Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 1295:3cf667df43ef
6919934: JSR 292 needs to support x86 C1
Summary: This implements JSR 292 support for C1 x86.
Reviewed-by: never, jrose, kvn
author | twisti |
---|---|
date | Tue, 09 Mar 2010 20:16:19 +0100 |
parents | 7b4415a18c8a |
children | c466efa608d5 |
rev | line source |
---|---|
0 | 1 /* |
1204 | 2 * Copyright 2000-2010 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_c1_LIRAssembler_x86.cpp.incl" | |
27 | |
28 | |
29 // These masks are used to provide 128-bit aligned bitmasks to the XMM | |
30 // instructions, to allow sign-masking or sign-bit flipping. They allow | |
31 // fast versions of NegF/NegD and AbsF/AbsD. | |
32 | |
33 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
34 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
35 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
36 // of 128-bits operands for SSE instructions. | |
37 jlong *operand = (jlong*)(((long)adr)&((long)(~0xF))); | |
38 // Store the value to a 128-bits operand. | |
39 operand[0] = lo; | |
40 operand[1] = hi; | |
41 return operand; | |
42 } | |
43 | |
44 // Buffer for 128-bits masks used by SSE instructions. | |
45 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment) | |
46 | |
47 // Static initialization during VM startup. | |
48 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF)); | |
49 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF)); | |
50 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], CONST64(0x8000000080000000), CONST64(0x8000000080000000)); | |
51 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], CONST64(0x8000000000000000), CONST64(0x8000000000000000)); | |
52 | |
53 | |
54 | |
55 NEEDS_CLEANUP // remove this definitions ? | |
56 const Register IC_Klass = rax; // where the IC klass is cached | |
57 const Register SYNC_header = rax; // synchronization header | |
58 const Register SHIFT_count = rcx; // where count for shift operations must be | |
59 | |
60 #define __ _masm-> | |
61 | |
62 | |
63 static void select_different_registers(Register preserve, | |
64 Register extra, | |
65 Register &tmp1, | |
66 Register &tmp2) { | |
67 if (tmp1 == preserve) { | |
68 assert_different_registers(tmp1, tmp2, extra); | |
69 tmp1 = extra; | |
70 } else if (tmp2 == preserve) { | |
71 assert_different_registers(tmp1, tmp2, extra); | |
72 tmp2 = extra; | |
73 } | |
74 assert_different_registers(preserve, tmp1, tmp2); | |
75 } | |
76 | |
77 | |
78 | |
79 static void select_different_registers(Register preserve, | |
80 Register extra, | |
81 Register &tmp1, | |
82 Register &tmp2, | |
83 Register &tmp3) { | |
84 if (tmp1 == preserve) { | |
85 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
86 tmp1 = extra; | |
87 } else if (tmp2 == preserve) { | |
88 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
89 tmp2 = extra; | |
90 } else if (tmp3 == preserve) { | |
91 assert_different_registers(tmp1, tmp2, tmp3, extra); | |
92 tmp3 = extra; | |
93 } | |
94 assert_different_registers(preserve, tmp1, tmp2, tmp3); | |
95 } | |
96 | |
97 | |
98 | |
99 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { | |
100 if (opr->is_constant()) { | |
101 LIR_Const* constant = opr->as_constant_ptr(); | |
102 switch (constant->type()) { | |
103 case T_INT: { | |
104 return true; | |
105 } | |
106 | |
107 default: | |
108 return false; | |
109 } | |
110 } | |
111 return false; | |
112 } | |
113 | |
114 | |
115 LIR_Opr LIR_Assembler::receiverOpr() { | |
304 | 116 return FrameMap::receiver_opr; |
0 | 117 } |
118 | |
119 LIR_Opr LIR_Assembler::incomingReceiverOpr() { | |
120 return receiverOpr(); | |
121 } | |
122 | |
123 LIR_Opr LIR_Assembler::osrBufferPointer() { | |
304 | 124 return FrameMap::as_pointer_opr(receiverOpr()->as_register()); |
0 | 125 } |
126 | |
127 //--------------fpu register translations----------------------- | |
128 | |
129 | |
130 address LIR_Assembler::float_constant(float f) { | |
131 address const_addr = __ float_constant(f); | |
132 if (const_addr == NULL) { | |
133 bailout("const section overflow"); | |
134 return __ code()->consts()->start(); | |
135 } else { | |
136 return const_addr; | |
137 } | |
138 } | |
139 | |
140 | |
141 address LIR_Assembler::double_constant(double d) { | |
142 address const_addr = __ double_constant(d); | |
143 if (const_addr == NULL) { | |
144 bailout("const section overflow"); | |
145 return __ code()->consts()->start(); | |
146 } else { | |
147 return const_addr; | |
148 } | |
149 } | |
150 | |
151 | |
152 void LIR_Assembler::set_24bit_FPU() { | |
153 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24())); | |
154 } | |
155 | |
156 void LIR_Assembler::reset_FPU() { | |
157 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
158 } | |
159 | |
160 void LIR_Assembler::fpop() { | |
161 __ fpop(); | |
162 } | |
163 | |
164 void LIR_Assembler::fxch(int i) { | |
165 __ fxch(i); | |
166 } | |
167 | |
168 void LIR_Assembler::fld(int i) { | |
169 __ fld_s(i); | |
170 } | |
171 | |
172 void LIR_Assembler::ffree(int i) { | |
173 __ ffree(i); | |
174 } | |
175 | |
176 void LIR_Assembler::breakpoint() { | |
177 __ int3(); | |
178 } | |
179 | |
180 void LIR_Assembler::push(LIR_Opr opr) { | |
181 if (opr->is_single_cpu()) { | |
182 __ push_reg(opr->as_register()); | |
183 } else if (opr->is_double_cpu()) { | |
304 | 184 NOT_LP64(__ push_reg(opr->as_register_hi())); |
0 | 185 __ push_reg(opr->as_register_lo()); |
186 } else if (opr->is_stack()) { | |
187 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix())); | |
188 } else if (opr->is_constant()) { | |
189 LIR_Const* const_opr = opr->as_constant_ptr(); | |
190 if (const_opr->type() == T_OBJECT) { | |
191 __ push_oop(const_opr->as_jobject()); | |
192 } else if (const_opr->type() == T_INT) { | |
193 __ push_jint(const_opr->as_jint()); | |
194 } else { | |
195 ShouldNotReachHere(); | |
196 } | |
197 | |
198 } else { | |
199 ShouldNotReachHere(); | |
200 } | |
201 } | |
202 | |
203 void LIR_Assembler::pop(LIR_Opr opr) { | |
204 if (opr->is_single_cpu()) { | |
304 | 205 __ pop_reg(opr->as_register()); |
0 | 206 } else { |
207 ShouldNotReachHere(); | |
208 } | |
209 } | |
210 | |
304 | 211 bool LIR_Assembler::is_literal_address(LIR_Address* addr) { |
212 return addr->base()->is_illegal() && addr->index()->is_illegal(); | |
213 } | |
214 | |
0 | 215 //------------------------------------------- |
304 | 216 |
0 | 217 Address LIR_Assembler::as_Address(LIR_Address* addr) { |
304 | 218 return as_Address(addr, rscratch1); |
219 } | |
220 | |
221 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) { | |
0 | 222 if (addr->base()->is_illegal()) { |
223 assert(addr->index()->is_illegal(), "must be illegal too"); | |
304 | 224 AddressLiteral laddr((address)addr->disp(), relocInfo::none); |
225 if (! __ reachable(laddr)) { | |
226 __ movptr(tmp, laddr.addr()); | |
227 Address res(tmp, 0); | |
228 return res; | |
229 } else { | |
230 return __ as_Address(laddr); | |
231 } | |
0 | 232 } |
233 | |
304 | 234 Register base = addr->base()->as_pointer_register(); |
0 | 235 |
236 if (addr->index()->is_illegal()) { | |
237 return Address( base, addr->disp()); | |
304 | 238 } else if (addr->index()->is_cpu_register()) { |
239 Register index = addr->index()->as_pointer_register(); | |
0 | 240 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp()); |
241 } else if (addr->index()->is_constant()) { | |
304 | 242 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp(); |
243 assert(Assembler::is_simm32(addr_offset), "must be"); | |
0 | 244 |
245 return Address(base, addr_offset); | |
246 } else { | |
247 Unimplemented(); | |
248 return Address(); | |
249 } | |
250 } | |
251 | |
252 | |
253 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { | |
254 Address base = as_Address(addr); | |
255 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord); | |
256 } | |
257 | |
258 | |
259 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { | |
260 return as_Address(addr); | |
261 } | |
262 | |
263 | |
264 void LIR_Assembler::osr_entry() { | |
265 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); | |
266 BlockBegin* osr_entry = compilation()->hir()->osr_entry(); | |
267 ValueStack* entry_state = osr_entry->state(); | |
268 int number_of_locks = entry_state->locks_size(); | |
269 | |
270 // we jump here if osr happens with the interpreter | |
271 // state set up to continue at the beginning of the | |
272 // loop that triggered osr - in particular, we have | |
273 // the following registers setup: | |
274 // | |
275 // rcx: osr buffer | |
276 // | |
277 | |
278 // build frame | |
279 ciMethod* m = compilation()->method(); | |
280 __ build_frame(initial_frame_size_in_bytes()); | |
281 | |
282 // OSR buffer is | |
283 // | |
284 // locals[nlocals-1..0] | |
285 // monitors[0..number_of_locks] | |
286 // | |
287 // locals is a direct copy of the interpreter frame so in the osr buffer | |
288 // so first slot in the local array is the last local from the interpreter | |
289 // and last slot is local[0] (receiver) from the interpreter | |
290 // | |
291 // Similarly with locks. The first lock slot in the osr buffer is the nth lock | |
292 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock | |
293 // in the interpreter frame (the method lock if a sync method) | |
294 | |
295 // Initialize monitors in the compiled activation. | |
296 // rcx: pointer to osr buffer | |
297 // | |
298 // All other registers are dead at this point and the locals will be | |
299 // copied into place by code emitted in the IR. | |
300 | |
304 | 301 Register OSR_buf = osrBufferPointer()->as_pointer_register(); |
0 | 302 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); |
303 int monitor_offset = BytesPerWord * method()->max_locals() + | |
1060 | 304 (2 * BytesPerWord) * (number_of_locks - 1); |
305 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in | |
306 // the OSR buffer using 2 word entries: first the lock and then | |
307 // the oop. | |
0 | 308 for (int i = 0; i < number_of_locks; i++) { |
1060 | 309 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); |
0 | 310 #ifdef ASSERT |
311 // verify the interpreter's monitor has a non-null object | |
312 { | |
313 Label L; | |
1060 | 314 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD); |
0 | 315 __ jcc(Assembler::notZero, L); |
316 __ stop("locked object is NULL"); | |
317 __ bind(L); | |
318 } | |
319 #endif | |
1060 | 320 __ movptr(rbx, Address(OSR_buf, slot_offset + 0)); |
304 | 321 __ movptr(frame_map()->address_for_monitor_lock(i), rbx); |
1060 | 322 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord)); |
304 | 323 __ movptr(frame_map()->address_for_monitor_object(i), rbx); |
0 | 324 } |
325 } | |
326 } | |
327 | |
328 | |
329 // inline cache check; done before the frame is built. | |
330 int LIR_Assembler::check_icache() { | |
331 Register receiver = FrameMap::receiver_opr->as_register(); | |
332 Register ic_klass = IC_Klass; | |
304 | 333 const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9); |
0 | 334 |
335 if (!VerifyOops) { | |
336 // insert some nops so that the verified entry point is aligned on CodeEntryAlignment | |
304 | 337 while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) { |
0 | 338 __ nop(); |
339 } | |
340 } | |
341 int offset = __ offset(); | |
342 __ inline_cache_check(receiver, IC_Klass); | |
343 assert(__ offset() % CodeEntryAlignment == 0 || VerifyOops, "alignment must be correct"); | |
344 if (VerifyOops) { | |
345 // force alignment after the cache check. | |
346 // It's been verified to be aligned if !VerifyOops | |
347 __ align(CodeEntryAlignment); | |
348 } | |
349 return offset; | |
350 } | |
351 | |
352 | |
353 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) { | |
354 jobject o = NULL; | |
355 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id); | |
356 __ movoop(reg, o); | |
357 patching_epilog(patch, lir_patch_normal, reg, info); | |
358 } | |
359 | |
360 | |
361 void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register new_hdr, int monitor_no, Register exception) { | |
362 if (exception->is_valid()) { | |
363 // preserve exception | |
364 // note: the monitor_exit runtime call is a leaf routine | |
365 // and cannot block => no GC can happen | |
366 // The slow case (MonitorAccessStub) uses the first two stack slots | |
367 // ([esp+0] and [esp+4]), therefore we store the exception at [esp+8] | |
304 | 368 __ movptr (Address(rsp, 2*wordSize), exception); |
0 | 369 } |
370 | |
371 Register obj_reg = obj_opr->as_register(); | |
372 Register lock_reg = lock_opr->as_register(); | |
373 | |
374 // setup registers (lock_reg must be rax, for lock_object) | |
375 assert(obj_reg != SYNC_header && lock_reg != SYNC_header, "rax, must be available here"); | |
376 Register hdr = lock_reg; | |
377 assert(new_hdr == SYNC_header, "wrong register"); | |
378 lock_reg = new_hdr; | |
379 // compute pointer to BasicLock | |
380 Address lock_addr = frame_map()->address_for_monitor_lock(monitor_no); | |
304 | 381 __ lea(lock_reg, lock_addr); |
0 | 382 // unlock object |
383 MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, true, monitor_no); | |
384 // _slow_case_stubs->append(slow_case); | |
385 // temporary fix: must be created after exceptionhandler, therefore as call stub | |
386 _slow_case_stubs->append(slow_case); | |
387 if (UseFastLocking) { | |
388 // try inlined fast unlocking first, revert to slow locking if it fails | |
389 // note: lock_reg points to the displaced header since the displaced header offset is 0! | |
390 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
391 __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); | |
392 } else { | |
393 // always do slow unlocking | |
394 // note: the slow unlocking code could be inlined here, however if we use | |
395 // slow unlocking, speed doesn't matter anyway and this solution is | |
396 // simpler and requires less duplicated code - additionally, the | |
397 // slow unlocking code is the same in either case which simplifies | |
398 // debugging | |
399 __ jmp(*slow_case->entry()); | |
400 } | |
401 // done | |
402 __ bind(*slow_case->continuation()); | |
403 | |
404 if (exception->is_valid()) { | |
405 // restore exception | |
304 | 406 __ movptr (exception, Address(rsp, 2 * wordSize)); |
0 | 407 } |
408 } | |
409 | |
410 // This specifies the rsp decrement needed to build the frame | |
411 int LIR_Assembler::initial_frame_size_in_bytes() { | |
412 // if rounding, must let FrameMap know! | |
304 | 413 |
414 // The frame_map records size in slots (32bit word) | |
415 | |
416 // subtract two words to account for return address and link | |
417 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size; | |
0 | 418 } |
419 | |
420 | |
1204 | 421 int LIR_Assembler::emit_exception_handler() { |
0 | 422 // if the last instruction is a call (typically to do a throw which |
423 // is coming at the end after block reordering) the return address | |
424 // must still point into the code area in order to avoid assertion | |
425 // failures when searching for the corresponding bci => add a nop | |
426 // (was bug 5/14/1999 - gri) | |
427 __ nop(); | |
428 | |
429 // generate code for exception handler | |
430 address handler_base = __ start_a_stub(exception_handler_size); | |
431 if (handler_base == NULL) { | |
432 // not enough space left for the handler | |
433 bailout("exception handler overflow"); | |
1204 | 434 return -1; |
0 | 435 } |
1204 | 436 |
0 | 437 int offset = code_offset(); |
438 | |
1295 | 439 // the exception oop and pc are in rax, and rdx |
0 | 440 // no other registers need to be preserved, so invalidate them |
1295 | 441 __ invalidate_registers(false, true, true, false, true, true); |
0 | 442 |
443 // check that there is really an exception | |
444 __ verify_not_null_oop(rax); | |
445 | |
1295 | 446 // search an exception handler (rax: exception oop, rdx: throwing pc) |
447 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_nofpu_id))); | |
448 | |
449 __ stop("should not reach here"); | |
450 | |
0 | 451 assert(code_offset() - offset <= exception_handler_size, "overflow"); |
452 __ end_a_stub(); | |
1204 | 453 |
454 return offset; | |
0 | 455 } |
456 | |
1204 | 457 |
458 int LIR_Assembler::emit_deopt_handler() { | |
0 | 459 // if the last instruction is a call (typically to do a throw which |
460 // is coming at the end after block reordering) the return address | |
461 // must still point into the code area in order to avoid assertion | |
462 // failures when searching for the corresponding bci => add a nop | |
463 // (was bug 5/14/1999 - gri) | |
464 __ nop(); | |
465 | |
466 // generate code for exception handler | |
467 address handler_base = __ start_a_stub(deopt_handler_size); | |
468 if (handler_base == NULL) { | |
469 // not enough space left for the handler | |
470 bailout("deopt handler overflow"); | |
1204 | 471 return -1; |
0 | 472 } |
1204 | 473 |
0 | 474 int offset = code_offset(); |
475 InternalAddress here(__ pc()); | |
1295 | 476 |
0 | 477 __ pushptr(here.addr()); |
478 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack())); | |
1295 | 479 |
0 | 480 assert(code_offset() - offset <= deopt_handler_size, "overflow"); |
481 __ end_a_stub(); | |
482 | |
1204 | 483 return offset; |
0 | 484 } |
485 | |
486 | |
487 // This is the fast version of java.lang.String.compare; it has not | |
488 // OSR-entry and therefore, we generate a slow version for OSR's | |
489 void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) { | |
304 | 490 __ movptr (rbx, rcx); // receiver is in rcx |
491 __ movptr (rax, arg1->as_register()); | |
0 | 492 |
493 // Get addresses of first characters from both Strings | |
304 | 494 __ movptr (rsi, Address(rax, java_lang_String::value_offset_in_bytes())); |
495 __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes())); | |
496 __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 497 |
498 | |
499 // rbx, may be NULL | |
500 add_debug_info_for_null_check_here(info); | |
304 | 501 __ movptr (rdi, Address(rbx, java_lang_String::value_offset_in_bytes())); |
502 __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes())); | |
503 __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 504 |
505 // compute minimum length (in rax) and difference of lengths (on top of stack) | |
506 if (VM_Version::supports_cmov()) { | |
304 | 507 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); |
508 __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes())); | |
509 __ mov (rcx, rbx); | |
510 __ subptr (rbx, rax); // subtract lengths | |
511 __ push (rbx); // result | |
512 __ cmov (Assembler::lessEqual, rax, rcx); | |
0 | 513 } else { |
514 Label L; | |
304 | 515 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); |
516 __ movl (rcx, Address(rax, java_lang_String::count_offset_in_bytes())); | |
517 __ mov (rax, rbx); | |
518 __ subptr (rbx, rcx); | |
519 __ push (rbx); | |
520 __ jcc (Assembler::lessEqual, L); | |
521 __ mov (rax, rcx); | |
0 | 522 __ bind (L); |
523 } | |
524 // is minimum length 0? | |
525 Label noLoop, haveResult; | |
304 | 526 __ testptr (rax, rax); |
0 | 527 __ jcc (Assembler::zero, noLoop); |
528 | |
529 // compare first characters | |
622
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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changeset
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530 __ load_unsigned_short(rcx, Address(rdi, 0)); |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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parents:
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changeset
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531 __ load_unsigned_short(rbx, Address(rsi, 0)); |
0 | 532 __ subl(rcx, rbx); |
533 __ jcc(Assembler::notZero, haveResult); | |
534 // starting loop | |
535 __ decrement(rax); // we already tested index: skip one | |
536 __ jcc(Assembler::zero, noLoop); | |
537 | |
538 // set rsi.edi to the end of the arrays (arrays have same length) | |
539 // negate the index | |
540 | |
304 | 541 __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR))); |
542 __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR))); | |
543 __ negptr(rax); | |
0 | 544 |
545 // compare the strings in a loop | |
546 | |
547 Label loop; | |
548 __ align(wordSize); | |
549 __ bind(loop); | |
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550 __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0)); |
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551 __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0)); |
0 | 552 __ subl(rcx, rbx); |
553 __ jcc(Assembler::notZero, haveResult); | |
554 __ increment(rax); | |
555 __ jcc(Assembler::notZero, loop); | |
556 | |
557 // strings are equal up to min length | |
558 | |
559 __ bind(noLoop); | |
304 | 560 __ pop(rax); |
0 | 561 return_op(LIR_OprFact::illegalOpr); |
562 | |
563 __ bind(haveResult); | |
564 // leave instruction is going to discard the TOS value | |
304 | 565 __ mov (rax, rcx); // result of call is in rax, |
0 | 566 } |
567 | |
568 | |
569 void LIR_Assembler::return_op(LIR_Opr result) { | |
570 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,"); | |
571 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) { | |
572 assert(result->fpu() == 0, "result must already be on TOS"); | |
573 } | |
574 | |
575 // Pop the stack before the safepoint code | |
1295 | 576 __ remove_frame(initial_frame_size_in_bytes()); |
0 | 577 |
578 bool result_is_oop = result->is_valid() ? result->is_oop() : false; | |
579 | |
580 // Note: we do not need to round double result; float result has the right precision | |
581 // the poll sets the condition code, but no data registers | |
582 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
583 relocInfo::poll_return_type); | |
304 | 584 |
585 // NOTE: the requires that the polling page be reachable else the reloc | |
586 // goes to the movq that loads the address and not the faulting instruction | |
587 // which breaks the signal handler code | |
588 | |
0 | 589 __ test32(rax, polling_page); |
590 | |
591 __ ret(0); | |
592 } | |
593 | |
594 | |
595 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { | |
596 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
597 relocInfo::poll_type); | |
598 | |
599 if (info != NULL) { | |
600 add_debug_info_for_branch(info); | |
601 } else { | |
602 ShouldNotReachHere(); | |
603 } | |
604 | |
605 int offset = __ offset(); | |
304 | 606 |
607 // NOTE: the requires that the polling page be reachable else the reloc | |
608 // goes to the movq that loads the address and not the faulting instruction | |
609 // which breaks the signal handler code | |
610 | |
0 | 611 __ test32(rax, polling_page); |
612 return offset; | |
613 } | |
614 | |
615 | |
616 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) { | |
304 | 617 if (from_reg != to_reg) __ mov(to_reg, from_reg); |
0 | 618 } |
619 | |
620 void LIR_Assembler::swap_reg(Register a, Register b) { | |
304 | 621 __ xchgptr(a, b); |
0 | 622 } |
623 | |
624 | |
625 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { | |
626 assert(src->is_constant(), "should not call otherwise"); | |
627 assert(dest->is_register(), "should not call otherwise"); | |
628 LIR_Const* c = src->as_constant_ptr(); | |
629 | |
630 switch (c->type()) { | |
631 case T_INT: { | |
632 assert(patch_code == lir_patch_none, "no patching handled here"); | |
633 __ movl(dest->as_register(), c->as_jint()); | |
634 break; | |
635 } | |
636 | |
637 case T_LONG: { | |
638 assert(patch_code == lir_patch_none, "no patching handled here"); | |
304 | 639 #ifdef _LP64 |
640 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong()); | |
641 #else | |
642 __ movptr(dest->as_register_lo(), c->as_jint_lo()); | |
643 __ movptr(dest->as_register_hi(), c->as_jint_hi()); | |
644 #endif // _LP64 | |
0 | 645 break; |
646 } | |
647 | |
648 case T_OBJECT: { | |
649 if (patch_code != lir_patch_none) { | |
650 jobject2reg_with_patching(dest->as_register(), info); | |
651 } else { | |
652 __ movoop(dest->as_register(), c->as_jobject()); | |
653 } | |
654 break; | |
655 } | |
656 | |
657 case T_FLOAT: { | |
658 if (dest->is_single_xmm()) { | |
659 if (c->is_zero_float()) { | |
660 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg()); | |
661 } else { | |
662 __ movflt(dest->as_xmm_float_reg(), | |
663 InternalAddress(float_constant(c->as_jfloat()))); | |
664 } | |
665 } else { | |
666 assert(dest->is_single_fpu(), "must be"); | |
667 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
668 if (c->is_zero_float()) { | |
669 __ fldz(); | |
670 } else if (c->is_one_float()) { | |
671 __ fld1(); | |
672 } else { | |
673 __ fld_s (InternalAddress(float_constant(c->as_jfloat()))); | |
674 } | |
675 } | |
676 break; | |
677 } | |
678 | |
679 case T_DOUBLE: { | |
680 if (dest->is_double_xmm()) { | |
681 if (c->is_zero_double()) { | |
682 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg()); | |
683 } else { | |
684 __ movdbl(dest->as_xmm_double_reg(), | |
685 InternalAddress(double_constant(c->as_jdouble()))); | |
686 } | |
687 } else { | |
688 assert(dest->is_double_fpu(), "must be"); | |
689 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
690 if (c->is_zero_double()) { | |
691 __ fldz(); | |
692 } else if (c->is_one_double()) { | |
693 __ fld1(); | |
694 } else { | |
695 __ fld_d (InternalAddress(double_constant(c->as_jdouble()))); | |
696 } | |
697 } | |
698 break; | |
699 } | |
700 | |
701 default: | |
702 ShouldNotReachHere(); | |
703 } | |
704 } | |
705 | |
706 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { | |
707 assert(src->is_constant(), "should not call otherwise"); | |
708 assert(dest->is_stack(), "should not call otherwise"); | |
709 LIR_Const* c = src->as_constant_ptr(); | |
710 | |
711 switch (c->type()) { | |
712 case T_INT: // fall through | |
713 case T_FLOAT: | |
714 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); | |
715 break; | |
716 | |
717 case T_OBJECT: | |
718 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject()); | |
719 break; | |
720 | |
721 case T_LONG: // fall through | |
722 case T_DOUBLE: | |
304 | 723 #ifdef _LP64 |
724 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
725 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits()); | |
726 #else | |
727 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
728 lo_word_offset_in_bytes), c->as_jint_lo_bits()); | |
729 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
730 hi_word_offset_in_bytes), c->as_jint_hi_bits()); | |
731 #endif // _LP64 | |
0 | 732 break; |
733 | |
734 default: | |
735 ShouldNotReachHere(); | |
736 } | |
737 } | |
738 | |
739 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info ) { | |
740 assert(src->is_constant(), "should not call otherwise"); | |
741 assert(dest->is_address(), "should not call otherwise"); | |
742 LIR_Const* c = src->as_constant_ptr(); | |
743 LIR_Address* addr = dest->as_address_ptr(); | |
744 | |
304 | 745 int null_check_here = code_offset(); |
0 | 746 switch (type) { |
747 case T_INT: // fall through | |
748 case T_FLOAT: | |
749 __ movl(as_Address(addr), c->as_jint_bits()); | |
750 break; | |
751 | |
752 case T_OBJECT: // fall through | |
753 case T_ARRAY: | |
754 if (c->as_jobject() == NULL) { | |
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755 __ movptr(as_Address(addr), NULL_WORD); |
0 | 756 } else { |
304 | 757 if (is_literal_address(addr)) { |
758 ShouldNotReachHere(); | |
759 __ movoop(as_Address(addr, noreg), c->as_jobject()); | |
760 } else { | |
1060 | 761 #ifdef _LP64 |
762 __ movoop(rscratch1, c->as_jobject()); | |
763 null_check_here = code_offset(); | |
764 __ movptr(as_Address_lo(addr), rscratch1); | |
765 #else | |
304 | 766 __ movoop(as_Address(addr), c->as_jobject()); |
1060 | 767 #endif |
304 | 768 } |
0 | 769 } |
770 break; | |
771 | |
772 case T_LONG: // fall through | |
773 case T_DOUBLE: | |
304 | 774 #ifdef _LP64 |
775 if (is_literal_address(addr)) { | |
776 ShouldNotReachHere(); | |
777 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits()); | |
778 } else { | |
779 __ movptr(r10, (intptr_t)c->as_jlong_bits()); | |
780 null_check_here = code_offset(); | |
781 __ movptr(as_Address_lo(addr), r10); | |
782 } | |
783 #else | |
784 // Always reachable in 32bit so this doesn't produce useless move literal | |
785 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits()); | |
786 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits()); | |
787 #endif // _LP64 | |
0 | 788 break; |
789 | |
790 case T_BOOLEAN: // fall through | |
791 case T_BYTE: | |
792 __ movb(as_Address(addr), c->as_jint() & 0xFF); | |
793 break; | |
794 | |
795 case T_CHAR: // fall through | |
796 case T_SHORT: | |
797 __ movw(as_Address(addr), c->as_jint() & 0xFFFF); | |
798 break; | |
799 | |
800 default: | |
801 ShouldNotReachHere(); | |
802 }; | |
304 | 803 |
804 if (info != NULL) { | |
805 add_debug_info_for_null_check(null_check_here, info); | |
806 } | |
0 | 807 } |
808 | |
809 | |
810 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) { | |
811 assert(src->is_register(), "should not call otherwise"); | |
812 assert(dest->is_register(), "should not call otherwise"); | |
813 | |
814 // move between cpu-registers | |
815 if (dest->is_single_cpu()) { | |
304 | 816 #ifdef _LP64 |
817 if (src->type() == T_LONG) { | |
818 // Can do LONG -> OBJECT | |
819 move_regs(src->as_register_lo(), dest->as_register()); | |
820 return; | |
821 } | |
822 #endif | |
0 | 823 assert(src->is_single_cpu(), "must match"); |
824 if (src->type() == T_OBJECT) { | |
825 __ verify_oop(src->as_register()); | |
826 } | |
827 move_regs(src->as_register(), dest->as_register()); | |
828 | |
829 } else if (dest->is_double_cpu()) { | |
304 | 830 #ifdef _LP64 |
831 if (src->type() == T_OBJECT || src->type() == T_ARRAY) { | |
832 // Surprising to me but we can see move of a long to t_object | |
833 __ verify_oop(src->as_register()); | |
834 move_regs(src->as_register(), dest->as_register_lo()); | |
835 return; | |
836 } | |
837 #endif | |
0 | 838 assert(src->is_double_cpu(), "must match"); |
839 Register f_lo = src->as_register_lo(); | |
840 Register f_hi = src->as_register_hi(); | |
841 Register t_lo = dest->as_register_lo(); | |
842 Register t_hi = dest->as_register_hi(); | |
304 | 843 #ifdef _LP64 |
844 assert(f_hi == f_lo, "must be same"); | |
845 assert(t_hi == t_lo, "must be same"); | |
846 move_regs(f_lo, t_lo); | |
847 #else | |
0 | 848 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation"); |
849 | |
304 | 850 |
0 | 851 if (f_lo == t_hi && f_hi == t_lo) { |
852 swap_reg(f_lo, f_hi); | |
853 } else if (f_hi == t_lo) { | |
854 assert(f_lo != t_hi, "overwriting register"); | |
855 move_regs(f_hi, t_hi); | |
856 move_regs(f_lo, t_lo); | |
857 } else { | |
858 assert(f_hi != t_lo, "overwriting register"); | |
859 move_regs(f_lo, t_lo); | |
860 move_regs(f_hi, t_hi); | |
861 } | |
304 | 862 #endif // LP64 |
0 | 863 |
864 // special moves from fpu-register to xmm-register | |
865 // necessary for method results | |
866 } else if (src->is_single_xmm() && !dest->is_single_xmm()) { | |
867 __ movflt(Address(rsp, 0), src->as_xmm_float_reg()); | |
868 __ fld_s(Address(rsp, 0)); | |
869 } else if (src->is_double_xmm() && !dest->is_double_xmm()) { | |
870 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg()); | |
871 __ fld_d(Address(rsp, 0)); | |
872 } else if (dest->is_single_xmm() && !src->is_single_xmm()) { | |
873 __ fstp_s(Address(rsp, 0)); | |
874 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0)); | |
875 } else if (dest->is_double_xmm() && !src->is_double_xmm()) { | |
876 __ fstp_d(Address(rsp, 0)); | |
877 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0)); | |
878 | |
879 // move between xmm-registers | |
880 } else if (dest->is_single_xmm()) { | |
881 assert(src->is_single_xmm(), "must match"); | |
882 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg()); | |
883 } else if (dest->is_double_xmm()) { | |
884 assert(src->is_double_xmm(), "must match"); | |
885 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg()); | |
886 | |
887 // move between fpu-registers (no instruction necessary because of fpu-stack) | |
888 } else if (dest->is_single_fpu() || dest->is_double_fpu()) { | |
889 assert(src->is_single_fpu() || src->is_double_fpu(), "must match"); | |
890 assert(src->fpu() == dest->fpu(), "currently should be nothing to do"); | |
891 } else { | |
892 ShouldNotReachHere(); | |
893 } | |
894 } | |
895 | |
896 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { | |
897 assert(src->is_register(), "should not call otherwise"); | |
898 assert(dest->is_stack(), "should not call otherwise"); | |
899 | |
900 if (src->is_single_cpu()) { | |
901 Address dst = frame_map()->address_for_slot(dest->single_stack_ix()); | |
902 if (type == T_OBJECT || type == T_ARRAY) { | |
903 __ verify_oop(src->as_register()); | |
304 | 904 __ movptr (dst, src->as_register()); |
905 } else { | |
906 __ movl (dst, src->as_register()); | |
0 | 907 } |
908 | |
909 } else if (src->is_double_cpu()) { | |
910 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes); | |
911 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 912 __ movptr (dstLO, src->as_register_lo()); |
913 NOT_LP64(__ movptr (dstHI, src->as_register_hi())); | |
0 | 914 |
915 } else if (src->is_single_xmm()) { | |
916 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
917 __ movflt(dst_addr, src->as_xmm_float_reg()); | |
918 | |
919 } else if (src->is_double_xmm()) { | |
920 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
921 __ movdbl(dst_addr, src->as_xmm_double_reg()); | |
922 | |
923 } else if (src->is_single_fpu()) { | |
924 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
925 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
926 if (pop_fpu_stack) __ fstp_s (dst_addr); | |
927 else __ fst_s (dst_addr); | |
928 | |
929 } else if (src->is_double_fpu()) { | |
930 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
931 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
932 if (pop_fpu_stack) __ fstp_d (dst_addr); | |
933 else __ fst_d (dst_addr); | |
934 | |
935 } else { | |
936 ShouldNotReachHere(); | |
937 } | |
938 } | |
939 | |
940 | |
941 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool /* unaligned */) { | |
942 LIR_Address* to_addr = dest->as_address_ptr(); | |
943 PatchingStub* patch = NULL; | |
944 | |
945 if (type == T_ARRAY || type == T_OBJECT) { | |
946 __ verify_oop(src->as_register()); | |
947 } | |
948 if (patch_code != lir_patch_none) { | |
949 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 950 Address toa = as_Address(to_addr); |
951 assert(toa.disp() != 0, "must have"); | |
0 | 952 } |
953 if (info != NULL) { | |
954 add_debug_info_for_null_check_here(info); | |
955 } | |
956 | |
957 switch (type) { | |
958 case T_FLOAT: { | |
959 if (src->is_single_xmm()) { | |
960 __ movflt(as_Address(to_addr), src->as_xmm_float_reg()); | |
961 } else { | |
962 assert(src->is_single_fpu(), "must be"); | |
963 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
964 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr)); | |
965 else __ fst_s (as_Address(to_addr)); | |
966 } | |
967 break; | |
968 } | |
969 | |
970 case T_DOUBLE: { | |
971 if (src->is_double_xmm()) { | |
972 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg()); | |
973 } else { | |
974 assert(src->is_double_fpu(), "must be"); | |
975 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
976 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr)); | |
977 else __ fst_d (as_Address(to_addr)); | |
978 } | |
979 break; | |
980 } | |
981 | |
982 case T_ADDRESS: // fall through | |
983 case T_ARRAY: // fall through | |
984 case T_OBJECT: // fall through | |
304 | 985 #ifdef _LP64 |
986 __ movptr(as_Address(to_addr), src->as_register()); | |
987 break; | |
988 #endif // _LP64 | |
0 | 989 case T_INT: |
990 __ movl(as_Address(to_addr), src->as_register()); | |
991 break; | |
992 | |
993 case T_LONG: { | |
994 Register from_lo = src->as_register_lo(); | |
995 Register from_hi = src->as_register_hi(); | |
304 | 996 #ifdef _LP64 |
997 __ movptr(as_Address_lo(to_addr), from_lo); | |
998 #else | |
0 | 999 Register base = to_addr->base()->as_register(); |
1000 Register index = noreg; | |
1001 if (to_addr->index()->is_register()) { | |
1002 index = to_addr->index()->as_register(); | |
1003 } | |
1004 if (base == from_lo || index == from_lo) { | |
1005 assert(base != from_hi, "can't be"); | |
1006 assert(index == noreg || (index != base && index != from_hi), "can't handle this"); | |
1007 __ movl(as_Address_hi(to_addr), from_hi); | |
1008 if (patch != NULL) { | |
1009 patching_epilog(patch, lir_patch_high, base, info); | |
1010 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1011 patch_code = lir_patch_low; | |
1012 } | |
1013 __ movl(as_Address_lo(to_addr), from_lo); | |
1014 } else { | |
1015 assert(index == noreg || (index != base && index != from_lo), "can't handle this"); | |
1016 __ movl(as_Address_lo(to_addr), from_lo); | |
1017 if (patch != NULL) { | |
1018 patching_epilog(patch, lir_patch_low, base, info); | |
1019 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1020 patch_code = lir_patch_high; | |
1021 } | |
1022 __ movl(as_Address_hi(to_addr), from_hi); | |
1023 } | |
304 | 1024 #endif // _LP64 |
0 | 1025 break; |
1026 } | |
1027 | |
1028 case T_BYTE: // fall through | |
1029 case T_BOOLEAN: { | |
1030 Register src_reg = src->as_register(); | |
1031 Address dst_addr = as_Address(to_addr); | |
1032 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6"); | |
1033 __ movb(dst_addr, src_reg); | |
1034 break; | |
1035 } | |
1036 | |
1037 case T_CHAR: // fall through | |
1038 case T_SHORT: | |
1039 __ movw(as_Address(to_addr), src->as_register()); | |
1040 break; | |
1041 | |
1042 default: | |
1043 ShouldNotReachHere(); | |
1044 } | |
1045 | |
1046 if (patch_code != lir_patch_none) { | |
1047 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info); | |
1048 } | |
1049 } | |
1050 | |
1051 | |
1052 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1053 assert(src->is_stack(), "should not call otherwise"); | |
1054 assert(dest->is_register(), "should not call otherwise"); | |
1055 | |
1056 if (dest->is_single_cpu()) { | |
1057 if (type == T_ARRAY || type == T_OBJECT) { | |
304 | 1058 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); |
0 | 1059 __ verify_oop(dest->as_register()); |
304 | 1060 } else { |
1061 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); | |
0 | 1062 } |
1063 | |
1064 } else if (dest->is_double_cpu()) { | |
1065 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes); | |
1066 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 1067 __ movptr(dest->as_register_lo(), src_addr_LO); |
1068 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI)); | |
0 | 1069 |
1070 } else if (dest->is_single_xmm()) { | |
1071 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1072 __ movflt(dest->as_xmm_float_reg(), src_addr); | |
1073 | |
1074 } else if (dest->is_double_xmm()) { | |
1075 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1076 __ movdbl(dest->as_xmm_double_reg(), src_addr); | |
1077 | |
1078 } else if (dest->is_single_fpu()) { | |
1079 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1080 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1081 __ fld_s(src_addr); | |
1082 | |
1083 } else if (dest->is_double_fpu()) { | |
1084 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1085 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1086 __ fld_d(src_addr); | |
1087 | |
1088 } else { | |
1089 ShouldNotReachHere(); | |
1090 } | |
1091 } | |
1092 | |
1093 | |
1094 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1095 if (src->is_single_stack()) { | |
304 | 1096 if (type == T_OBJECT || type == T_ARRAY) { |
1097 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix())); | |
1098 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1099 } else { | |
1060 | 1100 #ifndef _LP64 |
304 | 1101 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix())); |
1102 __ popl (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1060 | 1103 #else |
1104 //no pushl on 64bits | |
1105 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix())); | |
1106 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1); | |
1107 #endif | |
304 | 1108 } |
0 | 1109 |
1110 } else if (src->is_double_stack()) { | |
304 | 1111 #ifdef _LP64 |
1112 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix())); | |
1113 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix())); | |
1114 #else | |
0 | 1115 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0)); |
304 | 1116 // push and pop the part at src + wordSize, adding wordSize for the previous push |
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1117 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize)); |
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1118 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize)); |
0 | 1119 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0)); |
304 | 1120 #endif // _LP64 |
0 | 1121 |
1122 } else { | |
1123 ShouldNotReachHere(); | |
1124 } | |
1125 } | |
1126 | |
1127 | |
1128 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool /* unaligned */) { | |
1129 assert(src->is_address(), "should not call otherwise"); | |
1130 assert(dest->is_register(), "should not call otherwise"); | |
1131 | |
1132 LIR_Address* addr = src->as_address_ptr(); | |
1133 Address from_addr = as_Address(addr); | |
1134 | |
1135 switch (type) { | |
1136 case T_BOOLEAN: // fall through | |
1137 case T_BYTE: // fall through | |
1138 case T_CHAR: // fall through | |
1139 case T_SHORT: | |
1140 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) { | |
1141 // on pre P6 processors we may get partial register stalls | |
1142 // so blow away the value of to_rinfo before loading a | |
1143 // partial word into it. Do it here so that it precedes | |
1144 // the potential patch point below. | |
304 | 1145 __ xorptr(dest->as_register(), dest->as_register()); |
0 | 1146 } |
1147 break; | |
1148 } | |
1149 | |
1150 PatchingStub* patch = NULL; | |
1151 if (patch_code != lir_patch_none) { | |
1152 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 1153 assert(from_addr.disp() != 0, "must have"); |
0 | 1154 } |
1155 if (info != NULL) { | |
1156 add_debug_info_for_null_check_here(info); | |
1157 } | |
1158 | |
1159 switch (type) { | |
1160 case T_FLOAT: { | |
1161 if (dest->is_single_xmm()) { | |
1162 __ movflt(dest->as_xmm_float_reg(), from_addr); | |
1163 } else { | |
1164 assert(dest->is_single_fpu(), "must be"); | |
1165 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1166 __ fld_s(from_addr); | |
1167 } | |
1168 break; | |
1169 } | |
1170 | |
1171 case T_DOUBLE: { | |
1172 if (dest->is_double_xmm()) { | |
1173 __ movdbl(dest->as_xmm_double_reg(), from_addr); | |
1174 } else { | |
1175 assert(dest->is_double_fpu(), "must be"); | |
1176 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1177 __ fld_d(from_addr); | |
1178 } | |
1179 break; | |
1180 } | |
1181 | |
1182 case T_ADDRESS: // fall through | |
1183 case T_OBJECT: // fall through | |
1184 case T_ARRAY: // fall through | |
304 | 1185 #ifdef _LP64 |
1186 __ movptr(dest->as_register(), from_addr); | |
1187 break; | |
1188 #endif // _L64 | |
0 | 1189 case T_INT: |
304 | 1190 // %%% could this be a movl? this is safer but longer instruction |
1191 __ movl2ptr(dest->as_register(), from_addr); | |
0 | 1192 break; |
1193 | |
1194 case T_LONG: { | |
1195 Register to_lo = dest->as_register_lo(); | |
1196 Register to_hi = dest->as_register_hi(); | |
304 | 1197 #ifdef _LP64 |
1198 __ movptr(to_lo, as_Address_lo(addr)); | |
1199 #else | |
0 | 1200 Register base = addr->base()->as_register(); |
1201 Register index = noreg; | |
1202 if (addr->index()->is_register()) { | |
1203 index = addr->index()->as_register(); | |
1204 } | |
1205 if ((base == to_lo && index == to_hi) || | |
1206 (base == to_hi && index == to_lo)) { | |
1207 // addresses with 2 registers are only formed as a result of | |
1208 // array access so this code will never have to deal with | |
1209 // patches or null checks. | |
1210 assert(info == NULL && patch == NULL, "must be"); | |
304 | 1211 __ lea(to_hi, as_Address(addr)); |
0 | 1212 __ movl(to_lo, Address(to_hi, 0)); |
1213 __ movl(to_hi, Address(to_hi, BytesPerWord)); | |
1214 } else if (base == to_lo || index == to_lo) { | |
1215 assert(base != to_hi, "can't be"); | |
1216 assert(index == noreg || (index != base && index != to_hi), "can't handle this"); | |
1217 __ movl(to_hi, as_Address_hi(addr)); | |
1218 if (patch != NULL) { | |
1219 patching_epilog(patch, lir_patch_high, base, info); | |
1220 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1221 patch_code = lir_patch_low; | |
1222 } | |
1223 __ movl(to_lo, as_Address_lo(addr)); | |
1224 } else { | |
1225 assert(index == noreg || (index != base && index != to_lo), "can't handle this"); | |
1226 __ movl(to_lo, as_Address_lo(addr)); | |
1227 if (patch != NULL) { | |
1228 patching_epilog(patch, lir_patch_low, base, info); | |
1229 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1230 patch_code = lir_patch_high; | |
1231 } | |
1232 __ movl(to_hi, as_Address_hi(addr)); | |
1233 } | |
304 | 1234 #endif // _LP64 |
0 | 1235 break; |
1236 } | |
1237 | |
1238 case T_BOOLEAN: // fall through | |
1239 case T_BYTE: { | |
1240 Register dest_reg = dest->as_register(); | |
1241 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1242 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1243 __ movsbl(dest_reg, from_addr); |
0 | 1244 } else { |
1245 __ movb(dest_reg, from_addr); | |
1246 __ shll(dest_reg, 24); | |
1247 __ sarl(dest_reg, 24); | |
1248 } | |
304 | 1249 // These are unsigned so the zero extension on 64bit is just what we need |
0 | 1250 break; |
1251 } | |
1252 | |
1253 case T_CHAR: { | |
1254 Register dest_reg = dest->as_register(); | |
1255 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1256 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1257 __ movzwl(dest_reg, from_addr); |
0 | 1258 } else { |
1259 __ movw(dest_reg, from_addr); | |
1260 } | |
304 | 1261 // This is unsigned so the zero extension on 64bit is just what we need |
1262 // __ movl2ptr(dest_reg, dest_reg); | |
0 | 1263 break; |
1264 } | |
1265 | |
1266 case T_SHORT: { | |
1267 Register dest_reg = dest->as_register(); | |
1268 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1269 __ movswl(dest_reg, from_addr); |
0 | 1270 } else { |
1271 __ movw(dest_reg, from_addr); | |
1272 __ shll(dest_reg, 16); | |
1273 __ sarl(dest_reg, 16); | |
1274 } | |
304 | 1275 // Might not be needed in 64bit but certainly doesn't hurt (except for code size) |
1276 __ movl2ptr(dest_reg, dest_reg); | |
0 | 1277 break; |
1278 } | |
1279 | |
1280 default: | |
1281 ShouldNotReachHere(); | |
1282 } | |
1283 | |
1284 if (patch != NULL) { | |
1285 patching_epilog(patch, patch_code, addr->base()->as_register(), info); | |
1286 } | |
1287 | |
1288 if (type == T_ARRAY || type == T_OBJECT) { | |
1289 __ verify_oop(dest->as_register()); | |
1290 } | |
1291 } | |
1292 | |
1293 | |
1294 void LIR_Assembler::prefetchr(LIR_Opr src) { | |
1295 LIR_Address* addr = src->as_address_ptr(); | |
1296 Address from_addr = as_Address(addr); | |
1297 | |
1298 if (VM_Version::supports_sse()) { | |
1299 switch (ReadPrefetchInstr) { | |
1300 case 0: | |
1301 __ prefetchnta(from_addr); break; | |
1302 case 1: | |
1303 __ prefetcht0(from_addr); break; | |
1304 case 2: | |
1305 __ prefetcht2(from_addr); break; | |
1306 default: | |
1307 ShouldNotReachHere(); break; | |
1308 } | |
1309 } else if (VM_Version::supports_3dnow()) { | |
1310 __ prefetchr(from_addr); | |
1311 } | |
1312 } | |
1313 | |
1314 | |
1315 void LIR_Assembler::prefetchw(LIR_Opr src) { | |
1316 LIR_Address* addr = src->as_address_ptr(); | |
1317 Address from_addr = as_Address(addr); | |
1318 | |
1319 if (VM_Version::supports_sse()) { | |
1320 switch (AllocatePrefetchInstr) { | |
1321 case 0: | |
1322 __ prefetchnta(from_addr); break; | |
1323 case 1: | |
1324 __ prefetcht0(from_addr); break; | |
1325 case 2: | |
1326 __ prefetcht2(from_addr); break; | |
1327 case 3: | |
1328 __ prefetchw(from_addr); break; | |
1329 default: | |
1330 ShouldNotReachHere(); break; | |
1331 } | |
1332 } else if (VM_Version::supports_3dnow()) { | |
1333 __ prefetchw(from_addr); | |
1334 } | |
1335 } | |
1336 | |
1337 | |
1338 NEEDS_CLEANUP; // This could be static? | |
1339 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const { | |
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1340 int elem_size = type2aelembytes(type); |
0 | 1341 switch (elem_size) { |
1342 case 1: return Address::times_1; | |
1343 case 2: return Address::times_2; | |
1344 case 4: return Address::times_4; | |
1345 case 8: return Address::times_8; | |
1346 } | |
1347 ShouldNotReachHere(); | |
1348 return Address::no_scale; | |
1349 } | |
1350 | |
1351 | |
1352 void LIR_Assembler::emit_op3(LIR_Op3* op) { | |
1353 switch (op->code()) { | |
1354 case lir_idiv: | |
1355 case lir_irem: | |
1356 arithmetic_idiv(op->code(), | |
1357 op->in_opr1(), | |
1358 op->in_opr2(), | |
1359 op->in_opr3(), | |
1360 op->result_opr(), | |
1361 op->info()); | |
1362 break; | |
1363 default: ShouldNotReachHere(); break; | |
1364 } | |
1365 } | |
1366 | |
1367 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { | |
1368 #ifdef ASSERT | |
1369 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); | |
1370 if (op->block() != NULL) _branch_target_blocks.append(op->block()); | |
1371 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); | |
1372 #endif | |
1373 | |
1374 if (op->cond() == lir_cond_always) { | |
1375 if (op->info() != NULL) add_debug_info_for_branch(op->info()); | |
1376 __ jmp (*(op->label())); | |
1377 } else { | |
1378 Assembler::Condition acond = Assembler::zero; | |
1379 if (op->code() == lir_cond_float_branch) { | |
1380 assert(op->ublock() != NULL, "must have unordered successor"); | |
1381 __ jcc(Assembler::parity, *(op->ublock()->label())); | |
1382 switch(op->cond()) { | |
1383 case lir_cond_equal: acond = Assembler::equal; break; | |
1384 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1385 case lir_cond_less: acond = Assembler::below; break; | |
1386 case lir_cond_lessEqual: acond = Assembler::belowEqual; break; | |
1387 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break; | |
1388 case lir_cond_greater: acond = Assembler::above; break; | |
1389 default: ShouldNotReachHere(); | |
1390 } | |
1391 } else { | |
1392 switch (op->cond()) { | |
1393 case lir_cond_equal: acond = Assembler::equal; break; | |
1394 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1395 case lir_cond_less: acond = Assembler::less; break; | |
1396 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; | |
1397 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break; | |
1398 case lir_cond_greater: acond = Assembler::greater; break; | |
1399 case lir_cond_belowEqual: acond = Assembler::belowEqual; break; | |
1400 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break; | |
1401 default: ShouldNotReachHere(); | |
1402 } | |
1403 } | |
1404 __ jcc(acond,*(op->label())); | |
1405 } | |
1406 } | |
1407 | |
1408 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { | |
1409 LIR_Opr src = op->in_opr(); | |
1410 LIR_Opr dest = op->result_opr(); | |
1411 | |
1412 switch (op->bytecode()) { | |
1413 case Bytecodes::_i2l: | |
304 | 1414 #ifdef _LP64 |
1415 __ movl2ptr(dest->as_register_lo(), src->as_register()); | |
1416 #else | |
0 | 1417 move_regs(src->as_register(), dest->as_register_lo()); |
1418 move_regs(src->as_register(), dest->as_register_hi()); | |
1419 __ sarl(dest->as_register_hi(), 31); | |
304 | 1420 #endif // LP64 |
0 | 1421 break; |
1422 | |
1423 case Bytecodes::_l2i: | |
1424 move_regs(src->as_register_lo(), dest->as_register()); | |
1425 break; | |
1426 | |
1427 case Bytecodes::_i2b: | |
1428 move_regs(src->as_register(), dest->as_register()); | |
1429 __ sign_extend_byte(dest->as_register()); | |
1430 break; | |
1431 | |
1432 case Bytecodes::_i2c: | |
1433 move_regs(src->as_register(), dest->as_register()); | |
1434 __ andl(dest->as_register(), 0xFFFF); | |
1435 break; | |
1436 | |
1437 case Bytecodes::_i2s: | |
1438 move_regs(src->as_register(), dest->as_register()); | |
1439 __ sign_extend_short(dest->as_register()); | |
1440 break; | |
1441 | |
1442 | |
1443 case Bytecodes::_f2d: | |
1444 case Bytecodes::_d2f: | |
1445 if (dest->is_single_xmm()) { | |
1446 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg()); | |
1447 } else if (dest->is_double_xmm()) { | |
1448 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg()); | |
1449 } else { | |
1450 assert(src->fpu() == dest->fpu(), "register must be equal"); | |
1451 // do nothing (float result is rounded later through spilling) | |
1452 } | |
1453 break; | |
1454 | |
1455 case Bytecodes::_i2f: | |
1456 case Bytecodes::_i2d: | |
1457 if (dest->is_single_xmm()) { | |
304 | 1458 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register()); |
0 | 1459 } else if (dest->is_double_xmm()) { |
304 | 1460 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register()); |
0 | 1461 } else { |
1462 assert(dest->fpu() == 0, "result must be on TOS"); | |
1463 __ movl(Address(rsp, 0), src->as_register()); | |
1464 __ fild_s(Address(rsp, 0)); | |
1465 } | |
1466 break; | |
1467 | |
1468 case Bytecodes::_f2i: | |
1469 case Bytecodes::_d2i: | |
1470 if (src->is_single_xmm()) { | |
304 | 1471 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg()); |
0 | 1472 } else if (src->is_double_xmm()) { |
304 | 1473 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg()); |
0 | 1474 } else { |
1475 assert(src->fpu() == 0, "input must be on TOS"); | |
1476 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc())); | |
1477 __ fist_s(Address(rsp, 0)); | |
1478 __ movl(dest->as_register(), Address(rsp, 0)); | |
1479 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1480 } | |
1481 | |
1482 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub | |
1483 assert(op->stub() != NULL, "stub required"); | |
1484 __ cmpl(dest->as_register(), 0x80000000); | |
1485 __ jcc(Assembler::equal, *op->stub()->entry()); | |
1486 __ bind(*op->stub()->continuation()); | |
1487 break; | |
1488 | |
1489 case Bytecodes::_l2f: | |
1490 case Bytecodes::_l2d: | |
1491 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)"); | |
1492 assert(dest->fpu() == 0, "result must be on TOS"); | |
1493 | |
304 | 1494 __ movptr(Address(rsp, 0), src->as_register_lo()); |
1495 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi())); | |
0 | 1496 __ fild_d(Address(rsp, 0)); |
1497 // float result is rounded later through spilling | |
1498 break; | |
1499 | |
1500 case Bytecodes::_f2l: | |
1501 case Bytecodes::_d2l: | |
1502 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)"); | |
1503 assert(src->fpu() == 0, "input must be on TOS"); | |
304 | 1504 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers"); |
0 | 1505 |
1506 // instruction sequence too long to inline it here | |
1507 { | |
1508 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id))); | |
1509 } | |
1510 break; | |
1511 | |
1512 default: ShouldNotReachHere(); | |
1513 } | |
1514 } | |
1515 | |
1516 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { | |
1517 if (op->init_check()) { | |
1518 __ cmpl(Address(op->klass()->as_register(), | |
1519 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), | |
1520 instanceKlass::fully_initialized); | |
1521 add_debug_info_for_null_check_here(op->stub()->info()); | |
1522 __ jcc(Assembler::notEqual, *op->stub()->entry()); | |
1523 } | |
1524 __ allocate_object(op->obj()->as_register(), | |
1525 op->tmp1()->as_register(), | |
1526 op->tmp2()->as_register(), | |
1527 op->header_size(), | |
1528 op->object_size(), | |
1529 op->klass()->as_register(), | |
1530 *op->stub()->entry()); | |
1531 __ bind(*op->stub()->continuation()); | |
1532 } | |
1533 | |
1534 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { | |
1535 if (UseSlowPath || | |
1536 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || | |
1537 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { | |
1538 __ jmp(*op->stub()->entry()); | |
1539 } else { | |
1540 Register len = op->len()->as_register(); | |
1541 Register tmp1 = op->tmp1()->as_register(); | |
1542 Register tmp2 = op->tmp2()->as_register(); | |
1543 Register tmp3 = op->tmp3()->as_register(); | |
1544 if (len == tmp1) { | |
1545 tmp1 = tmp3; | |
1546 } else if (len == tmp2) { | |
1547 tmp2 = tmp3; | |
1548 } else if (len == tmp3) { | |
1549 // everything is ok | |
1550 } else { | |
304 | 1551 __ mov(tmp3, len); |
0 | 1552 } |
1553 __ allocate_array(op->obj()->as_register(), | |
1554 len, | |
1555 tmp1, | |
1556 tmp2, | |
1557 arrayOopDesc::header_size(op->type()), | |
1558 array_element_size(op->type()), | |
1559 op->klass()->as_register(), | |
1560 *op->stub()->entry()); | |
1561 } | |
1562 __ bind(*op->stub()->continuation()); | |
1563 } | |
1564 | |
1565 | |
1566 | |
1567 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { | |
1568 LIR_Code code = op->code(); | |
1569 if (code == lir_store_check) { | |
1570 Register value = op->object()->as_register(); | |
1571 Register array = op->array()->as_register(); | |
1572 Register k_RInfo = op->tmp1()->as_register(); | |
1573 Register klass_RInfo = op->tmp2()->as_register(); | |
1574 Register Rtmp1 = op->tmp3()->as_register(); | |
1575 | |
1576 CodeStub* stub = op->stub(); | |
1577 Label done; | |
304 | 1578 __ cmpptr(value, (int32_t)NULL_WORD); |
0 | 1579 __ jcc(Assembler::equal, done); |
1580 add_debug_info_for_null_check_here(op->info_for_exception()); | |
304 | 1581 __ movptr(k_RInfo, Address(array, oopDesc::klass_offset_in_bytes())); |
1582 __ movptr(klass_RInfo, Address(value, oopDesc::klass_offset_in_bytes())); | |
0 | 1583 |
1584 // get instance klass | |
304 | 1585 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); |
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1586 // perform the fast part of the checking logic |
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1587 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, stub->entry(), NULL); |
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1588 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1589 __ push(klass_RInfo); |
1590 __ push(k_RInfo); | |
0 | 1591 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1592 __ pop(klass_RInfo); |
1593 __ pop(k_RInfo); | |
1594 // result is a boolean | |
0 | 1595 __ cmpl(k_RInfo, 0); |
1596 __ jcc(Assembler::equal, *stub->entry()); | |
1597 __ bind(done); | |
1598 } else if (op->code() == lir_checkcast) { | |
1599 // we always need a stub for the failure case. | |
1600 CodeStub* stub = op->stub(); | |
1601 Register obj = op->object()->as_register(); | |
1602 Register k_RInfo = op->tmp1()->as_register(); | |
1603 Register klass_RInfo = op->tmp2()->as_register(); | |
1604 Register dst = op->result_opr()->as_register(); | |
1605 ciKlass* k = op->klass(); | |
1606 Register Rtmp1 = noreg; | |
1607 | |
1608 Label done; | |
1609 if (obj == k_RInfo) { | |
1610 k_RInfo = dst; | |
1611 } else if (obj == klass_RInfo) { | |
1612 klass_RInfo = dst; | |
1613 } | |
1614 if (k->is_loaded()) { | |
1615 select_different_registers(obj, dst, k_RInfo, klass_RInfo); | |
1616 } else { | |
1617 Rtmp1 = op->tmp3()->as_register(); | |
1618 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); | |
1619 } | |
1620 | |
1621 assert_different_registers(obj, k_RInfo, klass_RInfo); | |
1622 if (!k->is_loaded()) { | |
1623 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
1624 } else { | |
304 | 1625 #ifdef _LP64 |
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1626 __ movoop(k_RInfo, k->constant_encoding()); |
304 | 1627 #else |
0 | 1628 k_RInfo = noreg; |
304 | 1629 #endif // _LP64 |
0 | 1630 } |
1631 assert(obj != k_RInfo, "must be different"); | |
304 | 1632 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1633 if (op->profiled_method() != NULL) { |
1634 ciMethod* method = op->profiled_method(); | |
1635 int bci = op->profiled_bci(); | |
1636 | |
1637 Label profile_done; | |
1638 __ jcc(Assembler::notEqual, profile_done); | |
1639 // Object is null; update methodDataOop | |
1640 ciMethodData* md = method->method_data(); | |
1641 if (md == NULL) { | |
1642 bailout("out of memory building methodDataOop"); | |
1643 return; | |
1644 } | |
1645 ciProfileData* data = md->bci_to_data(bci); | |
1646 assert(data != NULL, "need data for checkcast"); | |
1647 assert(data->is_BitData(), "need BitData for checkcast"); | |
1648 Register mdo = klass_RInfo; | |
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1649 __ movoop(mdo, md->constant_encoding()); |
0 | 1650 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); |
1651 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); | |
1652 __ orl(data_addr, header_bits); | |
1653 __ jmp(done); | |
1654 __ bind(profile_done); | |
1655 } else { | |
1656 __ jcc(Assembler::equal, done); | |
1657 } | |
1658 __ verify_oop(obj); | |
1659 | |
1660 if (op->fast_check()) { | |
1661 // get object classo | |
1662 // not a safepoint as obj null check happens earlier | |
1663 if (k->is_loaded()) { | |
304 | 1664 #ifdef _LP64 |
1665 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1666 #else | |
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1667 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); |
304 | 1668 #endif // _LP64 |
0 | 1669 } else { |
304 | 1670 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1671 |
1672 } | |
1673 __ jcc(Assembler::notEqual, *stub->entry()); | |
1674 __ bind(done); | |
1675 } else { | |
1676 // get object class | |
1677 // not a safepoint as obj null check happens earlier | |
304 | 1678 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1679 if (k->is_loaded()) { |
1680 // See if we get an immediate positive hit | |
304 | 1681 #ifdef _LP64 |
1682 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); | |
1683 #else | |
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1684 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
304 | 1685 #endif // _LP64 |
0 | 1686 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { |
1687 __ jcc(Assembler::notEqual, *stub->entry()); | |
1688 } else { | |
1689 // See if we get an immediate positive hit | |
1690 __ jcc(Assembler::equal, done); | |
1691 // check for self | |
304 | 1692 #ifdef _LP64 |
1693 __ cmpptr(klass_RInfo, k_RInfo); | |
1694 #else | |
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1695 __ cmpoop(klass_RInfo, k->constant_encoding()); |
304 | 1696 #endif // _LP64 |
0 | 1697 __ jcc(Assembler::equal, done); |
1698 | |
304 | 1699 __ push(klass_RInfo); |
1700 #ifdef _LP64 | |
1701 __ push(k_RInfo); | |
1702 #else | |
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1703 __ pushoop(k->constant_encoding()); |
304 | 1704 #endif // _LP64 |
0 | 1705 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1706 __ pop(klass_RInfo); |
1707 __ pop(klass_RInfo); | |
1708 // result is a boolean | |
0 | 1709 __ cmpl(klass_RInfo, 0); |
1710 __ jcc(Assembler::equal, *stub->entry()); | |
1711 } | |
1712 __ bind(done); | |
1713 } else { | |
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1714 // perform the fast part of the checking logic |
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1715 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, stub->entry(), NULL); |
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1716 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1717 __ push(klass_RInfo); |
1718 __ push(k_RInfo); | |
0 | 1719 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1720 __ pop(klass_RInfo); |
1721 __ pop(k_RInfo); | |
1722 // result is a boolean | |
0 | 1723 __ cmpl(k_RInfo, 0); |
1724 __ jcc(Assembler::equal, *stub->entry()); | |
1725 __ bind(done); | |
1726 } | |
1727 | |
1728 } | |
1729 if (dst != obj) { | |
304 | 1730 __ mov(dst, obj); |
0 | 1731 } |
1732 } else if (code == lir_instanceof) { | |
1733 Register obj = op->object()->as_register(); | |
1734 Register k_RInfo = op->tmp1()->as_register(); | |
1735 Register klass_RInfo = op->tmp2()->as_register(); | |
1736 Register dst = op->result_opr()->as_register(); | |
1737 ciKlass* k = op->klass(); | |
1738 | |
1739 Label done; | |
1740 Label zero; | |
1741 Label one; | |
1742 if (obj == k_RInfo) { | |
1743 k_RInfo = klass_RInfo; | |
1744 klass_RInfo = obj; | |
1745 } | |
1746 // patching may screw with our temporaries on sparc, | |
1747 // so let's do it before loading the class | |
1748 if (!k->is_loaded()) { | |
1749 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
304 | 1750 } else { |
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1751 LP64_ONLY(__ movoop(k_RInfo, k->constant_encoding())); |
0 | 1752 } |
1753 assert(obj != k_RInfo, "must be different"); | |
1754 | |
1755 __ verify_oop(obj); | |
1756 if (op->fast_check()) { | |
304 | 1757 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1758 __ jcc(Assembler::equal, zero); |
1759 // get object class | |
1760 // not a safepoint as obj null check happens earlier | |
304 | 1761 if (LP64_ONLY(false &&) k->is_loaded()) { |
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1762 NOT_LP64(__ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding())); |
0 | 1763 k_RInfo = noreg; |
1764 } else { | |
304 | 1765 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1766 |
1767 } | |
1768 __ jcc(Assembler::equal, one); | |
1769 } else { | |
1770 // get object class | |
1771 // not a safepoint as obj null check happens earlier | |
304 | 1772 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1773 __ jcc(Assembler::equal, zero); |
304 | 1774 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
1775 | |
1776 #ifndef _LP64 | |
0 | 1777 if (k->is_loaded()) { |
1778 // See if we get an immediate positive hit | |
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1779 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
0 | 1780 __ jcc(Assembler::equal, one); |
1781 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() == k->super_check_offset()) { | |
1782 // check for self | |
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1783 __ cmpoop(klass_RInfo, k->constant_encoding()); |
0 | 1784 __ jcc(Assembler::equal, one); |
304 | 1785 __ push(klass_RInfo); |
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1786 __ pushoop(k->constant_encoding()); |
0 | 1787 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1788 __ pop(klass_RInfo); |
1789 __ pop(dst); | |
0 | 1790 __ jmp(done); |
1791 } | |
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1792 } |
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1793 else // next block is unconditional if LP64: |
304 | 1794 #endif // LP64 |
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1795 { |
0 | 1796 assert(dst != klass_RInfo && dst != k_RInfo, "need 3 registers"); |
1797 | |
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1798 // perform the fast part of the checking logic |
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1799 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, dst, &one, &zero, NULL); |
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1800 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1801 __ push(klass_RInfo); |
1802 __ push(k_RInfo); | |
0 | 1803 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1804 __ pop(klass_RInfo); |
1805 __ pop(dst); | |
0 | 1806 __ jmp(done); |
1807 } | |
1808 } | |
1809 __ bind(zero); | |
304 | 1810 __ xorptr(dst, dst); |
0 | 1811 __ jmp(done); |
1812 __ bind(one); | |
304 | 1813 __ movptr(dst, 1); |
0 | 1814 __ bind(done); |
1815 } else { | |
1816 ShouldNotReachHere(); | |
1817 } | |
1818 | |
1819 } | |
1820 | |
1821 | |
1822 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { | |
304 | 1823 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { |
0 | 1824 assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); |
1825 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); | |
1826 assert(op->new_value()->as_register_lo() == rbx, "wrong register"); | |
1827 assert(op->new_value()->as_register_hi() == rcx, "wrong register"); | |
1828 Register addr = op->addr()->as_register(); | |
1829 if (os::is_MP()) { | |
1830 __ lock(); | |
1831 } | |
304 | 1832 NOT_LP64(__ cmpxchg8(Address(addr, 0))); |
1833 | |
1834 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { | |
1835 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) | |
1836 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
0 | 1837 Register newval = op->new_value()->as_register(); |
1838 Register cmpval = op->cmp_value()->as_register(); | |
1839 assert(cmpval == rax, "wrong register"); | |
1840 assert(newval != NULL, "new val must be register"); | |
1841 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1842 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1843 assert(newval != addr, "new value and addr must be in different registers"); | |
1844 if (os::is_MP()) { | |
1845 __ lock(); | |
1846 } | |
304 | 1847 if ( op->code() == lir_cas_obj) { |
1848 __ cmpxchgptr(newval, Address(addr, 0)); | |
1849 } else if (op->code() == lir_cas_int) { | |
1850 __ cmpxchgl(newval, Address(addr, 0)); | |
1851 } else { | |
1852 LP64_ONLY(__ cmpxchgq(newval, Address(addr, 0))); | |
1853 } | |
1854 #ifdef _LP64 | |
1855 } else if (op->code() == lir_cas_long) { | |
1856 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
1857 Register newval = op->new_value()->as_register_lo(); | |
1858 Register cmpval = op->cmp_value()->as_register_lo(); | |
1859 assert(cmpval == rax, "wrong register"); | |
1860 assert(newval != NULL, "new val must be register"); | |
1861 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1862 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1863 assert(newval != addr, "new value and addr must be in different registers"); | |
1864 if (os::is_MP()) { | |
1865 __ lock(); | |
1866 } | |
1867 __ cmpxchgq(newval, Address(addr, 0)); | |
1868 #endif // _LP64 | |
0 | 1869 } else { |
1870 Unimplemented(); | |
1871 } | |
1872 } | |
1873 | |
1874 | |
1875 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { | |
1876 Assembler::Condition acond, ncond; | |
1877 switch (condition) { | |
1878 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; | |
1879 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; | |
1880 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; | |
1881 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; | |
1882 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; | |
1883 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; | |
1884 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; | |
1885 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; | |
1886 default: ShouldNotReachHere(); | |
1887 } | |
1888 | |
1889 if (opr1->is_cpu_register()) { | |
1890 reg2reg(opr1, result); | |
1891 } else if (opr1->is_stack()) { | |
1892 stack2reg(opr1, result, result->type()); | |
1893 } else if (opr1->is_constant()) { | |
1894 const2reg(opr1, result, lir_patch_none, NULL); | |
1895 } else { | |
1896 ShouldNotReachHere(); | |
1897 } | |
1898 | |
1899 if (VM_Version::supports_cmov() && !opr2->is_constant()) { | |
1900 // optimized version that does not require a branch | |
1901 if (opr2->is_single_cpu()) { | |
1902 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); | |
304 | 1903 __ cmov(ncond, result->as_register(), opr2->as_register()); |
0 | 1904 } else if (opr2->is_double_cpu()) { |
1905 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
1906 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
304 | 1907 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); |
1908 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) | |
0 | 1909 } else if (opr2->is_single_stack()) { |
1910 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); | |
1911 } else if (opr2->is_double_stack()) { | |
304 | 1912 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); |
1913 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) | |
0 | 1914 } else { |
1915 ShouldNotReachHere(); | |
1916 } | |
1917 | |
1918 } else { | |
1919 Label skip; | |
1920 __ jcc (acond, skip); | |
1921 if (opr2->is_cpu_register()) { | |
1922 reg2reg(opr2, result); | |
1923 } else if (opr2->is_stack()) { | |
1924 stack2reg(opr2, result, result->type()); | |
1925 } else if (opr2->is_constant()) { | |
1926 const2reg(opr2, result, lir_patch_none, NULL); | |
1927 } else { | |
1928 ShouldNotReachHere(); | |
1929 } | |
1930 __ bind(skip); | |
1931 } | |
1932 } | |
1933 | |
1934 | |
1935 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { | |
1936 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); | |
1937 | |
1938 if (left->is_single_cpu()) { | |
1939 assert(left == dest, "left and dest must be equal"); | |
1940 Register lreg = left->as_register(); | |
1941 | |
1942 if (right->is_single_cpu()) { | |
1943 // cpu register - cpu register | |
1944 Register rreg = right->as_register(); | |
1945 switch (code) { | |
1946 case lir_add: __ addl (lreg, rreg); break; | |
1947 case lir_sub: __ subl (lreg, rreg); break; | |
1948 case lir_mul: __ imull(lreg, rreg); break; | |
1949 default: ShouldNotReachHere(); | |
1950 } | |
1951 | |
1952 } else if (right->is_stack()) { | |
1953 // cpu register - stack | |
1954 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
1955 switch (code) { | |
1956 case lir_add: __ addl(lreg, raddr); break; | |
1957 case lir_sub: __ subl(lreg, raddr); break; | |
1958 default: ShouldNotReachHere(); | |
1959 } | |
1960 | |
1961 } else if (right->is_constant()) { | |
1962 // cpu register - constant | |
1963 jint c = right->as_constant_ptr()->as_jint(); | |
1964 switch (code) { | |
1965 case lir_add: { | |
1966 __ increment(lreg, c); | |
1967 break; | |
1968 } | |
1969 case lir_sub: { | |
1970 __ decrement(lreg, c); | |
1971 break; | |
1972 } | |
1973 default: ShouldNotReachHere(); | |
1974 } | |
1975 | |
1976 } else { | |
1977 ShouldNotReachHere(); | |
1978 } | |
1979 | |
1980 } else if (left->is_double_cpu()) { | |
1981 assert(left == dest, "left and dest must be equal"); | |
1982 Register lreg_lo = left->as_register_lo(); | |
1983 Register lreg_hi = left->as_register_hi(); | |
1984 | |
1985 if (right->is_double_cpu()) { | |
1986 // cpu register - cpu register | |
1987 Register rreg_lo = right->as_register_lo(); | |
1988 Register rreg_hi = right->as_register_hi(); | |
304 | 1989 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); |
1990 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); | |
0 | 1991 switch (code) { |
1992 case lir_add: | |
304 | 1993 __ addptr(lreg_lo, rreg_lo); |
1994 NOT_LP64(__ adcl(lreg_hi, rreg_hi)); | |
0 | 1995 break; |
1996 case lir_sub: | |
304 | 1997 __ subptr(lreg_lo, rreg_lo); |
1998 NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); | |
0 | 1999 break; |
2000 case lir_mul: | |
304 | 2001 #ifdef _LP64 |
2002 __ imulq(lreg_lo, rreg_lo); | |
2003 #else | |
0 | 2004 assert(lreg_lo == rax && lreg_hi == rdx, "must be"); |
2005 __ imull(lreg_hi, rreg_lo); | |
2006 __ imull(rreg_hi, lreg_lo); | |
2007 __ addl (rreg_hi, lreg_hi); | |
2008 __ mull (rreg_lo); | |
2009 __ addl (lreg_hi, rreg_hi); | |
304 | 2010 #endif // _LP64 |
0 | 2011 break; |
2012 default: | |
2013 ShouldNotReachHere(); | |
2014 } | |
2015 | |
2016 } else if (right->is_constant()) { | |
2017 // cpu register - constant | |
304 | 2018 #ifdef _LP64 |
2019 jlong c = right->as_constant_ptr()->as_jlong_bits(); | |
2020 __ movptr(r10, (intptr_t) c); | |
2021 switch (code) { | |
2022 case lir_add: | |
2023 __ addptr(lreg_lo, r10); | |
2024 break; | |
2025 case lir_sub: | |
2026 __ subptr(lreg_lo, r10); | |
2027 break; | |
2028 default: | |
2029 ShouldNotReachHere(); | |
2030 } | |
2031 #else | |
0 | 2032 jint c_lo = right->as_constant_ptr()->as_jint_lo(); |
2033 jint c_hi = right->as_constant_ptr()->as_jint_hi(); | |
2034 switch (code) { | |
2035 case lir_add: | |
304 | 2036 __ addptr(lreg_lo, c_lo); |
0 | 2037 __ adcl(lreg_hi, c_hi); |
2038 break; | |
2039 case lir_sub: | |
304 | 2040 __ subptr(lreg_lo, c_lo); |
0 | 2041 __ sbbl(lreg_hi, c_hi); |
2042 break; | |
2043 default: | |
2044 ShouldNotReachHere(); | |
2045 } | |
304 | 2046 #endif // _LP64 |
0 | 2047 |
2048 } else { | |
2049 ShouldNotReachHere(); | |
2050 } | |
2051 | |
2052 } else if (left->is_single_xmm()) { | |
2053 assert(left == dest, "left and dest must be equal"); | |
2054 XMMRegister lreg = left->as_xmm_float_reg(); | |
2055 | |
2056 if (right->is_single_xmm()) { | |
2057 XMMRegister rreg = right->as_xmm_float_reg(); | |
2058 switch (code) { | |
2059 case lir_add: __ addss(lreg, rreg); break; | |
2060 case lir_sub: __ subss(lreg, rreg); break; | |
2061 case lir_mul_strictfp: // fall through | |
2062 case lir_mul: __ mulss(lreg, rreg); break; | |
2063 case lir_div_strictfp: // fall through | |
2064 case lir_div: __ divss(lreg, rreg); break; | |
2065 default: ShouldNotReachHere(); | |
2066 } | |
2067 } else { | |
2068 Address raddr; | |
2069 if (right->is_single_stack()) { | |
2070 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2071 } else if (right->is_constant()) { | |
2072 // hack for now | |
2073 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); | |
2074 } else { | |
2075 ShouldNotReachHere(); | |
2076 } | |
2077 switch (code) { | |
2078 case lir_add: __ addss(lreg, raddr); break; | |
2079 case lir_sub: __ subss(lreg, raddr); break; | |
2080 case lir_mul_strictfp: // fall through | |
2081 case lir_mul: __ mulss(lreg, raddr); break; | |
2082 case lir_div_strictfp: // fall through | |
2083 case lir_div: __ divss(lreg, raddr); break; | |
2084 default: ShouldNotReachHere(); | |
2085 } | |
2086 } | |
2087 | |
2088 } else if (left->is_double_xmm()) { | |
2089 assert(left == dest, "left and dest must be equal"); | |
2090 | |
2091 XMMRegister lreg = left->as_xmm_double_reg(); | |
2092 if (right->is_double_xmm()) { | |
2093 XMMRegister rreg = right->as_xmm_double_reg(); | |
2094 switch (code) { | |
2095 case lir_add: __ addsd(lreg, rreg); break; | |
2096 case lir_sub: __ subsd(lreg, rreg); break; | |
2097 case lir_mul_strictfp: // fall through | |
2098 case lir_mul: __ mulsd(lreg, rreg); break; | |
2099 case lir_div_strictfp: // fall through | |
2100 case lir_div: __ divsd(lreg, rreg); break; | |
2101 default: ShouldNotReachHere(); | |
2102 } | |
2103 } else { | |
2104 Address raddr; | |
2105 if (right->is_double_stack()) { | |
2106 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2107 } else if (right->is_constant()) { | |
2108 // hack for now | |
2109 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2110 } else { | |
2111 ShouldNotReachHere(); | |
2112 } | |
2113 switch (code) { | |
2114 case lir_add: __ addsd(lreg, raddr); break; | |
2115 case lir_sub: __ subsd(lreg, raddr); break; | |
2116 case lir_mul_strictfp: // fall through | |
2117 case lir_mul: __ mulsd(lreg, raddr); break; | |
2118 case lir_div_strictfp: // fall through | |
2119 case lir_div: __ divsd(lreg, raddr); break; | |
2120 default: ShouldNotReachHere(); | |
2121 } | |
2122 } | |
2123 | |
2124 } else if (left->is_single_fpu()) { | |
2125 assert(dest->is_single_fpu(), "fpu stack allocation required"); | |
2126 | |
2127 if (right->is_single_fpu()) { | |
2128 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); | |
2129 | |
2130 } else { | |
2131 assert(left->fpu_regnr() == 0, "left must be on TOS"); | |
2132 assert(dest->fpu_regnr() == 0, "dest must be on TOS"); | |
2133 | |
2134 Address raddr; | |
2135 if (right->is_single_stack()) { | |
2136 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2137 } else if (right->is_constant()) { | |
2138 address const_addr = float_constant(right->as_jfloat()); | |
2139 assert(const_addr != NULL, "incorrect float/double constant maintainance"); | |
2140 // hack for now | |
2141 raddr = __ as_Address(InternalAddress(const_addr)); | |
2142 } else { | |
2143 ShouldNotReachHere(); | |
2144 } | |
2145 | |
2146 switch (code) { | |
2147 case lir_add: __ fadd_s(raddr); break; | |
2148 case lir_sub: __ fsub_s(raddr); break; | |
2149 case lir_mul_strictfp: // fall through | |
2150 case lir_mul: __ fmul_s(raddr); break; | |
2151 case lir_div_strictfp: // fall through | |
2152 case lir_div: __ fdiv_s(raddr); break; | |
2153 default: ShouldNotReachHere(); | |
2154 } | |
2155 } | |
2156 | |
2157 } else if (left->is_double_fpu()) { | |
2158 assert(dest->is_double_fpu(), "fpu stack allocation required"); | |
2159 | |
2160 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2161 // Double values require special handling for strictfp mul/div on x86 | |
2162 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
2163 __ fmulp(left->fpu_regnrLo() + 1); | |
2164 } | |
2165 | |
2166 if (right->is_double_fpu()) { | |
2167 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); | |
2168 | |
2169 } else { | |
2170 assert(left->fpu_regnrLo() == 0, "left must be on TOS"); | |
2171 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); | |
2172 | |
2173 Address raddr; | |
2174 if (right->is_double_stack()) { | |
2175 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2176 } else if (right->is_constant()) { | |
2177 // hack for now | |
2178 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2179 } else { | |
2180 ShouldNotReachHere(); | |
2181 } | |
2182 | |
2183 switch (code) { | |
2184 case lir_add: __ fadd_d(raddr); break; | |
2185 case lir_sub: __ fsub_d(raddr); break; | |
2186 case lir_mul_strictfp: // fall through | |
2187 case lir_mul: __ fmul_d(raddr); break; | |
2188 case lir_div_strictfp: // fall through | |
2189 case lir_div: __ fdiv_d(raddr); break; | |
2190 default: ShouldNotReachHere(); | |
2191 } | |
2192 } | |
2193 | |
2194 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2195 // Double values require special handling for strictfp mul/div on x86 | |
2196 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
2197 __ fmulp(dest->fpu_regnrLo() + 1); | |
2198 } | |
2199 | |
2200 } else if (left->is_single_stack() || left->is_address()) { | |
2201 assert(left == dest, "left and dest must be equal"); | |
2202 | |
2203 Address laddr; | |
2204 if (left->is_single_stack()) { | |
2205 laddr = frame_map()->address_for_slot(left->single_stack_ix()); | |
2206 } else if (left->is_address()) { | |
2207 laddr = as_Address(left->as_address_ptr()); | |
2208 } else { | |
2209 ShouldNotReachHere(); | |
2210 } | |
2211 | |
2212 if (right->is_single_cpu()) { | |
2213 Register rreg = right->as_register(); | |
2214 switch (code) { | |
2215 case lir_add: __ addl(laddr, rreg); break; | |
2216 case lir_sub: __ subl(laddr, rreg); break; | |
2217 default: ShouldNotReachHere(); | |
2218 } | |
2219 } else if (right->is_constant()) { | |
2220 jint c = right->as_constant_ptr()->as_jint(); | |
2221 switch (code) { | |
2222 case lir_add: { | |
304 | 2223 __ incrementl(laddr, c); |
0 | 2224 break; |
2225 } | |
2226 case lir_sub: { | |
304 | 2227 __ decrementl(laddr, c); |
0 | 2228 break; |
2229 } | |
2230 default: ShouldNotReachHere(); | |
2231 } | |
2232 } else { | |
2233 ShouldNotReachHere(); | |
2234 } | |
2235 | |
2236 } else { | |
2237 ShouldNotReachHere(); | |
2238 } | |
2239 } | |
2240 | |
2241 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { | |
2242 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); | |
2243 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); | |
2244 assert(left_index == 0 || right_index == 0, "either must be on top of stack"); | |
2245 | |
2246 bool left_is_tos = (left_index == 0); | |
2247 bool dest_is_tos = (dest_index == 0); | |
2248 int non_tos_index = (left_is_tos ? right_index : left_index); | |
2249 | |
2250 switch (code) { | |
2251 case lir_add: | |
2252 if (pop_fpu_stack) __ faddp(non_tos_index); | |
2253 else if (dest_is_tos) __ fadd (non_tos_index); | |
2254 else __ fadda(non_tos_index); | |
2255 break; | |
2256 | |
2257 case lir_sub: | |
2258 if (left_is_tos) { | |
2259 if (pop_fpu_stack) __ fsubrp(non_tos_index); | |
2260 else if (dest_is_tos) __ fsub (non_tos_index); | |
2261 else __ fsubra(non_tos_index); | |
2262 } else { | |
2263 if (pop_fpu_stack) __ fsubp (non_tos_index); | |
2264 else if (dest_is_tos) __ fsubr (non_tos_index); | |
2265 else __ fsuba (non_tos_index); | |
2266 } | |
2267 break; | |
2268 | |
2269 case lir_mul_strictfp: // fall through | |
2270 case lir_mul: | |
2271 if (pop_fpu_stack) __ fmulp(non_tos_index); | |
2272 else if (dest_is_tos) __ fmul (non_tos_index); | |
2273 else __ fmula(non_tos_index); | |
2274 break; | |
2275 | |
2276 case lir_div_strictfp: // fall through | |
2277 case lir_div: | |
2278 if (left_is_tos) { | |
2279 if (pop_fpu_stack) __ fdivrp(non_tos_index); | |
2280 else if (dest_is_tos) __ fdiv (non_tos_index); | |
2281 else __ fdivra(non_tos_index); | |
2282 } else { | |
2283 if (pop_fpu_stack) __ fdivp (non_tos_index); | |
2284 else if (dest_is_tos) __ fdivr (non_tos_index); | |
2285 else __ fdiva (non_tos_index); | |
2286 } | |
2287 break; | |
2288 | |
2289 case lir_rem: | |
2290 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); | |
2291 __ fremr(noreg); | |
2292 break; | |
2293 | |
2294 default: | |
2295 ShouldNotReachHere(); | |
2296 } | |
2297 } | |
2298 | |
2299 | |
2300 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { | |
2301 if (value->is_double_xmm()) { | |
2302 switch(code) { | |
2303 case lir_abs : | |
2304 { | |
2305 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { | |
2306 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); | |
2307 } | |
2308 __ andpd(dest->as_xmm_double_reg(), | |
2309 ExternalAddress((address)double_signmask_pool)); | |
2310 } | |
2311 break; | |
2312 | |
2313 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; | |
2314 // all other intrinsics are not available in the SSE instruction set, so FPU is used | |
2315 default : ShouldNotReachHere(); | |
2316 } | |
2317 | |
2318 } else if (value->is_double_fpu()) { | |
2319 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); | |
2320 switch(code) { | |
2321 case lir_log : __ flog() ; break; | |
2322 case lir_log10 : __ flog10() ; break; | |
2323 case lir_abs : __ fabs() ; break; | |
2324 case lir_sqrt : __ fsqrt(); break; | |
2325 case lir_sin : | |
2326 // Should consider not saving rbx, if not necessary | |
2327 __ trigfunc('s', op->as_Op2()->fpu_stack_size()); | |
2328 break; | |
2329 case lir_cos : | |
2330 // Should consider not saving rbx, if not necessary | |
2331 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); | |
2332 __ trigfunc('c', op->as_Op2()->fpu_stack_size()); | |
2333 break; | |
2334 case lir_tan : | |
2335 // Should consider not saving rbx, if not necessary | |
2336 __ trigfunc('t', op->as_Op2()->fpu_stack_size()); | |
2337 break; | |
2338 default : ShouldNotReachHere(); | |
2339 } | |
2340 } else { | |
2341 Unimplemented(); | |
2342 } | |
2343 } | |
2344 | |
2345 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { | |
2346 // assert(left->destroys_register(), "check"); | |
2347 if (left->is_single_cpu()) { | |
2348 Register reg = left->as_register(); | |
2349 if (right->is_constant()) { | |
2350 int val = right->as_constant_ptr()->as_jint(); | |
2351 switch (code) { | |
2352 case lir_logic_and: __ andl (reg, val); break; | |
2353 case lir_logic_or: __ orl (reg, val); break; | |
2354 case lir_logic_xor: __ xorl (reg, val); break; | |
2355 default: ShouldNotReachHere(); | |
2356 } | |
2357 } else if (right->is_stack()) { | |
2358 // added support for stack operands | |
2359 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2360 switch (code) { | |
2361 case lir_logic_and: __ andl (reg, raddr); break; | |
2362 case lir_logic_or: __ orl (reg, raddr); break; | |
2363 case lir_logic_xor: __ xorl (reg, raddr); break; | |
2364 default: ShouldNotReachHere(); | |
2365 } | |
2366 } else { | |
2367 Register rright = right->as_register(); | |
2368 switch (code) { | |
304 | 2369 case lir_logic_and: __ andptr (reg, rright); break; |
2370 case lir_logic_or : __ orptr (reg, rright); break; | |
2371 case lir_logic_xor: __ xorptr (reg, rright); break; | |
0 | 2372 default: ShouldNotReachHere(); |
2373 } | |
2374 } | |
2375 move_regs(reg, dst->as_register()); | |
2376 } else { | |
2377 Register l_lo = left->as_register_lo(); | |
2378 Register l_hi = left->as_register_hi(); | |
2379 if (right->is_constant()) { | |
304 | 2380 #ifdef _LP64 |
2381 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); | |
2382 switch (code) { | |
2383 case lir_logic_and: | |
2384 __ andq(l_lo, rscratch1); | |
2385 break; | |
2386 case lir_logic_or: | |
2387 __ orq(l_lo, rscratch1); | |
2388 break; | |
2389 case lir_logic_xor: | |
2390 __ xorq(l_lo, rscratch1); | |
2391 break; | |
2392 default: ShouldNotReachHere(); | |
2393 } | |
2394 #else | |
0 | 2395 int r_lo = right->as_constant_ptr()->as_jint_lo(); |
2396 int r_hi = right->as_constant_ptr()->as_jint_hi(); | |
2397 switch (code) { | |
2398 case lir_logic_and: | |
2399 __ andl(l_lo, r_lo); | |
2400 __ andl(l_hi, r_hi); | |
2401 break; | |
2402 case lir_logic_or: | |
2403 __ orl(l_lo, r_lo); | |
2404 __ orl(l_hi, r_hi); | |
2405 break; | |
2406 case lir_logic_xor: | |
2407 __ xorl(l_lo, r_lo); | |
2408 __ xorl(l_hi, r_hi); | |
2409 break; | |
2410 default: ShouldNotReachHere(); | |
2411 } | |
304 | 2412 #endif // _LP64 |
0 | 2413 } else { |
2414 Register r_lo = right->as_register_lo(); | |
2415 Register r_hi = right->as_register_hi(); | |
2416 assert(l_lo != r_hi, "overwriting registers"); | |
2417 switch (code) { | |
2418 case lir_logic_and: | |
304 | 2419 __ andptr(l_lo, r_lo); |
2420 NOT_LP64(__ andptr(l_hi, r_hi);) | |
0 | 2421 break; |
2422 case lir_logic_or: | |
304 | 2423 __ orptr(l_lo, r_lo); |
2424 NOT_LP64(__ orptr(l_hi, r_hi);) | |
0 | 2425 break; |
2426 case lir_logic_xor: | |
304 | 2427 __ xorptr(l_lo, r_lo); |
2428 NOT_LP64(__ xorptr(l_hi, r_hi);) | |
0 | 2429 break; |
2430 default: ShouldNotReachHere(); | |
2431 } | |
2432 } | |
2433 | |
2434 Register dst_lo = dst->as_register_lo(); | |
2435 Register dst_hi = dst->as_register_hi(); | |
2436 | |
304 | 2437 #ifdef _LP64 |
2438 move_regs(l_lo, dst_lo); | |
2439 #else | |
0 | 2440 if (dst_lo == l_hi) { |
2441 assert(dst_hi != l_lo, "overwriting registers"); | |
2442 move_regs(l_hi, dst_hi); | |
2443 move_regs(l_lo, dst_lo); | |
2444 } else { | |
2445 assert(dst_lo != l_hi, "overwriting registers"); | |
2446 move_regs(l_lo, dst_lo); | |
2447 move_regs(l_hi, dst_hi); | |
2448 } | |
304 | 2449 #endif // _LP64 |
0 | 2450 } |
2451 } | |
2452 | |
2453 | |
2454 // we assume that rax, and rdx can be overwritten | |
2455 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { | |
2456 | |
2457 assert(left->is_single_cpu(), "left must be register"); | |
2458 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); | |
2459 assert(result->is_single_cpu(), "result must be register"); | |
2460 | |
2461 // assert(left->destroys_register(), "check"); | |
2462 // assert(right->destroys_register(), "check"); | |
2463 | |
2464 Register lreg = left->as_register(); | |
2465 Register dreg = result->as_register(); | |
2466 | |
2467 if (right->is_constant()) { | |
2468 int divisor = right->as_constant_ptr()->as_jint(); | |
2469 assert(divisor > 0 && is_power_of_2(divisor), "must be"); | |
2470 if (code == lir_idiv) { | |
2471 assert(lreg == rax, "must be rax,"); | |
2472 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2473 __ cdql(); // sign extend into rdx:rax | |
2474 if (divisor == 2) { | |
2475 __ subl(lreg, rdx); | |
2476 } else { | |
2477 __ andl(rdx, divisor - 1); | |
2478 __ addl(lreg, rdx); | |
2479 } | |
2480 __ sarl(lreg, log2_intptr(divisor)); | |
2481 move_regs(lreg, dreg); | |
2482 } else if (code == lir_irem) { | |
2483 Label done; | |
304 | 2484 __ mov(dreg, lreg); |
0 | 2485 __ andl(dreg, 0x80000000 | (divisor - 1)); |
2486 __ jcc(Assembler::positive, done); | |
2487 __ decrement(dreg); | |
2488 __ orl(dreg, ~(divisor - 1)); | |
2489 __ increment(dreg); | |
2490 __ bind(done); | |
2491 } else { | |
2492 ShouldNotReachHere(); | |
2493 } | |
2494 } else { | |
2495 Register rreg = right->as_register(); | |
2496 assert(lreg == rax, "left register must be rax,"); | |
2497 assert(rreg != rdx, "right register must not be rdx"); | |
2498 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2499 | |
2500 move_regs(lreg, rax); | |
2501 | |
2502 int idivl_offset = __ corrected_idivl(rreg); | |
2503 add_debug_info_for_div0(idivl_offset, info); | |
2504 if (code == lir_irem) { | |
2505 move_regs(rdx, dreg); // result is in rdx | |
2506 } else { | |
2507 move_regs(rax, dreg); | |
2508 } | |
2509 } | |
2510 } | |
2511 | |
2512 | |
2513 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { | |
2514 if (opr1->is_single_cpu()) { | |
2515 Register reg1 = opr1->as_register(); | |
2516 if (opr2->is_single_cpu()) { | |
2517 // cpu register - cpu register | |
304 | 2518 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2519 __ cmpptr(reg1, opr2->as_register()); | |
2520 } else { | |
2521 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); | |
2522 __ cmpl(reg1, opr2->as_register()); | |
2523 } | |
0 | 2524 } else if (opr2->is_stack()) { |
2525 // cpu register - stack | |
304 | 2526 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2527 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2528 } else { | |
2529 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2530 } | |
0 | 2531 } else if (opr2->is_constant()) { |
2532 // cpu register - constant | |
2533 LIR_Const* c = opr2->as_constant_ptr(); | |
2534 if (c->type() == T_INT) { | |
2535 __ cmpl(reg1, c->as_jint()); | |
304 | 2536 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2537 // In 64bit oops are single register | |
0 | 2538 jobject o = c->as_jobject(); |
2539 if (o == NULL) { | |
304 | 2540 __ cmpptr(reg1, (int32_t)NULL_WORD); |
0 | 2541 } else { |
304 | 2542 #ifdef _LP64 |
2543 __ movoop(rscratch1, o); | |
2544 __ cmpptr(reg1, rscratch1); | |
2545 #else | |
0 | 2546 __ cmpoop(reg1, c->as_jobject()); |
304 | 2547 #endif // _LP64 |
0 | 2548 } |
2549 } else { | |
2550 ShouldNotReachHere(); | |
2551 } | |
2552 // cpu register - address | |
2553 } else if (opr2->is_address()) { | |
2554 if (op->info() != NULL) { | |
2555 add_debug_info_for_null_check_here(op->info()); | |
2556 } | |
2557 __ cmpl(reg1, as_Address(opr2->as_address_ptr())); | |
2558 } else { | |
2559 ShouldNotReachHere(); | |
2560 } | |
2561 | |
2562 } else if(opr1->is_double_cpu()) { | |
2563 Register xlo = opr1->as_register_lo(); | |
2564 Register xhi = opr1->as_register_hi(); | |
2565 if (opr2->is_double_cpu()) { | |
304 | 2566 #ifdef _LP64 |
2567 __ cmpptr(xlo, opr2->as_register_lo()); | |
2568 #else | |
0 | 2569 // cpu register - cpu register |
2570 Register ylo = opr2->as_register_lo(); | |
2571 Register yhi = opr2->as_register_hi(); | |
2572 __ subl(xlo, ylo); | |
2573 __ sbbl(xhi, yhi); | |
2574 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { | |
2575 __ orl(xhi, xlo); | |
2576 } | |
304 | 2577 #endif // _LP64 |
0 | 2578 } else if (opr2->is_constant()) { |
2579 // cpu register - constant 0 | |
2580 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); | |
304 | 2581 #ifdef _LP64 |
2582 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); | |
2583 #else | |
0 | 2584 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); |
2585 __ orl(xhi, xlo); | |
304 | 2586 #endif // _LP64 |
0 | 2587 } else { |
2588 ShouldNotReachHere(); | |
2589 } | |
2590 | |
2591 } else if (opr1->is_single_xmm()) { | |
2592 XMMRegister reg1 = opr1->as_xmm_float_reg(); | |
2593 if (opr2->is_single_xmm()) { | |
2594 // xmm register - xmm register | |
2595 __ ucomiss(reg1, opr2->as_xmm_float_reg()); | |
2596 } else if (opr2->is_stack()) { | |
2597 // xmm register - stack | |
2598 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2599 } else if (opr2->is_constant()) { | |
2600 // xmm register - constant | |
2601 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); | |
2602 } else if (opr2->is_address()) { | |
2603 // xmm register - address | |
2604 if (op->info() != NULL) { | |
2605 add_debug_info_for_null_check_here(op->info()); | |
2606 } | |
2607 __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); | |
2608 } else { | |
2609 ShouldNotReachHere(); | |
2610 } | |
2611 | |
2612 } else if (opr1->is_double_xmm()) { | |
2613 XMMRegister reg1 = opr1->as_xmm_double_reg(); | |
2614 if (opr2->is_double_xmm()) { | |
2615 // xmm register - xmm register | |
2616 __ ucomisd(reg1, opr2->as_xmm_double_reg()); | |
2617 } else if (opr2->is_stack()) { | |
2618 // xmm register - stack | |
2619 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); | |
2620 } else if (opr2->is_constant()) { | |
2621 // xmm register - constant | |
2622 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); | |
2623 } else if (opr2->is_address()) { | |
2624 // xmm register - address | |
2625 if (op->info() != NULL) { | |
2626 add_debug_info_for_null_check_here(op->info()); | |
2627 } | |
2628 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); | |
2629 } else { | |
2630 ShouldNotReachHere(); | |
2631 } | |
2632 | |
2633 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { | |
2634 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); | |
2635 assert(opr2->is_fpu_register(), "both must be registers"); | |
2636 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2637 | |
2638 } else if (opr1->is_address() && opr2->is_constant()) { | |
304 | 2639 LIR_Const* c = opr2->as_constant_ptr(); |
2640 #ifdef _LP64 | |
2641 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { | |
2642 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); | |
2643 __ movoop(rscratch1, c->as_jobject()); | |
2644 } | |
2645 #endif // LP64 | |
0 | 2646 if (op->info() != NULL) { |
2647 add_debug_info_for_null_check_here(op->info()); | |
2648 } | |
2649 // special case: address - constant | |
2650 LIR_Address* addr = opr1->as_address_ptr(); | |
2651 if (c->type() == T_INT) { | |
2652 __ cmpl(as_Address(addr), c->as_jint()); | |
304 | 2653 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2654 #ifdef _LP64 | |
2655 // %%% Make this explode if addr isn't reachable until we figure out a | |
2656 // better strategy by giving noreg as the temp for as_Address | |
2657 __ cmpptr(rscratch1, as_Address(addr, noreg)); | |
2658 #else | |
0 | 2659 __ cmpoop(as_Address(addr), c->as_jobject()); |
304 | 2660 #endif // _LP64 |
0 | 2661 } else { |
2662 ShouldNotReachHere(); | |
2663 } | |
2664 | |
2665 } else { | |
2666 ShouldNotReachHere(); | |
2667 } | |
2668 } | |
2669 | |
2670 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { | |
2671 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { | |
2672 if (left->is_single_xmm()) { | |
2673 assert(right->is_single_xmm(), "must match"); | |
2674 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2675 } else if (left->is_double_xmm()) { | |
2676 assert(right->is_double_xmm(), "must match"); | |
2677 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2678 | |
2679 } else { | |
2680 assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); | |
2681 assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); | |
2682 | |
2683 assert(left->fpu() == 0, "left must be on TOS"); | |
2684 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), | |
2685 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2686 } | |
2687 } else { | |
2688 assert(code == lir_cmp_l2i, "check"); | |
304 | 2689 #ifdef _LP64 |
2690 Register dest = dst->as_register(); | |
2691 __ xorptr(dest, dest); | |
2692 Label high, done; | |
2693 __ cmpptr(left->as_register_lo(), right->as_register_lo()); | |
2694 __ jcc(Assembler::equal, done); | |
2695 __ jcc(Assembler::greater, high); | |
2696 __ decrement(dest); | |
2697 __ jmp(done); | |
2698 __ bind(high); | |
2699 __ increment(dest); | |
2700 | |
2701 __ bind(done); | |
2702 | |
2703 #else | |
0 | 2704 __ lcmp2int(left->as_register_hi(), |
2705 left->as_register_lo(), | |
2706 right->as_register_hi(), | |
2707 right->as_register_lo()); | |
2708 move_regs(left->as_register_hi(), dst->as_register()); | |
304 | 2709 #endif // _LP64 |
0 | 2710 } |
2711 } | |
2712 | |
2713 | |
2714 void LIR_Assembler::align_call(LIR_Code code) { | |
2715 if (os::is_MP()) { | |
2716 // make sure that the displacement word of the call ends up word aligned | |
2717 int offset = __ offset(); | |
2718 switch (code) { | |
2719 case lir_static_call: | |
2720 case lir_optvirtual_call: | |
1295 | 2721 case lir_dynamic_call: |
0 | 2722 offset += NativeCall::displacement_offset; |
2723 break; | |
2724 case lir_icvirtual_call: | |
2725 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; | |
2726 break; | |
2727 case lir_virtual_call: // currently, sparc-specific for niagara | |
2728 default: ShouldNotReachHere(); | |
2729 } | |
2730 while (offset++ % BytesPerWord != 0) { | |
2731 __ nop(); | |
2732 } | |
2733 } | |
2734 } | |
2735 | |
2736 | |
1295 | 2737 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { |
0 | 2738 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, |
2739 "must be aligned"); | |
1295 | 2740 __ call(AddressLiteral(op->addr(), rtype)); |
2741 add_call_info(code_offset(), op->info(), op->is_method_handle_invoke()); | |
0 | 2742 } |
2743 | |
2744 | |
1295 | 2745 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { |
0 | 2746 RelocationHolder rh = virtual_call_Relocation::spec(pc()); |
2747 __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); | |
2748 assert(!os::is_MP() || | |
2749 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, | |
2750 "must be aligned"); | |
1295 | 2751 __ call(AddressLiteral(op->addr(), rh)); |
2752 add_call_info(code_offset(), op->info(), op->is_method_handle_invoke()); | |
0 | 2753 } |
2754 | |
2755 | |
2756 /* Currently, vtable-dispatch is only enabled for sparc platforms */ | |
1295 | 2757 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { |
0 | 2758 ShouldNotReachHere(); |
2759 } | |
2760 | |
1295 | 2761 |
2762 void LIR_Assembler::preserve_SP() { | |
2763 __ movptr(rbp, rsp); | |
2764 } | |
2765 | |
2766 | |
2767 void LIR_Assembler::restore_SP() { | |
2768 __ movptr(rsp, rbp); | |
2769 } | |
2770 | |
2771 | |
0 | 2772 void LIR_Assembler::emit_static_call_stub() { |
2773 address call_pc = __ pc(); | |
2774 address stub = __ start_a_stub(call_stub_size); | |
2775 if (stub == NULL) { | |
2776 bailout("static call stub overflow"); | |
2777 return; | |
2778 } | |
2779 | |
2780 int start = __ offset(); | |
2781 if (os::is_MP()) { | |
2782 // make sure that the displacement word of the call ends up word aligned | |
2783 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; | |
2784 while (offset++ % BytesPerWord != 0) { | |
2785 __ nop(); | |
2786 } | |
2787 } | |
2788 __ relocate(static_stub_Relocation::spec(call_pc)); | |
2789 __ movoop(rbx, (jobject)NULL); | |
2790 // must be set to -1 at code generation time | |
2791 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); | |
304 | 2792 // On 64bit this will die since it will take a movq & jmp, must be only a jmp |
2793 __ jump(RuntimeAddress(__ pc())); | |
0 | 2794 |
2795 assert(__ offset() - start <= call_stub_size, "stub too big") | |
2796 __ end_a_stub(); | |
2797 } | |
2798 | |
2799 | |
2800 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info, bool unwind) { | |
2801 assert(exceptionOop->as_register() == rax, "must match"); | |
2802 assert(unwind || exceptionPC->as_register() == rdx, "must match"); | |
2803 | |
2804 // exception object is not added to oop map by LinearScan | |
2805 // (LinearScan assumes that no oops are in fixed registers) | |
2806 info->add_register_oop(exceptionOop); | |
2807 Runtime1::StubID unwind_id; | |
2808 | |
2809 if (!unwind) { | |
2810 // get current pc information | |
2811 // pc is only needed if the method has an exception handler, the unwind code does not need it. | |
2812 int pc_for_athrow_offset = __ offset(); | |
2813 InternalAddress pc_for_athrow(__ pc()); | |
2814 __ lea(exceptionPC->as_register(), pc_for_athrow); | |
2815 add_call_info(pc_for_athrow_offset, info); // for exception handler | |
2816 | |
2817 __ verify_not_null_oop(rax); | |
2818 // search an exception handler (rax: exception oop, rdx: throwing pc) | |
2819 if (compilation()->has_fpu_code()) { | |
2820 unwind_id = Runtime1::handle_exception_id; | |
2821 } else { | |
2822 unwind_id = Runtime1::handle_exception_nofpu_id; | |
2823 } | |
1295 | 2824 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); |
0 | 2825 } else { |
1295 | 2826 // remove the activation |
2827 __ remove_frame(initial_frame_size_in_bytes()); | |
2828 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id))); | |
0 | 2829 } |
2830 | |
2831 // enough room for two byte trap | |
2832 __ nop(); | |
2833 } | |
2834 | |
2835 | |
2836 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { | |
2837 | |
2838 // optimized version for linear scan: | |
2839 // * count must be already in ECX (guaranteed by LinearScan) | |
2840 // * left and dest must be equal | |
2841 // * tmp must be unused | |
2842 assert(count->as_register() == SHIFT_count, "count must be in ECX"); | |
2843 assert(left == dest, "left and dest must be equal"); | |
2844 assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); | |
2845 | |
2846 if (left->is_single_cpu()) { | |
2847 Register value = left->as_register(); | |
2848 assert(value != SHIFT_count, "left cannot be ECX"); | |
2849 | |
2850 switch (code) { | |
2851 case lir_shl: __ shll(value); break; | |
2852 case lir_shr: __ sarl(value); break; | |
2853 case lir_ushr: __ shrl(value); break; | |
2854 default: ShouldNotReachHere(); | |
2855 } | |
2856 } else if (left->is_double_cpu()) { | |
2857 Register lo = left->as_register_lo(); | |
2858 Register hi = left->as_register_hi(); | |
2859 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); | |
304 | 2860 #ifdef _LP64 |
2861 switch (code) { | |
2862 case lir_shl: __ shlptr(lo); break; | |
2863 case lir_shr: __ sarptr(lo); break; | |
2864 case lir_ushr: __ shrptr(lo); break; | |
2865 default: ShouldNotReachHere(); | |
2866 } | |
2867 #else | |
0 | 2868 |
2869 switch (code) { | |
2870 case lir_shl: __ lshl(hi, lo); break; | |
2871 case lir_shr: __ lshr(hi, lo, true); break; | |
2872 case lir_ushr: __ lshr(hi, lo, false); break; | |
2873 default: ShouldNotReachHere(); | |
2874 } | |
304 | 2875 #endif // LP64 |
0 | 2876 } else { |
2877 ShouldNotReachHere(); | |
2878 } | |
2879 } | |
2880 | |
2881 | |
2882 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { | |
2883 if (dest->is_single_cpu()) { | |
2884 // first move left into dest so that left is not destroyed by the shift | |
2885 Register value = dest->as_register(); | |
2886 count = count & 0x1F; // Java spec | |
2887 | |
2888 move_regs(left->as_register(), value); | |
2889 switch (code) { | |
2890 case lir_shl: __ shll(value, count); break; | |
2891 case lir_shr: __ sarl(value, count); break; | |
2892 case lir_ushr: __ shrl(value, count); break; | |
2893 default: ShouldNotReachHere(); | |
2894 } | |
2895 } else if (dest->is_double_cpu()) { | |
304 | 2896 #ifndef _LP64 |
0 | 2897 Unimplemented(); |
304 | 2898 #else |
2899 // first move left into dest so that left is not destroyed by the shift | |
2900 Register value = dest->as_register_lo(); | |
2901 count = count & 0x1F; // Java spec | |
2902 | |
2903 move_regs(left->as_register_lo(), value); | |
2904 switch (code) { | |
2905 case lir_shl: __ shlptr(value, count); break; | |
2906 case lir_shr: __ sarptr(value, count); break; | |
2907 case lir_ushr: __ shrptr(value, count); break; | |
2908 default: ShouldNotReachHere(); | |
2909 } | |
2910 #endif // _LP64 | |
0 | 2911 } else { |
2912 ShouldNotReachHere(); | |
2913 } | |
2914 } | |
2915 | |
2916 | |
2917 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { | |
2918 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2919 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2920 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 2921 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); |
0 | 2922 } |
2923 | |
2924 | |
2925 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { | |
2926 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2927 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2928 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 2929 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); |
0 | 2930 } |
2931 | |
2932 | |
2933 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { | |
2934 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2935 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2936 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
2937 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); | |
2938 } | |
2939 | |
2940 | |
2941 // This code replaces a call to arraycopy; no exception may | |
2942 // be thrown in this code, they must be thrown in the System.arraycopy | |
2943 // activation frame; we could save some checks if this would not be the case | |
2944 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { | |
2945 ciArrayKlass* default_type = op->expected_type(); | |
2946 Register src = op->src()->as_register(); | |
2947 Register dst = op->dst()->as_register(); | |
2948 Register src_pos = op->src_pos()->as_register(); | |
2949 Register dst_pos = op->dst_pos()->as_register(); | |
2950 Register length = op->length()->as_register(); | |
2951 Register tmp = op->tmp()->as_register(); | |
2952 | |
2953 CodeStub* stub = op->stub(); | |
2954 int flags = op->flags(); | |
2955 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; | |
2956 if (basic_type == T_ARRAY) basic_type = T_OBJECT; | |
2957 | |
2958 // if we don't know anything or it's an object array, just go through the generic arraycopy | |
2959 if (default_type == NULL) { | |
2960 Label done; | |
2961 // save outgoing arguments on stack in case call to System.arraycopy is needed | |
2962 // HACK ALERT. This code used to push the parameters in a hardwired fashion | |
2963 // for interpreter calling conventions. Now we have to do it in new style conventions. | |
2964 // For the moment until C1 gets the new register allocator I just force all the | |
2965 // args to the right place (except the register args) and then on the back side | |
2966 // reload the register args properly if we go slow path. Yuck | |
2967 | |
2968 // These are proper for the calling convention | |
2969 | |
2970 store_parameter(length, 2); | |
2971 store_parameter(dst_pos, 1); | |
2972 store_parameter(dst, 0); | |
2973 | |
2974 // these are just temporary placements until we need to reload | |
2975 store_parameter(src_pos, 3); | |
2976 store_parameter(src, 4); | |
304 | 2977 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) |
2978 | |
2979 address entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); | |
0 | 2980 |
2981 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint | |
304 | 2982 #ifdef _LP64 |
2983 // The arguments are in java calling convention so we can trivially shift them to C | |
2984 // convention | |
2985 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
2986 __ mov(c_rarg0, j_rarg0); | |
2987 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
2988 __ mov(c_rarg1, j_rarg1); | |
2989 assert_different_registers(c_rarg2, j_rarg3, j_rarg4); | |
2990 __ mov(c_rarg2, j_rarg2); | |
2991 assert_different_registers(c_rarg3, j_rarg4); | |
2992 __ mov(c_rarg3, j_rarg3); | |
2993 #ifdef _WIN64 | |
2994 // Allocate abi space for args but be sure to keep stack aligned | |
2995 __ subptr(rsp, 6*wordSize); | |
2996 store_parameter(j_rarg4, 4); | |
2997 __ call(RuntimeAddress(entry)); | |
2998 __ addptr(rsp, 6*wordSize); | |
2999 #else | |
3000 __ mov(c_rarg4, j_rarg4); | |
3001 __ call(RuntimeAddress(entry)); | |
3002 #endif // _WIN64 | |
3003 #else | |
3004 __ push(length); | |
3005 __ push(dst_pos); | |
3006 __ push(dst); | |
3007 __ push(src_pos); | |
3008 __ push(src); | |
0 | 3009 __ call_VM_leaf(entry, 5); // removes pushed parameter from the stack |
3010 | |
304 | 3011 #endif // _LP64 |
3012 | |
0 | 3013 __ cmpl(rax, 0); |
3014 __ jcc(Assembler::equal, *stub->continuation()); | |
3015 | |
3016 // Reload values from the stack so they are where the stub | |
3017 // expects them. | |
304 | 3018 __ movptr (dst, Address(rsp, 0*BytesPerWord)); |
3019 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); | |
3020 __ movptr (length, Address(rsp, 2*BytesPerWord)); | |
3021 __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); | |
3022 __ movptr (src, Address(rsp, 4*BytesPerWord)); | |
0 | 3023 __ jmp(*stub->entry()); |
3024 | |
3025 __ bind(*stub->continuation()); | |
3026 return; | |
3027 } | |
3028 | |
3029 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); | |
3030 | |
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3031 int elem_size = type2aelembytes(basic_type); |
0 | 3032 int shift_amount; |
3033 Address::ScaleFactor scale; | |
3034 | |
3035 switch (elem_size) { | |
3036 case 1 : | |
3037 shift_amount = 0; | |
3038 scale = Address::times_1; | |
3039 break; | |
3040 case 2 : | |
3041 shift_amount = 1; | |
3042 scale = Address::times_2; | |
3043 break; | |
3044 case 4 : | |
3045 shift_amount = 2; | |
3046 scale = Address::times_4; | |
3047 break; | |
3048 case 8 : | |
3049 shift_amount = 3; | |
3050 scale = Address::times_8; | |
3051 break; | |
3052 default: | |
3053 ShouldNotReachHere(); | |
3054 } | |
3055 | |
3056 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); | |
3057 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); | |
3058 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); | |
3059 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); | |
3060 | |
304 | 3061 // length and pos's are all sign extended at this point on 64bit |
3062 | |
0 | 3063 // test for NULL |
3064 if (flags & LIR_OpArrayCopy::src_null_check) { | |
304 | 3065 __ testptr(src, src); |
0 | 3066 __ jcc(Assembler::zero, *stub->entry()); |
3067 } | |
3068 if (flags & LIR_OpArrayCopy::dst_null_check) { | |
304 | 3069 __ testptr(dst, dst); |
0 | 3070 __ jcc(Assembler::zero, *stub->entry()); |
3071 } | |
3072 | |
3073 // check if negative | |
3074 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { | |
3075 __ testl(src_pos, src_pos); | |
3076 __ jcc(Assembler::less, *stub->entry()); | |
3077 } | |
3078 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { | |
3079 __ testl(dst_pos, dst_pos); | |
3080 __ jcc(Assembler::less, *stub->entry()); | |
3081 } | |
3082 if (flags & LIR_OpArrayCopy::length_positive_check) { | |
3083 __ testl(length, length); | |
3084 __ jcc(Assembler::less, *stub->entry()); | |
3085 } | |
3086 | |
3087 if (flags & LIR_OpArrayCopy::src_range_check) { | |
304 | 3088 __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); |
0 | 3089 __ cmpl(tmp, src_length_addr); |
3090 __ jcc(Assembler::above, *stub->entry()); | |
3091 } | |
3092 if (flags & LIR_OpArrayCopy::dst_range_check) { | |
304 | 3093 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); |
0 | 3094 __ cmpl(tmp, dst_length_addr); |
3095 __ jcc(Assembler::above, *stub->entry()); | |
3096 } | |
3097 | |
3098 if (flags & LIR_OpArrayCopy::type_check) { | |
304 | 3099 __ movptr(tmp, src_klass_addr); |
3100 __ cmpptr(tmp, dst_klass_addr); | |
0 | 3101 __ jcc(Assembler::notEqual, *stub->entry()); |
3102 } | |
3103 | |
3104 #ifdef ASSERT | |
3105 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { | |
3106 // Sanity check the known type with the incoming class. For the | |
3107 // primitive case the types must match exactly with src.klass and | |
3108 // dst.klass each exactly matching the default type. For the | |
3109 // object array case, if no type check is needed then either the | |
3110 // dst type is exactly the expected type and the src type is a | |
3111 // subtype which we can't check or src is the same array as dst | |
3112 // but not necessarily exactly of type default_type. | |
3113 Label known_ok, halt; | |
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3114 __ movoop(tmp, default_type->constant_encoding()); |
0 | 3115 if (basic_type != T_OBJECT) { |
304 | 3116 __ cmpptr(tmp, dst_klass_addr); |
0 | 3117 __ jcc(Assembler::notEqual, halt); |
304 | 3118 __ cmpptr(tmp, src_klass_addr); |
0 | 3119 __ jcc(Assembler::equal, known_ok); |
3120 } else { | |
304 | 3121 __ cmpptr(tmp, dst_klass_addr); |
0 | 3122 __ jcc(Assembler::equal, known_ok); |
304 | 3123 __ cmpptr(src, dst); |
0 | 3124 __ jcc(Assembler::equal, known_ok); |
3125 } | |
3126 __ bind(halt); | |
3127 __ stop("incorrect type information in arraycopy"); | |
3128 __ bind(known_ok); | |
3129 } | |
3130 #endif | |
3131 | |
304 | 3132 if (shift_amount > 0 && basic_type != T_OBJECT) { |
3133 __ shlptr(length, shift_amount); | |
3134 } | |
3135 | |
3136 #ifdef _LP64 | |
3137 assert_different_registers(c_rarg0, dst, dst_pos, length); | |
1060 | 3138 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null |
304 | 3139 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3140 assert_different_registers(c_rarg1, length); | |
1060 | 3141 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null |
304 | 3142 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3143 __ mov(c_rarg2, length); | |
3144 | |
3145 #else | |
3146 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
0 | 3147 store_parameter(tmp, 0); |
304 | 3148 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
0 | 3149 store_parameter(tmp, 1); |
3150 store_parameter(length, 2); | |
304 | 3151 #endif // _LP64 |
0 | 3152 if (basic_type == T_OBJECT) { |
3153 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy), 0); | |
3154 } else { | |
3155 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy), 0); | |
3156 } | |
3157 | |
3158 __ bind(*stub->continuation()); | |
3159 } | |
3160 | |
3161 | |
3162 void LIR_Assembler::emit_lock(LIR_OpLock* op) { | |
3163 Register obj = op->obj_opr()->as_register(); // may not be an oop | |
3164 Register hdr = op->hdr_opr()->as_register(); | |
3165 Register lock = op->lock_opr()->as_register(); | |
3166 if (!UseFastLocking) { | |
3167 __ jmp(*op->stub()->entry()); | |
3168 } else if (op->code() == lir_lock) { | |
3169 Register scratch = noreg; | |
3170 if (UseBiasedLocking) { | |
3171 scratch = op->scratch_opr()->as_register(); | |
3172 } | |
3173 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3174 // add debug info for NullPointerException only if one is possible | |
3175 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); | |
3176 if (op->info() != NULL) { | |
3177 add_debug_info_for_null_check(null_check_offset, op->info()); | |
3178 } | |
3179 // done | |
3180 } else if (op->code() == lir_unlock) { | |
3181 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3182 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); | |
3183 } else { | |
3184 Unimplemented(); | |
3185 } | |
3186 __ bind(*op->stub()->continuation()); | |
3187 } | |
3188 | |
3189 | |
3190 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { | |
3191 ciMethod* method = op->profiled_method(); | |
3192 int bci = op->profiled_bci(); | |
3193 | |
3194 // Update counter for all call types | |
3195 ciMethodData* md = method->method_data(); | |
3196 if (md == NULL) { | |
3197 bailout("out of memory building methodDataOop"); | |
3198 return; | |
3199 } | |
3200 ciProfileData* data = md->bci_to_data(bci); | |
3201 assert(data->is_CounterData(), "need CounterData for calls"); | |
3202 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); | |
3203 Register mdo = op->mdo()->as_register(); | |
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3204 __ movoop(mdo, md->constant_encoding()); |
0 | 3205 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); |
3206 Bytecodes::Code bc = method->java_code_at_bci(bci); | |
3207 // Perform additional virtual call profiling for invokevirtual and | |
3208 // invokeinterface bytecodes | |
3209 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && | |
3210 Tier1ProfileVirtualCalls) { | |
3211 assert(op->recv()->is_single_cpu(), "recv must be allocated"); | |
3212 Register recv = op->recv()->as_register(); | |
3213 assert_different_registers(mdo, recv); | |
3214 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); | |
3215 ciKlass* known_klass = op->known_holder(); | |
3216 if (Tier1OptimizeVirtualCallProfiling && known_klass != NULL) { | |
3217 // We know the type that will be seen at this call site; we can | |
3218 // statically update the methodDataOop rather than needing to do | |
3219 // dynamic tests on the receiver type | |
3220 | |
3221 // NOTE: we should probably put a lock around this search to | |
3222 // avoid collisions by concurrent compilations | |
3223 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; | |
3224 uint i; | |
3225 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3226 ciKlass* receiver = vc_data->receiver(i); | |
3227 if (known_klass->equals(receiver)) { | |
3228 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
3229 __ addl(data_addr, DataLayout::counter_increment); | |
3230 return; | |
3231 } | |
3232 } | |
3233 | |
3234 // Receiver type not found in profile data; select an empty slot | |
3235 | |
3236 // Note that this is less efficient than it should be because it | |
3237 // always does a write to the receiver part of the | |
3238 // VirtualCallData rather than just the first time | |
3239 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3240 ciKlass* receiver = vc_data->receiver(i); | |
3241 if (receiver == NULL) { | |
3242 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
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3243 __ movoop(recv_addr, known_klass->constant_encoding()); |
0 | 3244 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); |
3245 __ addl(data_addr, DataLayout::counter_increment); | |
3246 return; | |
3247 } | |
3248 } | |
3249 } else { | |
304 | 3250 __ movptr(recv, Address(recv, oopDesc::klass_offset_in_bytes())); |
0 | 3251 Label update_done; |
3252 uint i; | |
3253 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3254 Label next_test; | |
3255 // See if the receiver is receiver[n]. | |
304 | 3256 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)))); |
0 | 3257 __ jcc(Assembler::notEqual, next_test); |
3258 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
3259 __ addl(data_addr, DataLayout::counter_increment); | |
3260 __ jmp(update_done); | |
3261 __ bind(next_test); | |
3262 } | |
3263 | |
3264 // Didn't find receiver; find next empty slot and fill it in | |
3265 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3266 Label next_test; | |
3267 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
304 | 3268 __ cmpptr(recv_addr, (int32_t)NULL_WORD); |
0 | 3269 __ jcc(Assembler::notEqual, next_test); |
304 | 3270 __ movptr(recv_addr, recv); |
0 | 3271 __ movl(Address(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))), DataLayout::counter_increment); |
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3272 __ jmp(update_done); |
0 | 3273 __ bind(next_test); |
3274 } | |
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3275 // Receiver did not match any saved receiver and there is no empty row for it. |
1251
576e77447e3c
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3276 // Increment total counter to indicate polymorphic case. |
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3277 __ addl(counter_addr, DataLayout::counter_increment); |
0 | 3278 |
3279 __ bind(update_done); | |
3280 } | |
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|
3281 } else { |
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|
3282 // Static call |
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3283 __ addl(counter_addr, DataLayout::counter_increment); |
0 | 3284 } |
3285 } | |
3286 | |
3287 | |
3288 void LIR_Assembler::emit_delay(LIR_OpDelay*) { | |
3289 Unimplemented(); | |
3290 } | |
3291 | |
3292 | |
3293 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { | |
304 | 3294 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); |
0 | 3295 } |
3296 | |
3297 | |
3298 void LIR_Assembler::align_backward_branch_target() { | |
3299 __ align(BytesPerWord); | |
3300 } | |
3301 | |
3302 | |
3303 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { | |
3304 if (left->is_single_cpu()) { | |
3305 __ negl(left->as_register()); | |
3306 move_regs(left->as_register(), dest->as_register()); | |
3307 | |
3308 } else if (left->is_double_cpu()) { | |
3309 Register lo = left->as_register_lo(); | |
304 | 3310 #ifdef _LP64 |
3311 Register dst = dest->as_register_lo(); | |
3312 __ movptr(dst, lo); | |
3313 __ negptr(dst); | |
3314 #else | |
0 | 3315 Register hi = left->as_register_hi(); |
3316 __ lneg(hi, lo); | |
3317 if (dest->as_register_lo() == hi) { | |
3318 assert(dest->as_register_hi() != lo, "destroying register"); | |
3319 move_regs(hi, dest->as_register_hi()); | |
3320 move_regs(lo, dest->as_register_lo()); | |
3321 } else { | |
3322 move_regs(lo, dest->as_register_lo()); | |
3323 move_regs(hi, dest->as_register_hi()); | |
3324 } | |
304 | 3325 #endif // _LP64 |
0 | 3326 |
3327 } else if (dest->is_single_xmm()) { | |
3328 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { | |
3329 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); | |
3330 } | |
3331 __ xorps(dest->as_xmm_float_reg(), | |
3332 ExternalAddress((address)float_signflip_pool)); | |
3333 | |
3334 } else if (dest->is_double_xmm()) { | |
3335 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { | |
3336 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); | |
3337 } | |
3338 __ xorpd(dest->as_xmm_double_reg(), | |
3339 ExternalAddress((address)double_signflip_pool)); | |
3340 | |
3341 } else if (left->is_single_fpu() || left->is_double_fpu()) { | |
3342 assert(left->fpu() == 0, "arg must be on TOS"); | |
3343 assert(dest->fpu() == 0, "dest must be TOS"); | |
3344 __ fchs(); | |
3345 | |
3346 } else { | |
3347 ShouldNotReachHere(); | |
3348 } | |
3349 } | |
3350 | |
3351 | |
3352 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { | |
3353 assert(addr->is_address() && dest->is_register(), "check"); | |
304 | 3354 Register reg; |
3355 reg = dest->as_pointer_register(); | |
3356 __ lea(reg, as_Address(addr->as_address_ptr())); | |
0 | 3357 } |
3358 | |
3359 | |
3360 | |
3361 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { | |
3362 assert(!tmp->is_valid(), "don't need temporary"); | |
3363 __ call(RuntimeAddress(dest)); | |
3364 if (info != NULL) { | |
3365 add_call_info_here(info); | |
3366 } | |
3367 } | |
3368 | |
3369 | |
3370 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { | |
3371 assert(type == T_LONG, "only for volatile long fields"); | |
3372 | |
3373 if (info != NULL) { | |
3374 add_debug_info_for_null_check_here(info); | |
3375 } | |
3376 | |
3377 if (src->is_double_xmm()) { | |
3378 if (dest->is_double_cpu()) { | |
304 | 3379 #ifdef _LP64 |
3380 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); | |
3381 #else | |
3382 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); | |
0 | 3383 __ psrlq(src->as_xmm_double_reg(), 32); |
304 | 3384 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); |
3385 #endif // _LP64 | |
0 | 3386 } else if (dest->is_double_stack()) { |
3387 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); | |
3388 } else if (dest->is_address()) { | |
3389 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); | |
3390 } else { | |
3391 ShouldNotReachHere(); | |
3392 } | |
3393 | |
3394 } else if (dest->is_double_xmm()) { | |
3395 if (src->is_double_stack()) { | |
3396 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); | |
3397 } else if (src->is_address()) { | |
3398 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); | |
3399 } else { | |
3400 ShouldNotReachHere(); | |
3401 } | |
3402 | |
3403 } else if (src->is_double_fpu()) { | |
3404 assert(src->fpu_regnrLo() == 0, "must be TOS"); | |
3405 if (dest->is_double_stack()) { | |
3406 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); | |
3407 } else if (dest->is_address()) { | |
3408 __ fistp_d(as_Address(dest->as_address_ptr())); | |
3409 } else { | |
3410 ShouldNotReachHere(); | |
3411 } | |
3412 | |
3413 } else if (dest->is_double_fpu()) { | |
3414 assert(dest->fpu_regnrLo() == 0, "must be TOS"); | |
3415 if (src->is_double_stack()) { | |
3416 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); | |
3417 } else if (src->is_address()) { | |
3418 __ fild_d(as_Address(src->as_address_ptr())); | |
3419 } else { | |
3420 ShouldNotReachHere(); | |
3421 } | |
3422 } else { | |
3423 ShouldNotReachHere(); | |
3424 } | |
3425 } | |
3426 | |
3427 | |
3428 void LIR_Assembler::membar() { | |
304 | 3429 // QQQ sparc TSO uses this, |
3430 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); | |
0 | 3431 } |
3432 | |
3433 void LIR_Assembler::membar_acquire() { | |
3434 // No x86 machines currently require load fences | |
3435 // __ load_fence(); | |
3436 } | |
3437 | |
3438 void LIR_Assembler::membar_release() { | |
3439 // No x86 machines currently require store fences | |
3440 // __ store_fence(); | |
3441 } | |
3442 | |
3443 void LIR_Assembler::get_thread(LIR_Opr result_reg) { | |
3444 assert(result_reg->is_register(), "check"); | |
304 | 3445 #ifdef _LP64 |
3446 // __ get_thread(result_reg->as_register_lo()); | |
3447 __ mov(result_reg->as_register(), r15_thread); | |
3448 #else | |
0 | 3449 __ get_thread(result_reg->as_register()); |
304 | 3450 #endif // _LP64 |
0 | 3451 } |
3452 | |
3453 | |
3454 void LIR_Assembler::peephole(LIR_List*) { | |
3455 // do nothing for now | |
3456 } | |
3457 | |
3458 | |
3459 #undef __ |