; | |
2002 | 1022 Register compressed_src = rscratch1; |
0 | 1023 |
1024 if (type == T_ARRAY || type == T_OBJECT) { | |
1025 __ verify_oop(src->as_register()); | |
2002 | 1026 #ifdef _LP64 |
1027 if (UseCompressedOops && !wide) { | |
1028 __ movptr(compressed_src, src->as_register()); | |
1029 __ encode_heap_oop(compressed_src); | |
1030 } | |
1031 #endif | |
0 | 1032 } |
2002 | 1033 |
0 | 1034 if (patch_code != lir_patch_none) { |
1035 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 1036 Address toa = as_Address(to_addr); |
1037 assert(toa.disp() != 0, "must have"); | |
0 | 1038 } |
2002 | 1039 |
1040 int null_check_here = code_offset(); | |
0 | 1041 switch (type) { |
1042 case T_FLOAT: { | |
1043 if (src->is_single_xmm()) { | |
1044 __ movflt(as_Address(to_addr), src->as_xmm_float_reg()); | |
1045 } else { | |
1046 assert(src->is_single_fpu(), "must be"); | |
1047 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
1048 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr)); | |
1049 else __ fst_s (as_Address(to_addr)); | |
1050 } | |
1051 break; | |
1052 } | |
1053 | |
1054 case T_DOUBLE: { | |
1055 if (src->is_double_xmm()) { | |
1056 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg()); | |
1057 } else { | |
1058 assert(src->is_double_fpu(), "must be"); | |
1059 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
1060 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr)); | |
1061 else __ fst_d (as_Address(to_addr)); | |
1062 } | |
1063 break; | |
1064 } | |
1065 | |
1066 case T_ARRAY: // fall through | |
1067 case T_OBJECT: // fall through | |
2002 | 1068 if (UseCompressedOops && !wide) { |
1069 __ movl(as_Address(to_addr), compressed_src); | |
1070 } else { | |
1071 __ movptr(as_Address(to_addr), src->as_register()); | |
1072 } | |
1073 break; | |
1074 case T_ADDRESS: | |
304 | 1075 __ movptr(as_Address(to_addr), src->as_register()); |
1076 break; | |
0 | 1077 case T_INT: |
1078 __ movl(as_Address(to_addr), src->as_register()); | |
1079 break; | |
1080 | |
1081 case T_LONG: { | |
1082 Register from_lo = src->as_register_lo(); | |
1083 Register from_hi = src->as_register_hi(); | |
304 | 1084 #ifdef _LP64 |
1085 __ movptr(as_Address_lo(to_addr), from_lo); | |
1086 #else | |
0 | 1087 Register base = to_addr->base()->as_register(); |
1088 Register index = noreg; | |
1089 if (to_addr->index()->is_register()) { | |
1090 index = to_addr->index()->as_register(); | |
1091 } | |
1092 if (base == from_lo || index == from_lo) { | |
1093 assert(base != from_hi, "can't be"); | |
1094 assert(index == noreg || (index != base && index != from_hi), "can't handle this"); | |
1095 __ movl(as_Address_hi(to_addr), from_hi); | |
1096 if (patch != NULL) { | |
1097 patching_epilog(patch, lir_patch_high, base, info); | |
1098 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1099 patch_code = lir_patch_low; | |
1100 } | |
1101 __ movl(as_Address_lo(to_addr), from_lo); | |
1102 } else { | |
1103 assert(index == noreg || (index != base && index != from_lo), "can't handle this"); | |
1104 __ movl(as_Address_lo(to_addr), from_lo); | |
1105 if (patch != NULL) { | |
1106 patching_epilog(patch, lir_patch_low, base, info); | |
1107 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1108 patch_code = lir_patch_high; | |
1109 } | |
1110 __ movl(as_Address_hi(to_addr), from_hi); | |
1111 } | |
304 | 1112 #endif // _LP64 |
0 | 1113 break; |
1114 } | |
1115 | |
1116 case T_BYTE: // fall through | |
1117 case T_BOOLEAN: { | |
1118 Register src_reg = src->as_register(); | |
1119 Address dst_addr = as_Address(to_addr); | |
1120 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6"); | |
1121 __ movb(dst_addr, src_reg); | |
1122 break; | |
1123 } | |
1124 | |
1125 case T_CHAR: // fall through | |
1126 case T_SHORT: | |
1127 __ movw(as_Address(to_addr), src->as_register()); | |
1128 break; | |
1129 | |
1130 default: | |
1131 ShouldNotReachHere(); | |
1132 } | |
2002 | 1133 if (info != NULL) { |
1134 add_debug_info_for_null_check(null_check_here, info); | |
1135 } | |
0 | 1136 |
1137 if (patch_code != lir_patch_none) { | |
1138 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info); | |
1139 } | |
1140 } | |
1141 | |
1142 | |
1143 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1144 assert(src->is_stack(), "should not call otherwise"); | |
1145 assert(dest->is_register(), "should not call otherwise"); | |
1146 | |
1147 if (dest->is_single_cpu()) { | |
1148 if (type == T_ARRAY || type == T_OBJECT) { | |
304 | 1149 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); |
0 | 1150 __ verify_oop(dest->as_register()); |
304 | 1151 } else { |
1152 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); | |
0 | 1153 } |
1154 | |
1155 } else if (dest->is_double_cpu()) { | |
1156 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes); | |
1157 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 1158 __ movptr(dest->as_register_lo(), src_addr_LO); |
1159 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI)); | |
0 | 1160 |
1161 } else if (dest->is_single_xmm()) { | |
1162 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1163 __ movflt(dest->as_xmm_float_reg(), src_addr); | |
1164 | |
1165 } else if (dest->is_double_xmm()) { | |
1166 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1167 __ movdbl(dest->as_xmm_double_reg(), src_addr); | |
1168 | |
1169 } else if (dest->is_single_fpu()) { | |
1170 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1171 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1172 __ fld_s(src_addr); | |
1173 | |
1174 } else if (dest->is_double_fpu()) { | |
1175 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1176 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1177 __ fld_d(src_addr); | |
1178 | |
1179 } else { | |
1180 ShouldNotReachHere(); | |
1181 } | |
1182 } | |
1183 | |
1184 | |
1185 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1186 if (src->is_single_stack()) { | |
304 | 1187 if (type == T_OBJECT || type == T_ARRAY) { |
1188 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix())); | |
1189 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1190 } else { | |
1060 | 1191 #ifndef _LP64 |
304 | 1192 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix())); |
1193 __ popl (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1060 | 1194 #else |
1195 //no pushl on 64bits | |
1196 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix())); | |
1197 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1); | |
1198 #endif | |
304 | 1199 } |
0 | 1200 |
1201 } else if (src->is_double_stack()) { | |
304 | 1202 #ifdef _LP64 |
1203 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix())); | |
1204 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix())); | |
1205 #else | |
0 | 1206 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0)); |
304 | 1207 // push and pop the part at src + wordSize, adding wordSize for the previous push |
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1208 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize)); |
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1209 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize)); |
0 | 1210 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0)); |
304 | 1211 #endif // _LP64 |
0 | 1212 |
1213 } else { | |
1214 ShouldNotReachHere(); | |
1215 } | |
1216 } | |
1217 | |
1218 | |
2002 | 1219 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) { |
0 | 1220 assert(src->is_address(), "should not call otherwise"); |
1221 assert(dest->is_register(), "should not call otherwise"); | |
1222 | |
1223 LIR_Address* addr = src->as_address_ptr(); | |
1224 Address from_addr = as_Address(addr); | |
1225 | |
1226 switch (type) { | |
1227 case T_BOOLEAN: // fall through | |
1228 case T_BYTE: // fall through | |
1229 case T_CHAR: // fall through | |
1230 case T_SHORT: | |
1231 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) { | |
1232 // on pre P6 processors we may get partial register stalls | |
1233 // so blow away the value of to_rinfo before loading a | |
1234 // partial word into it. Do it here so that it precedes | |
1235 // the potential patch point below. | |
304 | 1236 __ xorptr(dest->as_register(), dest->as_register()); |
0 | 1237 } |
1238 break; | |
1239 } | |
1240 | |
1241 PatchingStub* patch = NULL; | |
1242 if (patch_code != lir_patch_none) { | |
1243 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 1244 assert(from_addr.disp() != 0, "must have"); |
0 | 1245 } |
1246 if (info != NULL) { | |
1247 add_debug_info_for_null_check_here(info); | |
1248 } | |
1249 | |
1250 switch (type) { | |
1251 case T_FLOAT: { | |
1252 if (dest->is_single_xmm()) { | |
1253 __ movflt(dest->as_xmm_float_reg(), from_addr); | |
1254 } else { | |
1255 assert(dest->is_single_fpu(), "must be"); | |
1256 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1257 __ fld_s(from_addr); | |
1258 } | |
1259 break; | |
1260 } | |
1261 | |
1262 case T_DOUBLE: { | |
1263 if (dest->is_double_xmm()) { | |
1264 __ movdbl(dest->as_xmm_double_reg(), from_addr); | |
1265 } else { | |
1266 assert(dest->is_double_fpu(), "must be"); | |
1267 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1268 __ fld_d(from_addr); | |
1269 } | |
1270 break; | |
1271 } | |
1272 | |
1273 case T_OBJECT: // fall through | |
1274 case T_ARRAY: // fall through | |
2002 | 1275 if (UseCompressedOops && !wide) { |
1276 __ movl(dest->as_register(), from_addr); | |
1277 } else { | |
1278 __ movptr(dest->as_register(), from_addr); | |
1279 } | |
1280 break; | |
1281 | |
1282 case T_ADDRESS: | |
304 | 1283 __ movptr(dest->as_register(), from_addr); |
1284 break; | |
0 | 1285 case T_INT: |
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1286 __ movl(dest->as_register(), from_addr); |
0 | 1287 break; |
1288 | |
1289 case T_LONG: { | |
1290 Register to_lo = dest->as_register_lo(); | |
1291 Register to_hi = dest->as_register_hi(); | |
304 | 1292 #ifdef _LP64 |
1293 __ movptr(to_lo, as_Address_lo(addr)); | |
1294 #else | |
0 | 1295 Register base = addr->base()->as_register(); |
1296 Register index = noreg; | |
1297 if (addr->index()->is_register()) { | |
1298 index = addr->index()->as_register(); | |
1299 } | |
1300 if ((base == to_lo && index == to_hi) || | |
1301 (base == to_hi && index == to_lo)) { | |
1302 // addresses with 2 registers are only formed as a result of | |
1303 // array access so this code will never have to deal with | |
1304 // patches or null checks. | |
1305 assert(info == NULL && patch == NULL, "must be"); | |
304 | 1306 __ lea(to_hi, as_Address(addr)); |
0 | 1307 __ movl(to_lo, Address(to_hi, 0)); |
1308 __ movl(to_hi, Address(to_hi, BytesPerWord)); | |
1309 } else if (base == to_lo || index == to_lo) { | |
1310 assert(base != to_hi, "can't be"); | |
1311 assert(index == noreg || (index != base && index != to_hi), "can't handle this"); | |
1312 __ movl(to_hi, as_Address_hi(addr)); | |
1313 if (patch != NULL) { | |
1314 patching_epilog(patch, lir_patch_high, base, info); | |
1315 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1316 patch_code = lir_patch_low; | |
1317 } | |
1318 __ movl(to_lo, as_Address_lo(addr)); | |
1319 } else { | |
1320 assert(index == noreg || (index != base && index != to_lo), "can't handle this"); | |
1321 __ movl(to_lo, as_Address_lo(addr)); | |
1322 if (patch != NULL) { | |
1323 patching_epilog(patch, lir_patch_low, base, info); | |
1324 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1325 patch_code = lir_patch_high; | |
1326 } | |
1327 __ movl(to_hi, as_Address_hi(addr)); | |
1328 } | |
304 | 1329 #endif // _LP64 |
0 | 1330 break; |
1331 } | |
1332 | |
1333 case T_BOOLEAN: // fall through | |
1334 case T_BYTE: { | |
1335 Register dest_reg = dest->as_register(); | |
1336 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1337 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1338 __ movsbl(dest_reg, from_addr); |
0 | 1339 } else { |
1340 __ movb(dest_reg, from_addr); | |
1341 __ shll(dest_reg, 24); | |
1342 __ sarl(dest_reg, 24); | |
1343 } | |
1344 break; | |
1345 } | |
1346 | |
1347 case T_CHAR: { | |
1348 Register dest_reg = dest->as_register(); | |
1349 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1350 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1351 __ movzwl(dest_reg, from_addr); |
0 | 1352 } else { |
1353 __ movw(dest_reg, from_addr); | |
1354 } | |
1355 break; | |
1356 } | |
1357 | |
1358 case T_SHORT: { | |
1359 Register dest_reg = dest->as_register(); | |
1360 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1361 __ movswl(dest_reg, from_addr); |
0 | 1362 } else { |
1363 __ movw(dest_reg, from_addr); | |
1364 __ shll(dest_reg, 16); | |
1365 __ sarl(dest_reg, 16); | |
1366 } | |
1367 break; | |
1368 } | |
1369 | |
1370 default: | |
1371 ShouldNotReachHere(); | |
1372 } | |
1373 | |
1374 if (patch != NULL) { | |
1375 patching_epilog(patch, patch_code, addr->base()->as_register(), info); | |
1376 } | |
1377 | |
1378 if (type == T_ARRAY || type == T_OBJECT) { | |
2002 | 1379 #ifdef _LP64 |
1380 if (UseCompressedOops && !wide) { | |
1381 __ decode_heap_oop(dest->as_register()); | |
1382 } | |
1383 #endif | |
0 | 1384 __ verify_oop(dest->as_register()); |
1385 } | |
1386 } | |
1387 | |
1388 | |
1389 void LIR_Assembler::prefetchr(LIR_Opr src) { | |
1390 LIR_Address* addr = src->as_address_ptr(); | |
1391 Address from_addr = as_Address(addr); | |
1392 | |
1393 if (VM_Version::supports_sse()) { | |
1394 switch (ReadPrefetchInstr) { | |
1395 case 0: | |
1396 __ prefetchnta(from_addr); break; | |
1397 case 1: | |
1398 __ prefetcht0(from_addr); break; | |
1399 case 2: | |
1400 __ prefetcht2(from_addr); break; | |
1401 default: | |
1402 ShouldNotReachHere(); break; | |
1403 } | |
2479 | 1404 } else if (VM_Version::supports_3dnow_prefetch()) { |
0 | 1405 __ prefetchr(from_addr); |
1406 } | |
1407 } | |
1408 | |
1409 | |
1410 void LIR_Assembler::prefetchw(LIR_Opr src) { | |
1411 LIR_Address* addr = src->as_address_ptr(); | |
1412 Address from_addr = as_Address(addr); | |
1413 | |
1414 if (VM_Version::supports_sse()) { | |
1415 switch (AllocatePrefetchInstr) { | |
1416 case 0: | |
1417 __ prefetchnta(from_addr); break; | |
1418 case 1: | |
1419 __ prefetcht0(from_addr); break; | |
1420 case 2: | |
1421 __ prefetcht2(from_addr); break; | |
1422 case 3: | |
1423 __ prefetchw(from_addr); break; | |
1424 default: | |
1425 ShouldNotReachHere(); break; | |
1426 } | |
2479 | 1427 } else if (VM_Version::supports_3dnow_prefetch()) { |
0 | 1428 __ prefetchw(from_addr); |
1429 } | |
1430 } | |
1431 | |
1432 | |
1433 NEEDS_CLEANUP; // This could be static? | |
1434 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const { | |
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1435 int elem_size = type2aelembytes(type); |
0 | 1436 switch (elem_size) { |
1437 case 1: return Address::times_1; | |
1438 case 2: return Address::times_2; | |
1439 case 4: return Address::times_4; | |
1440 case 8: return Address::times_8; | |
1441 } | |
1442 ShouldNotReachHere(); | |
1443 return Address::no_scale; | |
1444 } | |
1445 | |
1446 | |
1447 void LIR_Assembler::emit_op3(LIR_Op3* op) { | |
1448 switch (op->code()) { | |
1449 case lir_idiv: | |
1450 case lir_irem: | |
1451 arithmetic_idiv(op->code(), | |
1452 op->in_opr1(), | |
1453 op->in_opr2(), | |
1454 op->in_opr3(), | |
1455 op->result_opr(), | |
1456 op->info()); | |
1457 break; | |
1458 default: ShouldNotReachHere(); break; | |
1459 } | |
1460 } | |
1461 | |
1462 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { | |
1463 #ifdef ASSERT | |
1464 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); | |
1465 if (op->block() != NULL) _branch_target_blocks.append(op->block()); | |
1466 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); | |
1467 #endif | |
1468 | |
1469 if (op->cond() == lir_cond_always) { | |
1470 if (op->info() != NULL) add_debug_info_for_branch(op->info()); | |
1471 __ jmp (*(op->label())); | |
1472 } else { | |
1473 Assembler::Condition acond = Assembler::zero; | |
1474 if (op->code() == lir_cond_float_branch) { | |
1475 assert(op->ublock() != NULL, "must have unordered successor"); | |
1476 __ jcc(Assembler::parity, *(op->ublock()->label())); | |
1477 switch(op->cond()) { | |
1478 case lir_cond_equal: acond = Assembler::equal; break; | |
1479 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1480 case lir_cond_less: acond = Assembler::below; break; | |
1481 case lir_cond_lessEqual: acond = Assembler::belowEqual; break; | |
1482 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break; | |
1483 case lir_cond_greater: acond = Assembler::above; break; | |
1484 default: ShouldNotReachHere(); | |
1485 } | |
1486 } else { | |
1487 switch (op->cond()) { | |
1488 case lir_cond_equal: acond = Assembler::equal; break; | |
1489 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1490 case lir_cond_less: acond = Assembler::less; break; | |
1491 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; | |
1492 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break; | |
1493 case lir_cond_greater: acond = Assembler::greater; break; | |
1494 case lir_cond_belowEqual: acond = Assembler::belowEqual; break; | |
1495 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break; | |
1496 default: ShouldNotReachHere(); | |
1497 } | |
1498 } | |
1499 __ jcc(acond,*(op->label())); | |
1500 } | |
1501 } | |
1502 | |
1503 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { | |
1504 LIR_Opr src = op->in_opr(); | |
1505 LIR_Opr dest = op->result_opr(); | |
1506 | |
1507 switch (op->bytecode()) { | |
1508 case Bytecodes::_i2l: | |
304 | 1509 #ifdef _LP64 |
1510 __ movl2ptr(dest->as_register_lo(), src->as_register()); | |
1511 #else | |
0 | 1512 move_regs(src->as_register(), dest->as_register_lo()); |
1513 move_regs(src->as_register(), dest->as_register_hi()); | |
1514 __ sarl(dest->as_register_hi(), 31); | |
304 | 1515 #endif // LP64 |
0 | 1516 break; |
1517 | |
1518 case Bytecodes::_l2i: | |
1519 move_regs(src->as_register_lo(), dest->as_register()); | |
1520 break; | |
1521 | |
1522 case Bytecodes::_i2b: | |
1523 move_regs(src->as_register(), dest->as_register()); | |
1524 __ sign_extend_byte(dest->as_register()); | |
1525 break; | |
1526 | |
1527 case Bytecodes::_i2c: | |
1528 move_regs(src->as_register(), dest->as_register()); | |
1529 __ andl(dest->as_register(), 0xFFFF); | |
1530 break; | |
1531 | |
1532 case Bytecodes::_i2s: | |
1533 move_regs(src->as_register(), dest->as_register()); | |
1534 __ sign_extend_short(dest->as_register()); | |
1535 break; | |
1536 | |
1537 | |
1538 case Bytecodes::_f2d: | |
1539 case Bytecodes::_d2f: | |
1540 if (dest->is_single_xmm()) { | |
1541 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg()); | |
1542 } else if (dest->is_double_xmm()) { | |
1543 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg()); | |
1544 } else { | |
1545 assert(src->fpu() == dest->fpu(), "register must be equal"); | |
1546 // do nothing (float result is rounded later through spilling) | |
1547 } | |
1548 break; | |
1549 | |
1550 case Bytecodes::_i2f: | |
1551 case Bytecodes::_i2d: | |
1552 if (dest->is_single_xmm()) { | |
304 | 1553 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register()); |
0 | 1554 } else if (dest->is_double_xmm()) { |
304 | 1555 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register()); |
0 | 1556 } else { |
1557 assert(dest->fpu() == 0, "result must be on TOS"); | |
1558 __ movl(Address(rsp, 0), src->as_register()); | |
1559 __ fild_s(Address(rsp, 0)); | |
1560 } | |
1561 break; | |
1562 | |
1563 case Bytecodes::_f2i: | |
1564 case Bytecodes::_d2i: | |
1565 if (src->is_single_xmm()) { | |
304 | 1566 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg()); |
0 | 1567 } else if (src->is_double_xmm()) { |
304 | 1568 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg()); |
0 | 1569 } else { |
1570 assert(src->fpu() == 0, "input must be on TOS"); | |
1571 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc())); | |
1572 __ fist_s(Address(rsp, 0)); | |
1573 __ movl(dest->as_register(), Address(rsp, 0)); | |
1574 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1575 } | |
1576 | |
1577 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub | |
1578 assert(op->stub() != NULL, "stub required"); | |
1579 __ cmpl(dest->as_register(), 0x80000000); | |
1580 __ jcc(Assembler::equal, *op->stub()->entry()); | |
1581 __ bind(*op->stub()->continuation()); | |
1582 break; | |
1583 | |
1584 case Bytecodes::_l2f: | |
1585 case Bytecodes::_l2d: | |
1586 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)"); | |
1587 assert(dest->fpu() == 0, "result must be on TOS"); | |
1588 | |
304 | 1589 __ movptr(Address(rsp, 0), src->as_register_lo()); |
1590 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi())); | |
0 | 1591 __ fild_d(Address(rsp, 0)); |
1592 // float result is rounded later through spilling | |
1593 break; | |
1594 | |
1595 case Bytecodes::_f2l: | |
1596 case Bytecodes::_d2l: | |
1597 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)"); | |
1598 assert(src->fpu() == 0, "input must be on TOS"); | |
304 | 1599 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers"); |
0 | 1600 |
1601 // instruction sequence too long to inline it here | |
1602 { | |
1603 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id))); | |
1604 } | |
1605 break; | |
1606 | |
1607 default: ShouldNotReachHere(); | |
1608 } | |
1609 } | |
1610 | |
1611 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { | |
1612 if (op->init_check()) { | |
1613 __ cmpl(Address(op->klass()->as_register(), | |
1614 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), | |
1615 instanceKlass::fully_initialized); | |
1616 add_debug_info_for_null_check_here(op->stub()->info()); | |
1617 __ jcc(Assembler::notEqual, *op->stub()->entry()); | |
1618 } | |
1619 __ allocate_object(op->obj()->as_register(), | |
1620 op->tmp1()->as_register(), | |
1621 op->tmp2()->as_register(), | |
1622 op->header_size(), | |
1623 op->object_size(), | |
1624 op->klass()->as_register(), | |
1625 *op->stub()->entry()); | |
1626 __ bind(*op->stub()->continuation()); | |
1627 } | |
1628 | |
1629 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { | |
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1630 Register len = op->len()->as_register(); |
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1631 LP64_ONLY( __ movslq(len, len); ) |
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1632 |
0 | 1633 if (UseSlowPath || |
1634 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || | |
1635 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { | |
1636 __ jmp(*op->stub()->entry()); | |
1637 } else { | |
1638 Register tmp1 = op->tmp1()->as_register(); | |
1639 Register tmp2 = op->tmp2()->as_register(); | |
1640 Register tmp3 = op->tmp3()->as_register(); | |
1641 if (len == tmp1) { | |
1642 tmp1 = tmp3; | |
1643 } else if (len == tmp2) { | |
1644 tmp2 = tmp3; | |
1645 } else if (len == tmp3) { | |
1646 // everything is ok | |
1647 } else { | |
304 | 1648 __ mov(tmp3, len); |
0 | 1649 } |
1650 __ allocate_array(op->obj()->as_register(), | |
1651 len, | |
1652 tmp1, | |
1653 tmp2, | |
1654 arrayOopDesc::header_size(op->type()), | |
1655 array_element_size(op->type()), | |
1656 op->klass()->as_register(), | |
1657 *op->stub()->entry()); | |
1658 } | |
1659 __ bind(*op->stub()->continuation()); | |
1660 } | |
1661 | |
1783 | 1662 void LIR_Assembler::type_profile_helper(Register mdo, |
1663 ciMethodData *md, ciProfileData *data, | |
1664 Register recv, Label* update_done) { | |
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1665 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { |
1783 | 1666 Label next_test; |
1667 // See if the receiver is receiver[n]. | |
1668 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)))); | |
1669 __ jccb(Assembler::notEqual, next_test); | |
1670 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))); | |
1671 __ addptr(data_addr, DataLayout::counter_increment); | |
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1672 __ jmp(*update_done); |
1783 | 1673 __ bind(next_test); |
1674 } | |
1675 | |
1676 // Didn't find receiver; find next empty slot and fill it in | |
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1677 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { |
1783 | 1678 Label next_test; |
1679 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))); | |
1680 __ cmpptr(recv_addr, (intptr_t)NULL_WORD); | |
1681 __ jccb(Assembler::notEqual, next_test); | |
1682 __ movptr(recv_addr, recv); | |
1683 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment); | |
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1684 __ jmp(*update_done); |
1783 | 1685 __ bind(next_test); |
1686 } | |
1687 } | |
1688 | |
1791
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1689 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) { |
1783 | 1690 // we always need a stub for the failure case. |
1691 CodeStub* stub = op->stub(); | |
1692 Register obj = op->object()->as_register(); | |
1693 Register k_RInfo = op->tmp1()->as_register(); | |
1694 Register klass_RInfo = op->tmp2()->as_register(); | |
1695 Register dst = op->result_opr()->as_register(); | |
1696 ciKlass* k = op->klass(); | |
1697 Register Rtmp1 = noreg; | |
1698 | |
1699 // check if it needs to be profiled | |
1700 ciMethodData* md; | |
1701 ciProfileData* data; | |
1702 | |
1703 if (op->should_profile()) { | |
1704 ciMethod* method = op->profiled_method(); | |
1705 assert(method != NULL, "Should have method"); | |
1706 int bci = op->profiled_bci(); | |
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1707 md = method->method_data_or_null(); |
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1708 assert(md != NULL, "Sanity"); |
1783 | 1709 data = md->bci_to_data(bci); |
1791
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1710 assert(data != NULL, "need data for type check"); |
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1711 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); |
1783 | 1712 } |
1791
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1713 Label profile_cast_success, profile_cast_failure; |
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1714 Label *success_target = op->should_profile() ? &profile_cast_success : success; |
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1715 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure; |
1783 | 1716 |
1717 if (obj == k_RInfo) { | |
1718 k_RInfo = dst; | |
1719 } else if (obj == klass_RInfo) { | |
1720 klass_RInfo = dst; | |
1721 } | |
2002 | 1722 if (k->is_loaded() && !UseCompressedOops) { |
1783 | 1723 select_different_registers(obj, dst, k_RInfo, klass_RInfo); |
1724 } else { | |
1725 Rtmp1 = op->tmp3()->as_register(); | |
1726 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); | |
1727 } | |
1728 | |
1729 assert_different_registers(obj, k_RInfo, klass_RInfo); | |
1730 if (!k->is_loaded()) { | |
1731 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
1732 } else { | |
1733 #ifdef _LP64 | |
1734 __ movoop(k_RInfo, k->constant_encoding()); | |
1735 #endif // _LP64 | |
1736 } | |
1737 assert(obj != k_RInfo, "must be different"); | |
1738 | |
1739 __ cmpptr(obj, (int32_t)NULL_WORD); | |
1740 if (op->should_profile()) { | |
1791
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1741 Label not_null; |
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1742 __ jccb(Assembler::notEqual, not_null); |
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1743 // Object is null; update MDO and exit |
1783 | 1744 Register mdo = klass_RInfo; |
1745 __ movoop(mdo, md->constant_encoding()); | |
1746 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); | |
1747 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); | |
1748 __ orl(data_addr, header_bits); | |
1791
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1749 __ jmp(*obj_is_null); |
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1750 __ bind(not_null); |
1783 | 1751 } else { |
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1752 __ jcc(Assembler::equal, *obj_is_null); |
1783 | 1753 } |
1754 __ verify_oop(obj); | |
1755 | |
1756 if (op->fast_check()) { | |
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1757 // get object class |
1783 | 1758 // not a safepoint as obj null check happens earlier |
1759 #ifdef _LP64 | |
2002 | 1760 if (UseCompressedOops) { |
1761 __ load_klass(Rtmp1, obj); | |
1762 __ cmpptr(k_RInfo, Rtmp1); | |
1783 | 1763 } else { |
1764 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1765 } | |
2002 | 1766 #else |
1767 if (k->is_loaded()) { | |
1768 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); | |
1769 } else { | |
1770 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1771 } | |
1772 #endif | |
1783 | 1773 __ jcc(Assembler::notEqual, *failure_target); |
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1774 // successful cast, fall through to profile or jump |
1783 | 1775 } else { |
1776 // get object class | |
1777 // not a safepoint as obj null check happens earlier | |
2002 | 1778 __ load_klass(klass_RInfo, obj); |
1783 | 1779 if (k->is_loaded()) { |
1780 // See if we get an immediate positive hit | |
1781 #ifdef _LP64 | |
1782 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); | |
1783 #else | |
1784 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); | |
1785 #endif // _LP64 | |
1786 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { | |
1787 __ jcc(Assembler::notEqual, *failure_target); | |
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1788 // successful cast, fall through to profile or jump |
1783 | 1789 } else { |
1790 // See if we get an immediate positive hit | |
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1791 __ jcc(Assembler::equal, *success_target); |
1783 | 1792 // check for self |
1793 #ifdef _LP64 | |
1794 __ cmpptr(klass_RInfo, k_RInfo); | |
1795 #else | |
1796 __ cmpoop(klass_RInfo, k->constant_encoding()); | |
1797 #endif // _LP64 | |
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1798 __ jcc(Assembler::equal, *success_target); |
1783 | 1799 |
1800 __ push(klass_RInfo); | |
1801 #ifdef _LP64 | |
1802 __ push(k_RInfo); | |
1803 #else | |
1804 __ pushoop(k->constant_encoding()); | |
1805 #endif // _LP64 | |
1806 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); | |
1807 __ pop(klass_RInfo); | |
1808 __ pop(klass_RInfo); | |
1809 // result is a boolean | |
1810 __ cmpl(klass_RInfo, 0); | |
1811 __ jcc(Assembler::equal, *failure_target); | |
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1812 // successful cast, fall through to profile or jump |
1783 | 1813 } |
1814 } else { | |
1815 // perform the fast part of the checking logic | |
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1816 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); |
1783 | 1817 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
1818 __ push(klass_RInfo); | |
1819 __ push(k_RInfo); | |
1820 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); | |
1821 __ pop(klass_RInfo); | |
1822 __ pop(k_RInfo); | |
1823 // result is a boolean | |
1824 __ cmpl(k_RInfo, 0); | |
1825 __ jcc(Assembler::equal, *failure_target); | |
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1826 // successful cast, fall through to profile or jump |
1783 | 1827 } |
1828 } | |
1829 if (op->should_profile()) { | |
1830 Register mdo = klass_RInfo, recv = k_RInfo; | |
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1831 __ bind(profile_cast_success); |
1783 | 1832 __ movoop(mdo, md->constant_encoding()); |
2002 | 1833 __ load_klass(recv, obj); |
1783 | 1834 Label update_done; |
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1835 type_profile_helper(mdo, md, data, recv, success); |
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1836 __ jmp(*success); |
1783 | 1837 |
1838 __ bind(profile_cast_failure); | |
1839 __ movoop(mdo, md->constant_encoding()); | |
1840 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); | |
1841 __ subptr(counter_addr, DataLayout::counter_increment); | |
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1842 __ jmp(*failure); |
1783 | 1843 } |
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1844 __ jmp(*success); |
1783 | 1845 } |
0 | 1846 |
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1847 |
0 | 1848 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { |
1849 LIR_Code code = op->code(); | |
1850 if (code == lir_store_check) { | |
1851 Register value = op->object()->as_register(); | |
1852 Register array = op->array()->as_register(); | |
1853 Register k_RInfo = op->tmp1()->as_register(); | |
1854 Register klass_RInfo = op->tmp2()->as_register(); | |
1855 Register Rtmp1 = op->tmp3()->as_register(); | |
1856 | |
1857 CodeStub* stub = op->stub(); | |
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1858 |
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1859 // check if it needs to be profiled |
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1860 ciMethodData* md; |
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1861 ciProfileData* data; |
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1862 |
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1863 if (op->should_profile()) { |
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1864 ciMethod* method = op->profiled_method(); |
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1865 assert(method != NULL, "Should have method"); |
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1866 int bci = op->profiled_bci(); |
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1867 md = method->method_data_or_null(); |
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1868 assert(md != NULL, "Sanity"); |
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1869 data = md->bci_to_data(bci); |
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1870 assert(data != NULL, "need data for type check"); |
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1871 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); |
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1872 } |
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1873 Label profile_cast_success, profile_cast_failure, done; |
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1874 Label *success_target = op->should_profile() ? &profile_cast_success : &done; |
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1875 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); |
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1876 |
304 | 1877 __ cmpptr(value, (int32_t)NULL_WORD); |
1791
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1878 if (op->should_profile()) { |
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1879 Label not_null; |
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1880 __ jccb(Assembler::notEqual, not_null); |
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1881 // Object is null; update MDO and exit |
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1882 Register mdo = klass_RInfo; |
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1883 __ movoop(mdo, md->constant_encoding()); |
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1884 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); |
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1885 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); |
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1886 __ orl(data_addr, header_bits); |
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1887 __ jmp(done); |
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1888 __ bind(not_null); |
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1889 } else { |
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1890 __ jcc(Assembler::equal, done); |
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1891 } |
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1892 |
0 | 1893 add_debug_info_for_null_check_here(op->info_for_exception()); |
2002 | 1894 __ load_klass(k_RInfo, array); |
1895 __ load_klass(klass_RInfo, value); | |
1896 | |
1897 // get instance klass (it's already uncompressed) | |
304 | 1898 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); |
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1899 // perform the fast part of the checking logic |
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1900 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); |
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1901 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1902 __ push(klass_RInfo); |
1903 __ push(k_RInfo); | |
0 | 1904 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1905 __ pop(klass_RInfo); |
1906 __ pop(k_RInfo); | |
1907 // result is a boolean | |
0 | 1908 __ cmpl(k_RInfo, 0); |
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1909 __ jcc(Assembler::equal, *failure_target); |
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1910 // fall through to the success case |
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1911 |
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1912 if (op->should_profile()) { |
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1913 Register mdo = klass_RInfo, recv = k_RInfo; |
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1914 __ bind(profile_cast_success); |
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1915 __ movoop(mdo, md->constant_encoding()); |
2002 | 1916 __ load_klass(recv, value); |
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1917 Label update_done; |
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1918 type_profile_helper(mdo, md, data, recv, &done); |
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1919 __ jmpb(done); |
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1920 |
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1921 __ bind(profile_cast_failure); |
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1922 __ movoop(mdo, md->constant_encoding()); |
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1923 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); |
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1924 __ subptr(counter_addr, DataLayout::counter_increment); |
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1925 __ jmp(*stub->entry()); |
0 | 1926 } |
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1927 |
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1928 __ bind(done); |
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1929 } else |
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1930 if (code == lir_checkcast) { |
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1931 Register obj = op->object()->as_register(); |
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1932 Register dst = op->result_opr()->as_register(); |
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1933 Label success; |
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1934 emit_typecheck_helper(op, &success, op->stub()->entry(), &success); |
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1935 __ bind(success); |
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1936 if (dst != obj) { |
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1937 __ mov(dst, obj); |
0 | 1938 } |
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1939 } else |
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1940 if (code == lir_instanceof) { |
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1941 Register obj = op->object()->as_register(); |
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1942 Register dst = op->result_opr()->as_register(); |
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1943 Label success, failure, done; |
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1944 emit_typecheck_helper(op, &success, &failure, &failure); |
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1945 __ bind(failure); |
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1946 __ xorptr(dst, dst); |
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1947 __ jmpb(done); |
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1948 __ bind(success); |
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1949 __ movptr(dst, 1); |
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1950 __ bind(done); |
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1951 } else { |
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1952 ShouldNotReachHere(); |
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1953 } |
0 | 1954 |
1955 } | |
1956 | |
1957 | |
1958 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { | |
304 | 1959 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { |
0 | 1960 assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); |
1961 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); | |
1962 assert(op->new_value()->as_register_lo() == rbx, "wrong register"); | |
1963 assert(op->new_value()->as_register_hi() == rcx, "wrong register"); | |
1964 Register addr = op->addr()->as_register(); | |
1965 if (os::is_MP()) { | |
1966 __ lock(); | |
1967 } | |
304 | 1968 NOT_LP64(__ cmpxchg8(Address(addr, 0))); |
1969 | |
1970 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { | |
1971 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) | |
1972 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
0 | 1973 Register newval = op->new_value()->as_register(); |
1974 Register cmpval = op->cmp_value()->as_register(); | |
1975 assert(cmpval == rax, "wrong register"); | |
1976 assert(newval != NULL, "new val must be register"); | |
1977 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1978 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1979 assert(newval != addr, "new value and addr must be in different registers"); | |
2002 | 1980 |
304 | 1981 if ( op->code() == lir_cas_obj) { |
2002 | 1982 #ifdef _LP64 |
1983 if (UseCompressedOops) { | |
1984 __ encode_heap_oop(cmpval); | |
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1985 __ mov(rscratch1, newval); |
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1986 __ encode_heap_oop(rscratch1); |
2002 | 1987 if (os::is_MP()) { |
1988 __ lock(); | |
1989 } | |
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1990 // cmpval (rax) is implicitly used by this instruction |
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1991 __ cmpxchgl(rscratch1, Address(addr, 0)); |
2002 | 1992 } else |
1993 #endif | |
1994 { | |
1995 if (os::is_MP()) { | |
1996 __ lock(); | |
1997 } | |
1998 __ cmpxchgptr(newval, Address(addr, 0)); | |
1999 } | |
2000 } else { | |
2001 assert(op->code() == lir_cas_int, "lir_cas_int expected"); | |
2002 if (os::is_MP()) { | |
2003 __ lock(); | |
2004 } | |
304 | 2005 __ cmpxchgl(newval, Address(addr, 0)); |
2006 } | |
2007 #ifdef _LP64 | |
2008 } else if (op->code() == lir_cas_long) { | |
2009 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
2010 Register newval = op->new_value()->as_register_lo(); | |
2011 Register cmpval = op->cmp_value()->as_register_lo(); | |
2012 assert(cmpval == rax, "wrong register"); | |
2013 assert(newval != NULL, "new val must be register"); | |
2014 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
2015 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
2016 assert(newval != addr, "new value and addr must be in different registers"); | |
2017 if (os::is_MP()) { | |
2018 __ lock(); | |
2019 } | |
2020 __ cmpxchgq(newval, Address(addr, 0)); | |
2021 #endif // _LP64 | |
0 | 2022 } else { |
2023 Unimplemented(); | |
2024 } | |
2025 } | |
2026 | |
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2027 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) { |
0 | 2028 Assembler::Condition acond, ncond; |
2029 switch (condition) { | |
2030 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; | |
2031 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; | |
2032 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; | |
2033 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; | |
2034 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; | |
2035 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; | |
2036 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; | |
2037 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; | |
2038 default: ShouldNotReachHere(); | |
2039 } | |
2040 | |
2041 if (opr1->is_cpu_register()) { | |
2042 reg2reg(opr1, result); | |
2043 } else if (opr1->is_stack()) { | |
2044 stack2reg(opr1, result, result->type()); | |
2045 } else if (opr1->is_constant()) { | |
2046 const2reg(opr1, result, lir_patch_none, NULL); | |
2047 } else { | |
2048 ShouldNotReachHere(); | |
2049 } | |
2050 | |
2051 if (VM_Version::supports_cmov() && !opr2->is_constant()) { | |
2052 // optimized version that does not require a branch | |
2053 if (opr2->is_single_cpu()) { | |
2054 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); | |
304 | 2055 __ cmov(ncond, result->as_register(), opr2->as_register()); |
0 | 2056 } else if (opr2->is_double_cpu()) { |
2057 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
2058 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
304 | 2059 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); |
2060 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) | |
0 | 2061 } else if (opr2->is_single_stack()) { |
2062 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2063 } else if (opr2->is_double_stack()) { | |
304 | 2064 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); |
2065 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) | |
0 | 2066 } else { |
2067 ShouldNotReachHere(); | |
2068 } | |
2069 | |
2070 } else { | |
2071 Label skip; | |
2072 __ jcc (acond, skip); | |
2073 if (opr2->is_cpu_register()) { | |
2074 reg2reg(opr2, result); | |
2075 } else if (opr2->is_stack()) { | |
2076 stack2reg(opr2, result, result->type()); | |
2077 } else if (opr2->is_constant()) { | |
2078 const2reg(opr2, result, lir_patch_none, NULL); | |
2079 } else { | |
2080 ShouldNotReachHere(); | |
2081 } | |
2082 __ bind(skip); | |
2083 } | |
2084 } | |
2085 | |
2086 | |
2087 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { | |
2088 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); | |
2089 | |
2090 if (left->is_single_cpu()) { | |
2091 assert(left == dest, "left and dest must be equal"); | |
2092 Register lreg = left->as_register(); | |
2093 | |
2094 if (right->is_single_cpu()) { | |
2095 // cpu register - cpu register | |
2096 Register rreg = right->as_register(); | |
2097 switch (code) { | |
2098 case lir_add: __ addl (lreg, rreg); break; | |
2099 case lir_sub: __ subl (lreg, rreg); break; | |
2100 case lir_mul: __ imull(lreg, rreg); break; | |
2101 default: ShouldNotReachHere(); | |
2102 } | |
2103 | |
2104 } else if (right->is_stack()) { | |
2105 // cpu register - stack | |
2106 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2107 switch (code) { | |
2108 case lir_add: __ addl(lreg, raddr); break; | |
2109 case lir_sub: __ subl(lreg, raddr); break; | |
2110 default: ShouldNotReachHere(); | |
2111 } | |
2112 | |
2113 } else if (right->is_constant()) { | |
2114 // cpu register - constant | |
2115 jint c = right->as_constant_ptr()->as_jint(); | |
2116 switch (code) { | |
2117 case lir_add: { | |
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2118 __ incrementl(lreg, c); |
0 | 2119 break; |
2120 } | |
2121 case lir_sub: { | |
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2122 __ decrementl(lreg, c); |
0 | 2123 break; |
2124 } | |
2125 default: ShouldNotReachHere(); | |
2126 } | |
2127 | |
2128 } else { | |
2129 ShouldNotReachHere(); | |
2130 } | |
2131 | |
2132 } else if (left->is_double_cpu()) { | |
2133 assert(left == dest, "left and dest must be equal"); | |
2134 Register lreg_lo = left->as_register_lo(); | |
2135 Register lreg_hi = left->as_register_hi(); | |
2136 | |
2137 if (right->is_double_cpu()) { | |
2138 // cpu register - cpu register | |
2139 Register rreg_lo = right->as_register_lo(); | |
2140 Register rreg_hi = right->as_register_hi(); | |
304 | 2141 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); |
2142 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); | |
0 | 2143 switch (code) { |
2144 case lir_add: | |
304 | 2145 __ addptr(lreg_lo, rreg_lo); |
2146 NOT_LP64(__ adcl(lreg_hi, rreg_hi)); | |
0 | 2147 break; |
2148 case lir_sub: | |
304 | 2149 __ subptr(lreg_lo, rreg_lo); |
2150 NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); | |
0 | 2151 break; |
2152 case lir_mul: | |
304 | 2153 #ifdef _LP64 |
2154 __ imulq(lreg_lo, rreg_lo); | |
2155 #else | |
0 | 2156 assert(lreg_lo == rax && lreg_hi == rdx, "must be"); |
2157 __ imull(lreg_hi, rreg_lo); | |
2158 __ imull(rreg_hi, lreg_lo); | |
2159 __ addl (rreg_hi, lreg_hi); | |
2160 __ mull (rreg_lo); | |
2161 __ addl (lreg_hi, rreg_hi); | |
304 | 2162 #endif // _LP64 |
0 | 2163 break; |
2164 default: | |
2165 ShouldNotReachHere(); | |
2166 } | |
2167 | |
2168 } else if (right->is_constant()) { | |
2169 // cpu register - constant | |
304 | 2170 #ifdef _LP64 |
2171 jlong c = right->as_constant_ptr()->as_jlong_bits(); | |
2172 __ movptr(r10, (intptr_t) c); | |
2173 switch (code) { | |
2174 case lir_add: | |
2175 __ addptr(lreg_lo, r10); | |
2176 break; | |
2177 case lir_sub: | |
2178 __ subptr(lreg_lo, r10); | |
2179 break; | |
2180 default: | |
2181 ShouldNotReachHere(); | |
2182 } | |
2183 #else | |
0 | 2184 jint c_lo = right->as_constant_ptr()->as_jint_lo(); |
2185 jint c_hi = right->as_constant_ptr()->as_jint_hi(); | |
2186 switch (code) { | |
2187 case lir_add: | |
304 | 2188 __ addptr(lreg_lo, c_lo); |
0 | 2189 __ adcl(lreg_hi, c_hi); |
2190 break; | |
2191 case lir_sub: | |
304 | 2192 __ subptr(lreg_lo, c_lo); |
0 | 2193 __ sbbl(lreg_hi, c_hi); |
2194 break; | |
2195 default: | |
2196 ShouldNotReachHere(); | |
2197 } | |
304 | 2198 #endif // _LP64 |
0 | 2199 |
2200 } else { | |
2201 ShouldNotReachHere(); | |
2202 } | |
2203 | |
2204 } else if (left->is_single_xmm()) { | |
2205 assert(left == dest, "left and dest must be equal"); | |
2206 XMMRegister lreg = left->as_xmm_float_reg(); | |
2207 | |
2208 if (right->is_single_xmm()) { | |
2209 XMMRegister rreg = right->as_xmm_float_reg(); | |
2210 switch (code) { | |
2211 case lir_add: __ addss(lreg, rreg); break; | |
2212 case lir_sub: __ subss(lreg, rreg); break; | |
2213 case lir_mul_strictfp: // fall through | |
2214 case lir_mul: __ mulss(lreg, rreg); break; | |
2215 case lir_div_strictfp: // fall through | |
2216 case lir_div: __ divss(lreg, rreg); break; | |
2217 default: ShouldNotReachHere(); | |
2218 } | |
2219 } else { | |
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 // hack for now | |
2225 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); | |
2226 } else { | |
2227 ShouldNotReachHere(); | |
2228 } | |
2229 switch (code) { | |
2230 case lir_add: __ addss(lreg, raddr); break; | |
2231 case lir_sub: __ subss(lreg, raddr); break; | |
2232 case lir_mul_strictfp: // fall through | |
2233 case lir_mul: __ mulss(lreg, raddr); break; | |
2234 case lir_div_strictfp: // fall through | |
2235 case lir_div: __ divss(lreg, raddr); break; | |
2236 default: ShouldNotReachHere(); | |
2237 } | |
2238 } | |
2239 | |
2240 } else if (left->is_double_xmm()) { | |
2241 assert(left == dest, "left and dest must be equal"); | |
2242 | |
2243 XMMRegister lreg = left->as_xmm_double_reg(); | |
2244 if (right->is_double_xmm()) { | |
2245 XMMRegister rreg = right->as_xmm_double_reg(); | |
2246 switch (code) { | |
2247 case lir_add: __ addsd(lreg, rreg); break; | |
2248 case lir_sub: __ subsd(lreg, rreg); break; | |
2249 case lir_mul_strictfp: // fall through | |
2250 case lir_mul: __ mulsd(lreg, rreg); break; | |
2251 case lir_div_strictfp: // fall through | |
2252 case lir_div: __ divsd(lreg, rreg); break; | |
2253 default: ShouldNotReachHere(); | |
2254 } | |
2255 } else { | |
2256 Address raddr; | |
2257 if (right->is_double_stack()) { | |
2258 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2259 } else if (right->is_constant()) { | |
2260 // hack for now | |
2261 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2262 } else { | |
2263 ShouldNotReachHere(); | |
2264 } | |
2265 switch (code) { | |
2266 case lir_add: __ addsd(lreg, raddr); break; | |
2267 case lir_sub: __ subsd(lreg, raddr); break; | |
2268 case lir_mul_strictfp: // fall through | |
2269 case lir_mul: __ mulsd(lreg, raddr); break; | |
2270 case lir_div_strictfp: // fall through | |
2271 case lir_div: __ divsd(lreg, raddr); break; | |
2272 default: ShouldNotReachHere(); | |
2273 } | |
2274 } | |
2275 | |
2276 } else if (left->is_single_fpu()) { | |
2277 assert(dest->is_single_fpu(), "fpu stack allocation required"); | |
2278 | |
2279 if (right->is_single_fpu()) { | |
2280 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); | |
2281 | |
2282 } else { | |
2283 assert(left->fpu_regnr() == 0, "left must be on TOS"); | |
2284 assert(dest->fpu_regnr() == 0, "dest must be on TOS"); | |
2285 | |
2286 Address raddr; | |
2287 if (right->is_single_stack()) { | |
2288 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2289 } else if (right->is_constant()) { | |
2290 address const_addr = float_constant(right->as_jfloat()); | |
2291 assert(const_addr != NULL, "incorrect float/double constant maintainance"); | |
2292 // hack for now | |
2293 raddr = __ as_Address(InternalAddress(const_addr)); | |
2294 } else { | |
2295 ShouldNotReachHere(); | |
2296 } | |
2297 | |
2298 switch (code) { | |
2299 case lir_add: __ fadd_s(raddr); break; | |
2300 case lir_sub: __ fsub_s(raddr); break; | |
2301 case lir_mul_strictfp: // fall through | |
2302 case lir_mul: __ fmul_s(raddr); break; | |
2303 case lir_div_strictfp: // fall through | |
2304 case lir_div: __ fdiv_s(raddr); break; | |
2305 default: ShouldNotReachHere(); | |
2306 } | |
2307 } | |
2308 | |
2309 } else if (left->is_double_fpu()) { | |
2310 assert(dest->is_double_fpu(), "fpu stack allocation required"); | |
2311 | |
2312 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2313 // Double values require special handling for strictfp mul/div on x86 | |
2314 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
2315 __ fmulp(left->fpu_regnrLo() + 1); | |
2316 } | |
2317 | |
2318 if (right->is_double_fpu()) { | |
2319 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); | |
2320 | |
2321 } else { | |
2322 assert(left->fpu_regnrLo() == 0, "left must be on TOS"); | |
2323 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); | |
2324 | |
2325 Address raddr; | |
2326 if (right->is_double_stack()) { | |
2327 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2328 } else if (right->is_constant()) { | |
2329 // hack for now | |
2330 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2331 } else { | |
2332 ShouldNotReachHere(); | |
2333 } | |
2334 | |
2335 switch (code) { | |
2336 case lir_add: __ fadd_d(raddr); break; | |
2337 case lir_sub: __ fsub_d(raddr); break; | |
2338 case lir_mul_strictfp: // fall through | |
2339 case lir_mul: __ fmul_d(raddr); break; | |
2340 case lir_div_strictfp: // fall through | |
2341 case lir_div: __ fdiv_d(raddr); break; | |
2342 default: ShouldNotReachHere(); | |
2343 } | |
2344 } | |
2345 | |
2346 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2347 // Double values require special handling for strictfp mul/div on x86 | |
2348 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
2349 __ fmulp(dest->fpu_regnrLo() + 1); | |
2350 } | |
2351 | |
2352 } else if (left->is_single_stack() || left->is_address()) { | |
2353 assert(left == dest, "left and dest must be equal"); | |
2354 | |
2355 Address laddr; | |
2356 if (left->is_single_stack()) { | |
2357 laddr = frame_map()->address_for_slot(left->single_stack_ix()); | |
2358 } else if (left->is_address()) { | |
2359 laddr = as_Address(left->as_address_ptr()); | |
2360 } else { | |
2361 ShouldNotReachHere(); | |
2362 } | |
2363 | |
2364 if (right->is_single_cpu()) { | |
2365 Register rreg = right->as_register(); | |
2366 switch (code) { | |
2367 case lir_add: __ addl(laddr, rreg); break; | |
2368 case lir_sub: __ subl(laddr, rreg); break; | |
2369 default: ShouldNotReachHere(); | |
2370 } | |
2371 } else if (right->is_constant()) { | |
2372 jint c = right->as_constant_ptr()->as_jint(); | |
2373 switch (code) { | |
2374 case lir_add: { | |
304 | 2375 __ incrementl(laddr, c); |
0 | 2376 break; |
2377 } | |
2378 case lir_sub: { | |
304 | 2379 __ decrementl(laddr, c); |
0 | 2380 break; |
2381 } | |
2382 default: ShouldNotReachHere(); | |
2383 } | |
2384 } else { | |
2385 ShouldNotReachHere(); | |
2386 } | |
2387 | |
2388 } else { | |
2389 ShouldNotReachHere(); | |
2390 } | |
2391 } | |
2392 | |
2393 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { | |
2394 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); | |
2395 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); | |
2396 assert(left_index == 0 || right_index == 0, "either must be on top of stack"); | |
2397 | |
2398 bool left_is_tos = (left_index == 0); | |
2399 bool dest_is_tos = (dest_index == 0); | |
2400 int non_tos_index = (left_is_tos ? right_index : left_index); | |
2401 | |
2402 switch (code) { | |
2403 case lir_add: | |
2404 if (pop_fpu_stack) __ faddp(non_tos_index); | |
2405 else if (dest_is_tos) __ fadd (non_tos_index); | |
2406 else __ fadda(non_tos_index); | |
2407 break; | |
2408 | |
2409 case lir_sub: | |
2410 if (left_is_tos) { | |
2411 if (pop_fpu_stack) __ fsubrp(non_tos_index); | |
2412 else if (dest_is_tos) __ fsub (non_tos_index); | |
2413 else __ fsubra(non_tos_index); | |
2414 } else { | |
2415 if (pop_fpu_stack) __ fsubp (non_tos_index); | |
2416 else if (dest_is_tos) __ fsubr (non_tos_index); | |
2417 else __ fsuba (non_tos_index); | |
2418 } | |
2419 break; | |
2420 | |
2421 case lir_mul_strictfp: // fall through | |
2422 case lir_mul: | |
2423 if (pop_fpu_stack) __ fmulp(non_tos_index); | |
2424 else if (dest_is_tos) __ fmul (non_tos_index); | |
2425 else __ fmula(non_tos_index); | |
2426 break; | |
2427 | |
2428 case lir_div_strictfp: // fall through | |
2429 case lir_div: | |
2430 if (left_is_tos) { | |
2431 if (pop_fpu_stack) __ fdivrp(non_tos_index); | |
2432 else if (dest_is_tos) __ fdiv (non_tos_index); | |
2433 else __ fdivra(non_tos_index); | |
2434 } else { | |
2435 if (pop_fpu_stack) __ fdivp (non_tos_index); | |
2436 else if (dest_is_tos) __ fdivr (non_tos_index); | |
2437 else __ fdiva (non_tos_index); | |
2438 } | |
2439 break; | |
2440 | |
2441 case lir_rem: | |
2442 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); | |
2443 __ fremr(noreg); | |
2444 break; | |
2445 | |
2446 default: | |
2447 ShouldNotReachHere(); | |
2448 } | |
2449 } | |
2450 | |
2451 | |
2452 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { | |
2453 if (value->is_double_xmm()) { | |
2454 switch(code) { | |
2455 case lir_abs : | |
2456 { | |
2457 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { | |
2458 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); | |
2459 } | |
2460 __ andpd(dest->as_xmm_double_reg(), | |
2461 ExternalAddress((address)double_signmask_pool)); | |
2462 } | |
2463 break; | |
2464 | |
2465 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; | |
2466 // all other intrinsics are not available in the SSE instruction set, so FPU is used | |
2467 default : ShouldNotReachHere(); | |
2468 } | |
2469 | |
2470 } else if (value->is_double_fpu()) { | |
2471 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); | |
2472 switch(code) { | |
2473 case lir_log : __ flog() ; break; | |
2474 case lir_log10 : __ flog10() ; break; | |
2475 case lir_abs : __ fabs() ; break; | |
2476 case lir_sqrt : __ fsqrt(); break; | |
2477 case lir_sin : | |
2478 // Should consider not saving rbx, if not necessary | |
2479 __ trigfunc('s', op->as_Op2()->fpu_stack_size()); | |
2480 break; | |
2481 case lir_cos : | |
2482 // Should consider not saving rbx, if not necessary | |
2483 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); | |
2484 __ trigfunc('c', op->as_Op2()->fpu_stack_size()); | |
2485 break; | |
2486 case lir_tan : | |
2487 // Should consider not saving rbx, if not necessary | |
2488 __ trigfunc('t', op->as_Op2()->fpu_stack_size()); | |
2489 break; | |
2490 default : ShouldNotReachHere(); | |
2491 } | |
2492 } else { | |
2493 Unimplemented(); | |
2494 } | |
2495 } | |
2496 | |
2497 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { | |
2498 // assert(left->destroys_register(), "check"); | |
2499 if (left->is_single_cpu()) { | |
2500 Register reg = left->as_register(); | |
2501 if (right->is_constant()) { | |
2502 int val = right->as_constant_ptr()->as_jint(); | |
2503 switch (code) { | |
2504 case lir_logic_and: __ andl (reg, val); break; | |
2505 case lir_logic_or: __ orl (reg, val); break; | |
2506 case lir_logic_xor: __ xorl (reg, val); break; | |
2507 default: ShouldNotReachHere(); | |
2508 } | |
2509 } else if (right->is_stack()) { | |
2510 // added support for stack operands | |
2511 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2512 switch (code) { | |
2513 case lir_logic_and: __ andl (reg, raddr); break; | |
2514 case lir_logic_or: __ orl (reg, raddr); break; | |
2515 case lir_logic_xor: __ xorl (reg, raddr); break; | |
2516 default: ShouldNotReachHere(); | |
2517 } | |
2518 } else { | |
2519 Register rright = right->as_register(); | |
2520 switch (code) { | |
304 | 2521 case lir_logic_and: __ andptr (reg, rright); break; |
2522 case lir_logic_or : __ orptr (reg, rright); break; | |
2523 case lir_logic_xor: __ xorptr (reg, rright); break; | |
0 | 2524 default: ShouldNotReachHere(); |
2525 } | |
2526 } | |
2527 move_regs(reg, dst->as_register()); | |
2528 } else { | |
2529 Register l_lo = left->as_register_lo(); | |
2530 Register l_hi = left->as_register_hi(); | |
2531 if (right->is_constant()) { | |
304 | 2532 #ifdef _LP64 |
2533 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); | |
2534 switch (code) { | |
2535 case lir_logic_and: | |
2536 __ andq(l_lo, rscratch1); | |
2537 break; | |
2538 case lir_logic_or: | |
2539 __ orq(l_lo, rscratch1); | |
2540 break; | |
2541 case lir_logic_xor: | |
2542 __ xorq(l_lo, rscratch1); | |
2543 break; | |
2544 default: ShouldNotReachHere(); | |
2545 } | |
2546 #else | |
0 | 2547 int r_lo = right->as_constant_ptr()->as_jint_lo(); |
2548 int r_hi = right->as_constant_ptr()->as_jint_hi(); | |
2549 switch (code) { | |
2550 case lir_logic_and: | |
2551 __ andl(l_lo, r_lo); | |
2552 __ andl(l_hi, r_hi); | |
2553 break; | |
2554 case lir_logic_or: | |
2555 __ orl(l_lo, r_lo); | |
2556 __ orl(l_hi, r_hi); | |
2557 break; | |
2558 case lir_logic_xor: | |
2559 __ xorl(l_lo, r_lo); | |
2560 __ xorl(l_hi, r_hi); | |
2561 break; | |
2562 default: ShouldNotReachHere(); | |
2563 } | |
304 | 2564 #endif // _LP64 |
0 | 2565 } else { |
1572 | 2566 #ifdef _LP64 |
2567 Register r_lo; | |
2568 if (right->type() == T_OBJECT || right->type() == T_ARRAY) { | |
2569 r_lo = right->as_register(); | |
2570 } else { | |
2571 r_lo = right->as_register_lo(); | |
2572 } | |
2573 #else | |
0 | 2574 Register r_lo = right->as_register_lo(); |
2575 Register r_hi = right->as_register_hi(); | |
2576 assert(l_lo != r_hi, "overwriting registers"); | |
1572 | 2577 #endif |
0 | 2578 switch (code) { |
2579 case lir_logic_and: | |
304 | 2580 __ andptr(l_lo, r_lo); |
2581 NOT_LP64(__ andptr(l_hi, r_hi);) | |
0 | 2582 break; |
2583 case lir_logic_or: | |
304 | 2584 __ orptr(l_lo, r_lo); |
2585 NOT_LP64(__ orptr(l_hi, r_hi);) | |
0 | 2586 break; |
2587 case lir_logic_xor: | |
304 | 2588 __ xorptr(l_lo, r_lo); |
2589 NOT_LP64(__ xorptr(l_hi, r_hi);) | |
0 | 2590 break; |
2591 default: ShouldNotReachHere(); | |
2592 } | |
2593 } | |
2594 | |
2595 Register dst_lo = dst->as_register_lo(); | |
2596 Register dst_hi = dst->as_register_hi(); | |
2597 | |
304 | 2598 #ifdef _LP64 |
2599 move_regs(l_lo, dst_lo); | |
2600 #else | |
0 | 2601 if (dst_lo == l_hi) { |
2602 assert(dst_hi != l_lo, "overwriting registers"); | |
2603 move_regs(l_hi, dst_hi); | |
2604 move_regs(l_lo, dst_lo); | |
2605 } else { | |
2606 assert(dst_lo != l_hi, "overwriting registers"); | |
2607 move_regs(l_lo, dst_lo); | |
2608 move_regs(l_hi, dst_hi); | |
2609 } | |
304 | 2610 #endif // _LP64 |
0 | 2611 } |
2612 } | |
2613 | |
2614 | |
2615 // we assume that rax, and rdx can be overwritten | |
2616 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { | |
2617 | |
2618 assert(left->is_single_cpu(), "left must be register"); | |
2619 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); | |
2620 assert(result->is_single_cpu(), "result must be register"); | |
2621 | |
2622 // assert(left->destroys_register(), "check"); | |
2623 // assert(right->destroys_register(), "check"); | |
2624 | |
2625 Register lreg = left->as_register(); | |
2626 Register dreg = result->as_register(); | |
2627 | |
2628 if (right->is_constant()) { | |
2629 int divisor = right->as_constant_ptr()->as_jint(); | |
2630 assert(divisor > 0 && is_power_of_2(divisor), "must be"); | |
2631 if (code == lir_idiv) { | |
2632 assert(lreg == rax, "must be rax,"); | |
2633 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2634 __ cdql(); // sign extend into rdx:rax | |
2635 if (divisor == 2) { | |
2636 __ subl(lreg, rdx); | |
2637 } else { | |
2638 __ andl(rdx, divisor - 1); | |
2639 __ addl(lreg, rdx); | |
2640 } | |
2641 __ sarl(lreg, log2_intptr(divisor)); | |
2642 move_regs(lreg, dreg); | |
2643 } else if (code == lir_irem) { | |
2644 Label done; | |
304 | 2645 __ mov(dreg, lreg); |
0 | 2646 __ andl(dreg, 0x80000000 | (divisor - 1)); |
2647 __ jcc(Assembler::positive, done); | |
2648 __ decrement(dreg); | |
2649 __ orl(dreg, ~(divisor - 1)); | |
2650 __ increment(dreg); | |
2651 __ bind(done); | |
2652 } else { | |
2653 ShouldNotReachHere(); | |
2654 } | |
2655 } else { | |
2656 Register rreg = right->as_register(); | |
2657 assert(lreg == rax, "left register must be rax,"); | |
2658 assert(rreg != rdx, "right register must not be rdx"); | |
2659 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2660 | |
2661 move_regs(lreg, rax); | |
2662 | |
2663 int idivl_offset = __ corrected_idivl(rreg); | |
2664 add_debug_info_for_div0(idivl_offset, info); | |
2665 if (code == lir_irem) { | |
2666 move_regs(rdx, dreg); // result is in rdx | |
2667 } else { | |
2668 move_regs(rax, dreg); | |
2669 } | |
2670 } | |
2671 } | |
2672 | |
2673 | |
2674 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { | |
2675 if (opr1->is_single_cpu()) { | |
2676 Register reg1 = opr1->as_register(); | |
2677 if (opr2->is_single_cpu()) { | |
2678 // cpu register - cpu register | |
304 | 2679 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2680 __ cmpptr(reg1, opr2->as_register()); | |
2681 } else { | |
2682 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); | |
2683 __ cmpl(reg1, opr2->as_register()); | |
2684 } | |
0 | 2685 } else if (opr2->is_stack()) { |
2686 // cpu register - stack | |
304 | 2687 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2688 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2689 } else { | |
2690 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2691 } | |
0 | 2692 } else if (opr2->is_constant()) { |
2693 // cpu register - constant | |
2694 LIR_Const* c = opr2->as_constant_ptr(); | |
2695 if (c->type() == T_INT) { | |
2696 __ cmpl(reg1, c->as_jint()); | |
304 | 2697 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2698 // In 64bit oops are single register | |
0 | 2699 jobject o = c->as_jobject(); |
2700 if (o == NULL) { | |
304 | 2701 __ cmpptr(reg1, (int32_t)NULL_WORD); |
0 | 2702 } else { |
304 | 2703 #ifdef _LP64 |
2704 __ movoop(rscratch1, o); | |
2705 __ cmpptr(reg1, rscratch1); | |
2706 #else | |
0 | 2707 __ cmpoop(reg1, c->as_jobject()); |
304 | 2708 #endif // _LP64 |
0 | 2709 } |
2710 } else { | |
2711 ShouldNotReachHere(); | |
2712 } | |
2713 // cpu register - address | |
2714 } else if (opr2->is_address()) { | |
2715 if (op->info() != NULL) { | |
2716 add_debug_info_for_null_check_here(op->info()); | |
2717 } | |
2718 __ cmpl(reg1, as_Address(opr2->as_address_ptr())); | |
2719 } else { | |
2720 ShouldNotReachHere(); | |
2721 } | |
2722 | |
2723 } else if(opr1->is_double_cpu()) { | |
2724 Register xlo = opr1->as_register_lo(); | |
2725 Register xhi = opr1->as_register_hi(); | |
2726 if (opr2->is_double_cpu()) { | |
304 | 2727 #ifdef _LP64 |
2728 __ cmpptr(xlo, opr2->as_register_lo()); | |
2729 #else | |
0 | 2730 // cpu register - cpu register |
2731 Register ylo = opr2->as_register_lo(); | |
2732 Register yhi = opr2->as_register_hi(); | |
2733 __ subl(xlo, ylo); | |
2734 __ sbbl(xhi, yhi); | |
2735 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { | |
2736 __ orl(xhi, xlo); | |
2737 } | |
304 | 2738 #endif // _LP64 |
0 | 2739 } else if (opr2->is_constant()) { |
2740 // cpu register - constant 0 | |
2741 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); | |
304 | 2742 #ifdef _LP64 |
2743 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); | |
2744 #else | |
0 | 2745 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); |
2746 __ orl(xhi, xlo); | |
304 | 2747 #endif // _LP64 |
0 | 2748 } else { |
2749 ShouldNotReachHere(); | |
2750 } | |
2751 | |
2752 } else if (opr1->is_single_xmm()) { | |
2753 XMMRegister reg1 = opr1->as_xmm_float_reg(); | |
2754 if (opr2->is_single_xmm()) { | |
2755 // xmm register - xmm register | |
2756 __ ucomiss(reg1, opr2->as_xmm_float_reg()); | |
2757 } else if (opr2->is_stack()) { | |
2758 // xmm register - stack | |
2759 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2760 } else if (opr2->is_constant()) { | |
2761 // xmm register - constant | |
2762 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); | |
2763 } else if (opr2->is_address()) { | |
2764 // xmm register - address | |
2765 if (op->info() != NULL) { | |
2766 add_debug_info_for_null_check_here(op->info()); | |
2767 } | |
2768 __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); | |
2769 } else { | |
2770 ShouldNotReachHere(); | |
2771 } | |
2772 | |
2773 } else if (opr1->is_double_xmm()) { | |
2774 XMMRegister reg1 = opr1->as_xmm_double_reg(); | |
2775 if (opr2->is_double_xmm()) { | |
2776 // xmm register - xmm register | |
2777 __ ucomisd(reg1, opr2->as_xmm_double_reg()); | |
2778 } else if (opr2->is_stack()) { | |
2779 // xmm register - stack | |
2780 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); | |
2781 } else if (opr2->is_constant()) { | |
2782 // xmm register - constant | |
2783 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); | |
2784 } else if (opr2->is_address()) { | |
2785 // xmm register - address | |
2786 if (op->info() != NULL) { | |
2787 add_debug_info_for_null_check_here(op->info()); | |
2788 } | |
2789 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); | |
2790 } else { | |
2791 ShouldNotReachHere(); | |
2792 } | |
2793 | |
2794 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { | |
2795 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); | |
2796 assert(opr2->is_fpu_register(), "both must be registers"); | |
2797 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2798 | |
2799 } else if (opr1->is_address() && opr2->is_constant()) { | |
304 | 2800 LIR_Const* c = opr2->as_constant_ptr(); |
2801 #ifdef _LP64 | |
2802 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { | |
2803 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); | |
2804 __ movoop(rscratch1, c->as_jobject()); | |
2805 } | |
2806 #endif // LP64 | |
0 | 2807 if (op->info() != NULL) { |
2808 add_debug_info_for_null_check_here(op->info()); | |
2809 } | |
2810 // special case: address - constant | |
2811 LIR_Address* addr = opr1->as_address_ptr(); | |
2812 if (c->type() == T_INT) { | |
2813 __ cmpl(as_Address(addr), c->as_jint()); | |
304 | 2814 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2815 #ifdef _LP64 | |
2816 // %%% Make this explode if addr isn't reachable until we figure out a | |
2817 // better strategy by giving noreg as the temp for as_Address | |
2818 __ cmpptr(rscratch1, as_Address(addr, noreg)); | |
2819 #else | |
0 | 2820 __ cmpoop(as_Address(addr), c->as_jobject()); |
304 | 2821 #endif // _LP64 |
0 | 2822 } else { |
2823 ShouldNotReachHere(); | |
2824 } | |
2825 | |
2826 } else { | |
2827 ShouldNotReachHere(); | |
2828 } | |
2829 } | |
2830 | |
2831 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { | |
2832 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { | |
2833 if (left->is_single_xmm()) { | |
2834 assert(right->is_single_xmm(), "must match"); | |
2835 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2836 } else if (left->is_double_xmm()) { | |
2837 assert(right->is_double_xmm(), "must match"); | |
2838 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2839 | |
2840 } else { | |
2841 assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); | |
2842 assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); | |
2843 | |
2844 assert(left->fpu() == 0, "left must be on TOS"); | |
2845 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), | |
2846 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2847 } | |
2848 } else { | |
2849 assert(code == lir_cmp_l2i, "check"); | |
304 | 2850 #ifdef _LP64 |
1369 | 2851 Label done; |
2852 Register dest = dst->as_register(); | |
2853 __ cmpptr(left->as_register_lo(), right->as_register_lo()); | |
2854 __ movl(dest, -1); | |
2855 __ jccb(Assembler::less, done); | |
2856 __ set_byte_if_not_zero(dest); | |
2857 __ movzbl(dest, dest); | |
2858 __ bind(done); | |
304 | 2859 #else |
0 | 2860 __ lcmp2int(left->as_register_hi(), |
2861 left->as_register_lo(), | |
2862 right->as_register_hi(), | |
2863 right->as_register_lo()); | |
2864 move_regs(left->as_register_hi(), dst->as_register()); | |
304 | 2865 #endif // _LP64 |
0 | 2866 } |
2867 } | |
2868 | |
2869 | |
2870 void LIR_Assembler::align_call(LIR_Code code) { | |
2871 if (os::is_MP()) { | |
2872 // make sure that the displacement word of the call ends up word aligned | |
2873 int offset = __ offset(); | |
2874 switch (code) { | |
2875 case lir_static_call: | |
2876 case lir_optvirtual_call: | |
1295 | 2877 case lir_dynamic_call: |
0 | 2878 offset += NativeCall::displacement_offset; |
2879 break; | |
2880 case lir_icvirtual_call: | |
2881 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; | |
2882 break; | |
2883 case lir_virtual_call: // currently, sparc-specific for niagara | |
2884 default: ShouldNotReachHere(); | |
2885 } | |
2886 while (offset++ % BytesPerWord != 0) { | |
2887 __ nop(); | |
2888 } | |
2889 } | |
2890 } | |
2891 | |
2892 | |
1295 | 2893 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { |
0 | 2894 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, |
2895 "must be aligned"); | |
1295 | 2896 __ call(AddressLiteral(op->addr(), rtype)); |
1564 | 2897 add_call_info(code_offset(), op->info()); |
0 | 2898 } |
2899 | |
2900 | |
1295 | 2901 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { |
0 | 2902 RelocationHolder rh = virtual_call_Relocation::spec(pc()); |
2903 __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); | |
2904 assert(!os::is_MP() || | |
2905 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, | |
2906 "must be aligned"); | |
1295 | 2907 __ call(AddressLiteral(op->addr(), rh)); |
1564 | 2908 add_call_info(code_offset(), op->info()); |
0 | 2909 } |
2910 | |
2911 | |
2912 /* Currently, vtable-dispatch is only enabled for sparc platforms */ | |
1295 | 2913 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { |
0 | 2914 ShouldNotReachHere(); |
2915 } | |
2916 | |
1295 | 2917 |
0 | 2918 void LIR_Assembler::emit_static_call_stub() { |
2919 address call_pc = __ pc(); | |
2920 address stub = __ start_a_stub(call_stub_size); | |
2921 if (stub == NULL) { | |
2922 bailout("static call stub overflow"); | |
2923 return; | |
2924 } | |
2925 | |
2926 int start = __ offset(); | |
2927 if (os::is_MP()) { | |
2928 // make sure that the displacement word of the call ends up word aligned | |
2929 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; | |
2930 while (offset++ % BytesPerWord != 0) { | |
2931 __ nop(); | |
2932 } | |
2933 } | |
2934 __ relocate(static_stub_Relocation::spec(call_pc)); | |
2935 __ movoop(rbx, (jobject)NULL); | |
2936 // must be set to -1 at code generation time | |
2937 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); | |
304 | 2938 // On 64bit this will die since it will take a movq & jmp, must be only a jmp |
2939 __ jump(RuntimeAddress(__ pc())); | |
0 | 2940 |
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2941 assert(__ offset() - start <= call_stub_size, "stub too big"); |
0 | 2942 __ end_a_stub(); |
2943 } | |
2944 | |
2945 | |
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2946 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { |
0 | 2947 assert(exceptionOop->as_register() == rax, "must match"); |
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2948 assert(exceptionPC->as_register() == rdx, "must match"); |
0 | 2949 |
2950 // exception object is not added to oop map by LinearScan | |
2951 // (LinearScan assumes that no oops are in fixed registers) | |
2952 info->add_register_oop(exceptionOop); | |
2953 Runtime1::StubID unwind_id; | |
2954 | |
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2955 // get current pc information |
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2956 // pc is only needed if the method has an exception handler, the unwind code does not need it. |
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2957 int pc_for_athrow_offset = __ offset(); |
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2958 InternalAddress pc_for_athrow(__ pc()); |
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2959 __ lea(exceptionPC->as_register(), pc_for_athrow); |
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2960 add_call_info(pc_for_athrow_offset, info); // for exception handler |
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2961 |
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2962 __ verify_not_null_oop(rax); |
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2963 // search an exception handler (rax: exception oop, rdx: throwing pc) |
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2964 if (compilation()->has_fpu_code()) { |
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2965 unwind_id = Runtime1::handle_exception_id; |
0 | 2966 } else { |
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2967 unwind_id = Runtime1::handle_exception_nofpu_id; |
0 | 2968 } |
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2969 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); |
0 | 2970 |
2971 // enough room for two byte trap | |
2972 __ nop(); | |
2973 } | |
2974 | |
2975 | |
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2976 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { |
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2977 assert(exceptionOop->as_register() == rax, "must match"); |
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2978 |
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2979 __ jmp(_unwind_handler_entry); |
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2980 } |
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2981 |
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2982 |
0 | 2983 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { |
2984 | |
2985 // optimized version for linear scan: | |
2986 // * count must be already in ECX (guaranteed by LinearScan) | |
2987 // * left and dest must be equal | |
2988 // * tmp must be unused | |
2989 assert(count->as_register() == SHIFT_count, "count must be in ECX"); | |
2990 assert(left == dest, "left and dest must be equal"); | |
2991 assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); | |
2992 | |
2993 if (left->is_single_cpu()) { | |
2994 Register value = left->as_register(); | |
2995 assert(value != SHIFT_count, "left cannot be ECX"); | |
2996 | |
2997 switch (code) { | |
2998 case lir_shl: __ shll(value); break; | |
2999 case lir_shr: __ sarl(value); break; | |
3000 case lir_ushr: __ shrl(value); break; | |
3001 default: ShouldNotReachHere(); | |
3002 } | |
3003 } else if (left->is_double_cpu()) { | |
3004 Register lo = left->as_register_lo(); | |
3005 Register hi = left->as_register_hi(); | |
3006 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); | |
304 | 3007 #ifdef _LP64 |
3008 switch (code) { | |
3009 case lir_shl: __ shlptr(lo); break; | |
3010 case lir_shr: __ sarptr(lo); break; | |
3011 case lir_ushr: __ shrptr(lo); break; | |
3012 default: ShouldNotReachHere(); | |
3013 } | |
3014 #else | |
0 | 3015 |
3016 switch (code) { | |
3017 case lir_shl: __ lshl(hi, lo); break; | |
3018 case lir_shr: __ lshr(hi, lo, true); break; | |
3019 case lir_ushr: __ lshr(hi, lo, false); break; | |
3020 default: ShouldNotReachHere(); | |
3021 } | |
304 | 3022 #endif // LP64 |
0 | 3023 } else { |
3024 ShouldNotReachHere(); | |
3025 } | |
3026 } | |
3027 | |
3028 | |
3029 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { | |
3030 if (dest->is_single_cpu()) { | |
3031 // first move left into dest so that left is not destroyed by the shift | |
3032 Register value = dest->as_register(); | |
3033 count = count & 0x1F; // Java spec | |
3034 | |
3035 move_regs(left->as_register(), value); | |
3036 switch (code) { | |
3037 case lir_shl: __ shll(value, count); break; | |
3038 case lir_shr: __ sarl(value, count); break; | |
3039 case lir_ushr: __ shrl(value, count); break; | |
3040 default: ShouldNotReachHere(); | |
3041 } | |
3042 } else if (dest->is_double_cpu()) { | |
304 | 3043 #ifndef _LP64 |
0 | 3044 Unimplemented(); |
304 | 3045 #else |
3046 // first move left into dest so that left is not destroyed by the shift | |
3047 Register value = dest->as_register_lo(); | |
3048 count = count & 0x1F; // Java spec | |
3049 | |
3050 move_regs(left->as_register_lo(), value); | |
3051 switch (code) { | |
3052 case lir_shl: __ shlptr(value, count); break; | |
3053 case lir_shr: __ sarptr(value, count); break; | |
3054 case lir_ushr: __ shrptr(value, count); break; | |
3055 default: ShouldNotReachHere(); | |
3056 } | |
3057 #endif // _LP64 | |
0 | 3058 } else { |
3059 ShouldNotReachHere(); | |
3060 } | |
3061 } | |
3062 | |
3063 | |
3064 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { | |
3065 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3066 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3067 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 3068 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); |
0 | 3069 } |
3070 | |
3071 | |
3072 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { | |
3073 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3074 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3075 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 3076 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); |
0 | 3077 } |
3078 | |
3079 | |
3080 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { | |
3081 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3082 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3083 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
3084 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); | |
3085 } | |
3086 | |
3087 | |
3088 // This code replaces a call to arraycopy; no exception may | |
3089 // be thrown in this code, they must be thrown in the System.arraycopy | |
3090 // activation frame; we could save some checks if this would not be the case | |
3091 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { | |
3092 ciArrayKlass* default_type = op->expected_type(); | |
3093 Register src = op->src()->as_register(); | |
3094 Register dst = op->dst()->as_register(); | |
3095 Register src_pos = op->src_pos()->as_register(); | |
3096 Register dst_pos = op->dst_pos()->as_register(); | |
3097 Register length = op->length()->as_register(); | |
3098 Register tmp = op->tmp()->as_register(); | |
3099 | |
3100 CodeStub* stub = op->stub(); | |
3101 int flags = op->flags(); | |
3102 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; | |
3103 if (basic_type == T_ARRAY) basic_type = T_OBJECT; | |
3104 | |
2446 | 3105 // if we don't know anything, just go through the generic arraycopy |
0 | 3106 if (default_type == NULL) { |
3107 Label done; | |
3108 // save outgoing arguments on stack in case call to System.arraycopy is needed | |
3109 // HACK ALERT. This code used to push the parameters in a hardwired fashion | |
3110 // for interpreter calling conventions. Now we have to do it in new style conventions. | |
3111 // For the moment until C1 gets the new register allocator I just force all the | |
3112 // args to the right place (except the register args) and then on the back side | |
3113 // reload the register args properly if we go slow path. Yuck | |
3114 | |
3115 // These are proper for the calling convention | |
3116 | |
3117 store_parameter(length, 2); | |
3118 store_parameter(dst_pos, 1); | |
3119 store_parameter(dst, 0); | |
3120 | |
3121 // these are just temporary placements until we need to reload | |
3122 store_parameter(src_pos, 3); | |
3123 store_parameter(src, 4); | |
304 | 3124 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) |
3125 | |
2446 | 3126 address C_entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); |
3127 | |
3128 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
0 | 3129 |
3130 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint | |
304 | 3131 #ifdef _LP64 |
3132 // The arguments are in java calling convention so we can trivially shift them to C | |
3133 // convention | |
3134 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3135 __ mov(c_rarg0, j_rarg0); | |
3136 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3137 __ mov(c_rarg1, j_rarg1); | |
3138 assert_different_registers(c_rarg2, j_rarg3, j_rarg4); | |
3139 __ mov(c_rarg2, j_rarg2); | |
3140 assert_different_registers(c_rarg3, j_rarg4); | |
3141 __ mov(c_rarg3, j_rarg3); | |
3142 #ifdef _WIN64 | |
3143 // Allocate abi space for args but be sure to keep stack aligned | |
3144 __ subptr(rsp, 6*wordSize); | |
3145 store_parameter(j_rarg4, 4); | |
2446 | 3146 if (copyfunc_addr == NULL) { // Use C version if stub was not generated |
3147 __ call(RuntimeAddress(C_entry)); | |
3148 } else { | |
3149 #ifndef PRODUCT | |
3150 if (PrintC1Statistics) { | |
3151 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); | |
3152 } | |
3153 #endif | |
3154 __ call(RuntimeAddress(copyfunc_addr)); | |
3155 } | |
304 | 3156 __ addptr(rsp, 6*wordSize); |
3157 #else | |
3158 __ mov(c_rarg4, j_rarg4); | |
2446 | 3159 if (copyfunc_addr == NULL) { // Use C version if stub was not generated |
3160 __ call(RuntimeAddress(C_entry)); | |
3161 } else { | |
3162 #ifndef PRODUCT | |
3163 if (PrintC1Statistics) { | |
3164 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); | |
3165 } | |
3166 #endif | |
3167 __ call(RuntimeAddress(copyfunc_addr)); | |
3168 } | |
304 | 3169 #endif // _WIN64 |
3170 #else | |
3171 __ push(length); | |
3172 __ push(dst_pos); | |
3173 __ push(dst); | |
3174 __ push(src_pos); | |
3175 __ push(src); | |
2446 | 3176 |
3177 if (copyfunc_addr == NULL) { // Use C version if stub was not generated | |
3178 __ call_VM_leaf(C_entry, 5); // removes pushed parameter from the stack | |
3179 } else { | |
3180 #ifndef PRODUCT | |
3181 if (PrintC1Statistics) { | |
3182 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); | |
3183 } | |
3184 #endif | |
3185 __ call_VM_leaf(copyfunc_addr, 5); // removes pushed parameter from the stack | |
3186 } | |
0 | 3187 |
304 | 3188 #endif // _LP64 |
3189 | |
0 | 3190 __ cmpl(rax, 0); |
3191 __ jcc(Assembler::equal, *stub->continuation()); | |
3192 | |
2446 | 3193 if (copyfunc_addr != NULL) { |
3194 __ mov(tmp, rax); | |
3195 __ xorl(tmp, -1); | |
3196 } | |
3197 | |
0 | 3198 // Reload values from the stack so they are where the stub |
3199 // expects them. | |
304 | 3200 __ movptr (dst, Address(rsp, 0*BytesPerWord)); |
3201 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); | |
3202 __ movptr (length, Address(rsp, 2*BytesPerWord)); | |
3203 __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); | |
3204 __ movptr (src, Address(rsp, 4*BytesPerWord)); | |
2446 | 3205 |
3206 if (copyfunc_addr != NULL) { | |
3207 __ subl(length, tmp); | |
3208 __ addl(src_pos, tmp); | |
3209 __ addl(dst_pos, tmp); | |
3210 } | |
0 | 3211 __ jmp(*stub->entry()); |
3212 | |
3213 __ bind(*stub->continuation()); | |
3214 return; | |
3215 } | |
3216 | |
3217 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); | |
3218 | |
29
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3219 int elem_size = type2aelembytes(basic_type); |
0 | 3220 int shift_amount; |
3221 Address::ScaleFactor scale; | |
3222 | |
3223 switch (elem_size) { | |
3224 case 1 : | |
3225 shift_amount = 0; | |
3226 scale = Address::times_1; | |
3227 break; | |
3228 case 2 : | |
3229 shift_amount = 1; | |
3230 scale = Address::times_2; | |
3231 break; | |
3232 case 4 : | |
3233 shift_amount = 2; | |
3234 scale = Address::times_4; | |
3235 break; | |
3236 case 8 : | |
3237 shift_amount = 3; | |
3238 scale = Address::times_8; | |
3239 break; | |
3240 default: | |
3241 ShouldNotReachHere(); | |
3242 } | |
3243 | |
3244 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); | |
3245 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); | |
3246 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); | |
3247 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); | |
3248 | |
304 | 3249 // length and pos's are all sign extended at this point on 64bit |
3250 | |
0 | 3251 // test for NULL |
3252 if (flags & LIR_OpArrayCopy::src_null_check) { | |
304 | 3253 __ testptr(src, src); |
0 | 3254 __ jcc(Assembler::zero, *stub->entry()); |
3255 } | |
3256 if (flags & LIR_OpArrayCopy::dst_null_check) { | |
304 | 3257 __ testptr(dst, dst); |
0 | 3258 __ jcc(Assembler::zero, *stub->entry()); |
3259 } | |
3260 | |
3261 // check if negative | |
3262 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { | |
3263 __ testl(src_pos, src_pos); | |
3264 __ jcc(Assembler::less, *stub->entry()); | |
3265 } | |
3266 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { | |
3267 __ testl(dst_pos, dst_pos); | |
3268 __ jcc(Assembler::less, *stub->entry()); | |
3269 } | |
3270 | |
3271 if (flags & LIR_OpArrayCopy::src_range_check) { | |
304 | 3272 __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); |
0 | 3273 __ cmpl(tmp, src_length_addr); |
3274 __ jcc(Assembler::above, *stub->entry()); | |
3275 } | |
3276 if (flags & LIR_OpArrayCopy::dst_range_check) { | |
304 | 3277 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); |
0 | 3278 __ cmpl(tmp, dst_length_addr); |
3279 __ jcc(Assembler::above, *stub->entry()); | |
3280 } | |
3281 | |
2446 | 3282 if (flags & LIR_OpArrayCopy::length_positive_check) { |
3283 __ testl(length, length); | |
3284 __ jcc(Assembler::less, *stub->entry()); | |
3285 __ jcc(Assembler::zero, *stub->continuation()); | |
3286 } | |
3287 | |
3288 #ifdef _LP64 | |
3289 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null | |
3290 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null | |
3291 #endif | |
3292 | |
0 | 3293 if (flags & LIR_OpArrayCopy::type_check) { |
2446 | 3294 // We don't know the array types are compatible |
3295 if (basic_type != T_OBJECT) { | |
3296 // Simple test for basic type arrays | |
3297 if (UseCompressedOops) { | |
3298 __ movl(tmp, src_klass_addr); | |
3299 __ cmpl(tmp, dst_klass_addr); | |
3300 } else { | |
3301 __ movptr(tmp, src_klass_addr); | |
3302 __ cmpptr(tmp, dst_klass_addr); | |
3303 } | |
3304 __ jcc(Assembler::notEqual, *stub->entry()); | |
2002 | 3305 } else { |
2446 | 3306 // For object arrays, if src is a sub class of dst then we can |
3307 // safely do the copy. | |
3308 Label cont, slow; | |
3309 | |
3310 __ push(src); | |
3311 __ push(dst); | |
3312 | |
3313 __ load_klass(src, src); | |
3314 __ load_klass(dst, dst); | |
3315 | |
3316 __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, NULL); | |
3317 | |
3318 __ push(src); | |
3319 __ push(dst); | |
3320 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); | |
3321 __ pop(dst); | |
3322 __ pop(src); | |
3323 | |
3324 __ cmpl(src, 0); | |
3325 __ jcc(Assembler::notEqual, cont); | |
3326 | |
3327 __ bind(slow); | |
3328 __ pop(dst); | |
3329 __ pop(src); | |
3330 | |
3331 address copyfunc_addr = StubRoutines::checkcast_arraycopy(); | |
3332 if (copyfunc_addr != NULL) { // use stub if available | |
3333 // src is not a sub class of dst so we have to do a | |
3334 // per-element check. | |
3335 | |
3336 int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray; | |
3337 if ((flags & mask) != mask) { | |
3338 // Check that at least both of them object arrays. | |
3339 assert(flags & mask, "one of the two should be known to be an object array"); | |
3340 | |
3341 if (!(flags & LIR_OpArrayCopy::src_objarray)) { | |
3342 __ load_klass(tmp, src); | |
3343 } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) { | |
3344 __ load_klass(tmp, dst); | |
3345 } | |
3346 int lh_offset = klassOopDesc::header_size() * HeapWordSize + | |
3347 Klass::layout_helper_offset_in_bytes(); | |
3348 Address klass_lh_addr(tmp, lh_offset); | |
3349 jint objArray_lh = Klass::array_layout_helper(T_OBJECT); | |
3350 __ cmpl(klass_lh_addr, objArray_lh); | |
3351 __ jcc(Assembler::notEqual, *stub->entry()); | |
3352 } | |
3353 | |
3354 #ifndef _LP64 | |
3355 // save caller save registers | |
3356 store_parameter(rax, 2); | |
3357 store_parameter(rcx, 1); | |
3358 store_parameter(rdx, 0); | |
3359 | |
3360 __ movptr(tmp, dst_klass_addr); | |
3361 __ movptr(tmp, Address(tmp, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); | |
3362 __ push(tmp); | |
3363 __ movl(tmp, Address(tmp, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc))); | |
3364 __ push(tmp); | |
3365 __ push(length); | |
3366 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3367 __ push(tmp); | |
3368 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3369 __ push(tmp); | |
3370 | |
3371 __ call_VM_leaf(copyfunc_addr, 5); | |
3372 #else | |
3373 __ movl2ptr(length, length); //higher 32bits must be null | |
3374 | |
3375 // save caller save registers: copy them to callee save registers | |
3376 __ mov(rbx, rdx); | |
3377 __ mov(r13, r8); | |
3378 __ mov(r14, r9); | |
3379 #ifndef _WIN64 | |
3380 store_parameter(rsi, 1); | |
3381 store_parameter(rcx, 0); | |
3382 // on WIN64 other incoming parameters are in rdi and rsi saved | |
3383 // across the call | |
3384 #endif | |
3385 | |
3386 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3387 assert_different_registers(c_rarg0, dst, dst_pos, length); | |
3388 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3389 assert_different_registers(c_rarg1, dst, length); | |
3390 | |
3391 __ mov(c_rarg2, length); | |
3392 assert_different_registers(c_rarg2, dst); | |
3393 | |
3394 #ifdef _WIN64 | |
3395 // Allocate abi space for args but be sure to keep stack aligned | |
3396 __ subptr(rsp, 6*wordSize); | |
3397 __ load_klass(c_rarg3, dst); | |
3398 __ movptr(c_rarg3, Address(c_rarg3, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); | |
3399 store_parameter(c_rarg3, 4); | |
3400 __ movl(c_rarg3, Address(c_rarg3, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc))); | |
3401 __ call(RuntimeAddress(copyfunc_addr)); | |
3402 __ addptr(rsp, 6*wordSize); | |
3403 #else | |
3404 __ load_klass(c_rarg4, dst); | |
3405 __ movptr(c_rarg4, Address(c_rarg4, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); | |
3406 __ movl(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc))); | |
3407 __ call(RuntimeAddress(copyfunc_addr)); | |
3408 #endif | |
3409 | |
3410 #endif | |
3411 | |
3412 #ifndef PRODUCT | |
3413 if (PrintC1Statistics) { | |
3414 Label failed; | |
3415 __ testl(rax, rax); | |
3416 __ jcc(Assembler::notZero, failed); | |
3417 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt)); | |
3418 __ bind(failed); | |
3419 } | |
3420 #endif | |
3421 | |
3422 __ testl(rax, rax); | |
3423 __ jcc(Assembler::zero, *stub->continuation()); | |
3424 | |
3425 #ifndef PRODUCT | |
3426 if (PrintC1Statistics) { | |
3427 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt)); | |
3428 } | |
3429 #endif | |
3430 | |
3431 __ mov(tmp, rax); | |
3432 | |
3433 __ xorl(tmp, -1); | |
3434 | |
3435 #ifndef _LP64 | |
3436 // restore caller save registers | |
3437 assert_different_registers(tmp, rdx, rcx, rax); // result of stub will be lost | |
3438 __ movptr(rdx, Address(rsp, 0*BytesPerWord)); | |
3439 __ movptr(rcx, Address(rsp, 1*BytesPerWord)); | |
3440 __ movptr(rax, Address(rsp, 2*BytesPerWord)); | |
3441 #else | |
3442 // restore caller save registers | |
3443 __ mov(rdx, rbx); | |
3444 __ mov(r8, r13); | |
3445 __ mov(r9, r14); | |
3446 #ifndef _WIN64 | |
3447 assert_different_registers(tmp, rdx, r8, r9, rcx, rsi); // result of stub will be lost | |
3448 __ movptr(rcx, Address(rsp, 0*BytesPerWord)); | |
3449 __ movptr(rsi, Address(rsp, 1*BytesPerWord)); | |
3450 #else | |
3451 assert_different_registers(tmp, rdx, r8, r9); // result of stub will be lost | |
3452 #endif | |
3453 #endif | |
3454 | |
3455 __ subl(length, tmp); | |
3456 __ addl(src_pos, tmp); | |
3457 __ addl(dst_pos, tmp); | |
3458 } | |
3459 | |
3460 __ jmp(*stub->entry()); | |
3461 | |
3462 __ bind(cont); | |
3463 __ pop(dst); | |
3464 __ pop(src); | |
2002 | 3465 } |
0 | 3466 } |
3467 | |
3468 #ifdef ASSERT | |
3469 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { | |
3470 // Sanity check the known type with the incoming class. For the | |
3471 // primitive case the types must match exactly with src.klass and | |
3472 // dst.klass each exactly matching the default type. For the | |
3473 // object array case, if no type check is needed then either the | |
3474 // dst type is exactly the expected type and the src type is a | |
3475 // subtype which we can't check or src is the same array as dst | |
3476 // but not necessarily exactly of type default_type. | |
3477 Label known_ok, halt; | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
780
diff
changeset
|
3478 __ movoop(tmp, default_type->constant_encoding()); |
2002 | 3479 #ifdef _LP64 |
3480 if (UseCompressedOops) { | |
3481 __ encode_heap_oop(tmp); | |
3482 } | |
3483 #endif | |
3484 | |
0 | 3485 if (basic_type != T_OBJECT) { |
2002 | 3486 |
3487 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); | |
3488 else __ cmpptr(tmp, dst_klass_addr); | |
0 | 3489 __ jcc(Assembler::notEqual, halt); |
2002 | 3490 if (UseCompressedOops) __ cmpl(tmp, src_klass_addr); |
3491 else __ cmpptr(tmp, src_klass_addr); | |
0 | 3492 __ jcc(Assembler::equal, known_ok); |
3493 } else { | |
2002 | 3494 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); |
3495 else __ cmpptr(tmp, dst_klass_addr); | |
0 | 3496 __ jcc(Assembler::equal, known_ok); |
304 | 3497 __ cmpptr(src, dst); |
0 | 3498 __ jcc(Assembler::equal, known_ok); |
3499 } | |
3500 __ bind(halt); | |
3501 __ stop("incorrect type information in arraycopy"); | |
3502 __ bind(known_ok); | |
3503 } | |
3504 #endif | |
3505 | |
2446 | 3506 #ifndef PRODUCT |
3507 if (PrintC1Statistics) { | |
3508 __ incrementl(ExternalAddress(Runtime1::arraycopy_count_address(basic_type))); | |
304 | 3509 } |
2446 | 3510 #endif |
304 | 3511 |
3512 #ifdef _LP64 | |
3513 assert_different_registers(c_rarg0, dst, dst_pos, length); | |
3514 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3515 assert_different_registers(c_rarg1, length); | |
3516 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
3517 __ mov(c_rarg2, length); | |
3518 | |
3519 #else | |
3520 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
0 | 3521 store_parameter(tmp, 0); |
304 | 3522 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
0 | 3523 store_parameter(tmp, 1); |
3524 store_parameter(length, 2); | |
304 | 3525 #endif // _LP64 |
2446 | 3526 |
3527 bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0; | |
3528 bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0; | |
3529 const char *name; | |
3530 address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false); | |
3531 __ call_VM_leaf(entry, 0); | |
0 | 3532 |
3533 __ bind(*stub->continuation()); | |
3534 } | |
3535 | |
3536 | |
3537 void LIR_Assembler::emit_lock(LIR_OpLock* op) { | |
3538 Register obj = op->obj_opr()->as_register(); // may not be an oop | |
3539 Register hdr = op->hdr_opr()->as_register(); | |
3540 Register lock = op->lock_opr()->as_register(); | |
3541 if (!UseFastLocking) { | |
3542 __ jmp(*op->stub()->entry()); | |
3543 } else if (op->code() == lir_lock) { | |
3544 Register scratch = noreg; | |
3545 if (UseBiasedLocking) { | |
3546 scratch = op->scratch_opr()->as_register(); | |
3547 } | |
3548 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3549 // add debug info for NullPointerException only if one is possible | |
3550 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); | |
3551 if (op->info() != NULL) { | |
3552 add_debug_info_for_null_check(null_check_offset, op->info()); | |
3553 } | |
3554 // done | |
3555 } else if (op->code() == lir_unlock) { | |
3556 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3557 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); | |
3558 } else { | |
3559 Unimplemented(); | |
3560 } | |
3561 __ bind(*op->stub()->continuation()); | |
3562 } | |
3563 | |
3564 | |
3565 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { | |
3566 ciMethod* method = op->profiled_method(); | |
3567 int bci = op->profiled_bci(); | |
3568 | |
3569 // Update counter for all call types | |
2007
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
3570 ciMethodData* md = method->method_data_or_null(); |
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
3571 assert(md != NULL, "Sanity"); |
0 | 3572 ciProfileData* data = md->bci_to_data(bci); |
3573 assert(data->is_CounterData(), "need CounterData for calls"); | |
3574 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); | |
3575 Register mdo = op->mdo()->as_register(); | |
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
780
diff
changeset
|
3576 __ movoop(mdo, md->constant_encoding()); |
0 | 3577 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); |
3578 Bytecodes::Code bc = method->java_code_at_bci(bci); | |
3579 // Perform additional virtual call profiling for invokevirtual and | |
3580 // invokeinterface bytecodes | |
3581 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && | |
1783 | 3582 C1ProfileVirtualCalls) { |
0 | 3583 assert(op->recv()->is_single_cpu(), "recv must be allocated"); |
3584 Register recv = op->recv()->as_register(); | |
3585 assert_different_registers(mdo, recv); | |
3586 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); | |
3587 ciKlass* known_klass = op->known_holder(); | |
1783 | 3588 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { |
0 | 3589 // We know the type that will be seen at this call site; we can |
3590 // statically update the methodDataOop rather than needing to do | |
3591 // dynamic tests on the receiver type | |
3592 | |
3593 // NOTE: we should probably put a lock around this search to | |
3594 // avoid collisions by concurrent compilations | |
3595 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; | |
3596 uint i; | |
3597 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3598 ciKlass* receiver = vc_data->receiver(i); | |
3599 if (known_klass->equals(receiver)) { | |
3600 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
1783 | 3601 __ addptr(data_addr, DataLayout::counter_increment); |
0 | 3602 return; |
3603 } | |
3604 } | |
3605 | |
3606 // Receiver type not found in profile data; select an empty slot | |
3607 | |
3608 // Note that this is less efficient than it should be because it | |
3609 // always does a write to the receiver part of the | |
3610 // VirtualCallData rather than just the first time | |
3611 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3612 ciKlass* receiver = vc_data->receiver(i); | |
3613 if (receiver == NULL) { | |
3614 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
780
diff
changeset
|
3615 __ movoop(recv_addr, known_klass->constant_encoding()); |
0 | 3616 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); |
1783 | 3617 __ addptr(data_addr, DataLayout::counter_increment); |
0 | 3618 return; |
3619 } | |
3620 } | |
3621 } else { | |
2002 | 3622 __ load_klass(recv, recv); |
0 | 3623 Label update_done; |
1783 | 3624 type_profile_helper(mdo, md, data, recv, &update_done); |
1206
87684f1a88b5
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kvn
parents:
1204
diff
changeset
|
3625 // Receiver did not match any saved receiver and there is no empty row for it. |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1206
diff
changeset
|
3626 // Increment total counter to indicate polymorphic case. |
1783 | 3627 __ addptr(counter_addr, DataLayout::counter_increment); |
0 | 3628 |
3629 __ bind(update_done); | |
3630 } | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1204
diff
changeset
|
3631 } else { |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
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1204
diff
changeset
|
3632 // Static call |
1783 | 3633 __ addptr(counter_addr, DataLayout::counter_increment); |
0 | 3634 } |
3635 } | |
3636 | |
3637 void LIR_Assembler::emit_delay(LIR_OpDelay*) { | |
3638 Unimplemented(); | |
3639 } | |
3640 | |
3641 | |
3642 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { | |
304 | 3643 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); |
0 | 3644 } |
3645 | |
3646 | |
3647 void LIR_Assembler::align_backward_branch_target() { | |
3648 __ align(BytesPerWord); | |
3649 } | |
3650 | |
3651 | |
3652 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { | |
3653 if (left->is_single_cpu()) { | |
3654 __ negl(left->as_register()); | |
3655 move_regs(left->as_register(), dest->as_register()); | |
3656 | |
3657 } else if (left->is_double_cpu()) { | |
3658 Register lo = left->as_register_lo(); | |
304 | 3659 #ifdef _LP64 |
3660 Register dst = dest->as_register_lo(); | |
3661 __ movptr(dst, lo); | |
3662 __ negptr(dst); | |
3663 #else | |
0 | 3664 Register hi = left->as_register_hi(); |
3665 __ lneg(hi, lo); | |
3666 if (dest->as_register_lo() == hi) { | |
3667 assert(dest->as_register_hi() != lo, "destroying register"); | |
3668 move_regs(hi, dest->as_register_hi()); | |
3669 move_regs(lo, dest->as_register_lo()); | |
3670 } else { | |
3671 move_regs(lo, dest->as_register_lo()); | |
3672 move_regs(hi, dest->as_register_hi()); | |
3673 } | |
304 | 3674 #endif // _LP64 |
0 | 3675 |
3676 } else if (dest->is_single_xmm()) { | |
3677 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { | |
3678 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); | |
3679 } | |
3680 __ xorps(dest->as_xmm_float_reg(), | |
3681 ExternalAddress((address)float_signflip_pool)); | |
3682 | |
3683 } else if (dest->is_double_xmm()) { | |
3684 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { | |
3685 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); | |
3686 } | |
3687 __ xorpd(dest->as_xmm_double_reg(), | |
3688 ExternalAddress((address)double_signflip_pool)); | |
3689 | |
3690 } else if (left->is_single_fpu() || left->is_double_fpu()) { | |
3691 assert(left->fpu() == 0, "arg must be on TOS"); | |
3692 assert(dest->fpu() == 0, "dest must be TOS"); | |
3693 __ fchs(); | |
3694 | |
3695 } else { | |
3696 ShouldNotReachHere(); | |
3697 } | |
3698 } | |
3699 | |
3700 | |
3701 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { | |
3702 assert(addr->is_address() && dest->is_register(), "check"); | |
304 | 3703 Register reg; |
3704 reg = dest->as_pointer_register(); | |
3705 __ lea(reg, as_Address(addr->as_address_ptr())); | |
0 | 3706 } |
3707 | |
3708 | |
3709 | |
3710 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { | |
3711 assert(!tmp->is_valid(), "don't need temporary"); | |
3712 __ call(RuntimeAddress(dest)); | |
3713 if (info != NULL) { | |
3714 add_call_info_here(info); | |
3715 } | |
3716 } | |
3717 | |
3718 | |
3719 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { | |
3720 assert(type == T_LONG, "only for volatile long fields"); | |
3721 | |
3722 if (info != NULL) { | |
3723 add_debug_info_for_null_check_here(info); | |
3724 } | |
3725 | |
3726 if (src->is_double_xmm()) { | |
3727 if (dest->is_double_cpu()) { | |
304 | 3728 #ifdef _LP64 |
3729 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); | |
3730 #else | |
3731 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); | |
0 | 3732 __ psrlq(src->as_xmm_double_reg(), 32); |
304 | 3733 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); |
3734 #endif // _LP64 | |
0 | 3735 } else if (dest->is_double_stack()) { |
3736 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); | |
3737 } else if (dest->is_address()) { | |
3738 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); | |
3739 } else { | |
3740 ShouldNotReachHere(); | |
3741 } | |
3742 | |
3743 } else if (dest->is_double_xmm()) { | |
3744 if (src->is_double_stack()) { | |
3745 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); | |
3746 } else if (src->is_address()) { | |
3747 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); | |
3748 } else { | |
3749 ShouldNotReachHere(); | |
3750 } | |
3751 | |
3752 } else if (src->is_double_fpu()) { | |
3753 assert(src->fpu_regnrLo() == 0, "must be TOS"); | |
3754 if (dest->is_double_stack()) { | |
3755 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); | |
3756 } else if (dest->is_address()) { | |
3757 __ fistp_d(as_Address(dest->as_address_ptr())); | |
3758 } else { | |
3759 ShouldNotReachHere(); | |
3760 } | |
3761 | |
3762 } else if (dest->is_double_fpu()) { | |
3763 assert(dest->fpu_regnrLo() == 0, "must be TOS"); | |
3764 if (src->is_double_stack()) { | |
3765 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); | |
3766 } else if (src->is_address()) { | |
3767 __ fild_d(as_Address(src->as_address_ptr())); | |
3768 } else { | |
3769 ShouldNotReachHere(); | |
3770 } | |
3771 } else { | |
3772 ShouldNotReachHere(); | |
3773 } | |
3774 } | |
3775 | |
3776 | |
3777 void LIR_Assembler::membar() { | |
304 | 3778 // QQQ sparc TSO uses this, |
3779 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); | |
0 | 3780 } |
3781 | |
3782 void LIR_Assembler::membar_acquire() { | |
3783 // No x86 machines currently require load fences | |
3784 // __ load_fence(); | |
3785 } | |
3786 | |
3787 void LIR_Assembler::membar_release() { | |
3788 // No x86 machines currently require store fences | |
3789 // __ store_fence(); | |
3790 } | |
3791 | |
3792 void LIR_Assembler::get_thread(LIR_Opr result_reg) { | |
3793 assert(result_reg->is_register(), "check"); | |
304 | 3794 #ifdef _LP64 |
3795 // __ get_thread(result_reg->as_register_lo()); | |
3796 __ mov(result_reg->as_register(), r15_thread); | |
3797 #else | |
0 | 3798 __ get_thread(result_reg->as_register()); |
304 | 3799 #endif // _LP64 |
0 | 3800 } |
3801 | |
3802 | |
3803 void LIR_Assembler::peephole(LIR_List*) { | |
3804 // do nothing for now | |
3805 } | |
3806 | |
3807 | |
3808 #undef __ |