Mercurial > hg > truffle
annotate src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 1565:ab102d5d923e
6939207: refactor constant pool index processing
Summary: Factored cleanup of instruction decode which prepares for enhanced ldc semantics.
Reviewed-by: twisti
author | jrose |
---|---|
date | Sun, 23 May 2010 01:38:26 -0700 |
parents | 61b2245abf36 |
children | 87fc6aca31ab |
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 |
1378
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458 // Emit the code to remove the frame from the stack in the exception |
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459 // unwind path. |
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460 int LIR_Assembler::emit_unwind_handler() { |
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461 #ifndef PRODUCT |
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462 if (CommentedAssembly) { |
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463 _masm->block_comment("Unwind handler"); |
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464 } |
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465 #endif |
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466 |
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467 int offset = code_offset(); |
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468 |
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469 // Fetch the exception from TLS and clear out exception related thread state |
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470 __ get_thread(rsi); |
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471 __ movptr(rax, Address(rsi, JavaThread::exception_oop_offset())); |
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472 __ movptr(Address(rsi, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD); |
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473 __ movptr(Address(rsi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD); |
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474 |
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475 __ bind(_unwind_handler_entry); |
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476 __ verify_not_null_oop(rax); |
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477 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
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478 __ mov(rsi, rax); // Preserve the exception |
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479 } |
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480 |
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481 // Preform needed unlocking |
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482 MonitorExitStub* stub = NULL; |
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483 if (method()->is_synchronized()) { |
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484 monitor_address(0, FrameMap::rax_opr); |
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485 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0); |
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486 __ unlock_object(rdi, rbx, rax, *stub->entry()); |
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487 __ bind(*stub->continuation()); |
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488 } |
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489 |
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490 if (compilation()->env()->dtrace_method_probes()) { |
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491 __ movoop(Address(rsp, 0), method()->constant_encoding()); |
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492 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit))); |
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493 } |
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494 |
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495 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
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496 __ mov(rax, rsi); // Restore the exception |
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497 } |
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498 |
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499 // remove the activation and dispatch to the unwind handler |
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500 __ remove_frame(initial_frame_size_in_bytes()); |
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501 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id))); |
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502 |
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503 // Emit the slow path assembly |
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504 if (stub != NULL) { |
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505 stub->emit_code(this); |
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506 } |
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507 |
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508 return offset; |
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509 } |
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510 |
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511 |
1204 | 512 int LIR_Assembler::emit_deopt_handler() { |
0 | 513 // if the last instruction is a call (typically to do a throw which |
514 // is coming at the end after block reordering) the return address | |
515 // must still point into the code area in order to avoid assertion | |
516 // failures when searching for the corresponding bci => add a nop | |
517 // (was bug 5/14/1999 - gri) | |
518 __ nop(); | |
519 | |
520 // generate code for exception handler | |
521 address handler_base = __ start_a_stub(deopt_handler_size); | |
522 if (handler_base == NULL) { | |
523 // not enough space left for the handler | |
524 bailout("deopt handler overflow"); | |
1204 | 525 return -1; |
0 | 526 } |
1204 | 527 |
0 | 528 int offset = code_offset(); |
529 InternalAddress here(__ pc()); | |
1295 | 530 |
0 | 531 __ pushptr(here.addr()); |
532 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack())); | |
1295 | 533 |
0 | 534 assert(code_offset() - offset <= deopt_handler_size, "overflow"); |
535 __ end_a_stub(); | |
536 | |
1204 | 537 return offset; |
0 | 538 } |
539 | |
540 | |
541 // This is the fast version of java.lang.String.compare; it has not | |
542 // OSR-entry and therefore, we generate a slow version for OSR's | |
543 void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) { | |
304 | 544 __ movptr (rbx, rcx); // receiver is in rcx |
545 __ movptr (rax, arg1->as_register()); | |
0 | 546 |
547 // Get addresses of first characters from both Strings | |
304 | 548 __ movptr (rsi, Address(rax, java_lang_String::value_offset_in_bytes())); |
549 __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes())); | |
550 __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 551 |
552 | |
553 // rbx, may be NULL | |
554 add_debug_info_for_null_check_here(info); | |
304 | 555 __ movptr (rdi, Address(rbx, java_lang_String::value_offset_in_bytes())); |
556 __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes())); | |
557 __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
0 | 558 |
559 // compute minimum length (in rax) and difference of lengths (on top of stack) | |
560 if (VM_Version::supports_cmov()) { | |
304 | 561 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); |
562 __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes())); | |
563 __ mov (rcx, rbx); | |
564 __ subptr (rbx, rax); // subtract lengths | |
565 __ push (rbx); // result | |
566 __ cmov (Assembler::lessEqual, rax, rcx); | |
0 | 567 } else { |
568 Label L; | |
304 | 569 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); |
570 __ movl (rcx, Address(rax, java_lang_String::count_offset_in_bytes())); | |
571 __ mov (rax, rbx); | |
572 __ subptr (rbx, rcx); | |
573 __ push (rbx); | |
574 __ jcc (Assembler::lessEqual, L); | |
575 __ mov (rax, rcx); | |
0 | 576 __ bind (L); |
577 } | |
578 // is minimum length 0? | |
579 Label noLoop, haveResult; | |
304 | 580 __ testptr (rax, rax); |
0 | 581 __ jcc (Assembler::zero, noLoop); |
582 | |
583 // compare first characters | |
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584 __ load_unsigned_short(rcx, Address(rdi, 0)); |
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585 __ load_unsigned_short(rbx, Address(rsi, 0)); |
0 | 586 __ subl(rcx, rbx); |
587 __ jcc(Assembler::notZero, haveResult); | |
588 // starting loop | |
589 __ decrement(rax); // we already tested index: skip one | |
590 __ jcc(Assembler::zero, noLoop); | |
591 | |
592 // set rsi.edi to the end of the arrays (arrays have same length) | |
593 // negate the index | |
594 | |
304 | 595 __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR))); |
596 __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR))); | |
597 __ negptr(rax); | |
0 | 598 |
599 // compare the strings in a loop | |
600 | |
601 Label loop; | |
602 __ align(wordSize); | |
603 __ bind(loop); | |
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604 __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0)); |
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605 __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0)); |
0 | 606 __ subl(rcx, rbx); |
607 __ jcc(Assembler::notZero, haveResult); | |
608 __ increment(rax); | |
609 __ jcc(Assembler::notZero, loop); | |
610 | |
611 // strings are equal up to min length | |
612 | |
613 __ bind(noLoop); | |
304 | 614 __ pop(rax); |
0 | 615 return_op(LIR_OprFact::illegalOpr); |
616 | |
617 __ bind(haveResult); | |
618 // leave instruction is going to discard the TOS value | |
304 | 619 __ mov (rax, rcx); // result of call is in rax, |
0 | 620 } |
621 | |
622 | |
623 void LIR_Assembler::return_op(LIR_Opr result) { | |
624 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,"); | |
625 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) { | |
626 assert(result->fpu() == 0, "result must already be on TOS"); | |
627 } | |
628 | |
629 // Pop the stack before the safepoint code | |
1295 | 630 __ remove_frame(initial_frame_size_in_bytes()); |
0 | 631 |
632 bool result_is_oop = result->is_valid() ? result->is_oop() : false; | |
633 | |
634 // Note: we do not need to round double result; float result has the right precision | |
635 // the poll sets the condition code, but no data registers | |
636 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
637 relocInfo::poll_return_type); | |
304 | 638 |
639 // NOTE: the requires that the polling page be reachable else the reloc | |
640 // goes to the movq that loads the address and not the faulting instruction | |
641 // which breaks the signal handler code | |
642 | |
0 | 643 __ test32(rax, polling_page); |
644 | |
645 __ ret(0); | |
646 } | |
647 | |
648 | |
649 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { | |
650 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), | |
651 relocInfo::poll_type); | |
652 | |
653 if (info != NULL) { | |
654 add_debug_info_for_branch(info); | |
655 } else { | |
656 ShouldNotReachHere(); | |
657 } | |
658 | |
659 int offset = __ offset(); | |
304 | 660 |
661 // NOTE: the requires that the polling page be reachable else the reloc | |
662 // goes to the movq that loads the address and not the faulting instruction | |
663 // which breaks the signal handler code | |
664 | |
0 | 665 __ test32(rax, polling_page); |
666 return offset; | |
667 } | |
668 | |
669 | |
670 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) { | |
304 | 671 if (from_reg != to_reg) __ mov(to_reg, from_reg); |
0 | 672 } |
673 | |
674 void LIR_Assembler::swap_reg(Register a, Register b) { | |
304 | 675 __ xchgptr(a, b); |
0 | 676 } |
677 | |
678 | |
679 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { | |
680 assert(src->is_constant(), "should not call otherwise"); | |
681 assert(dest->is_register(), "should not call otherwise"); | |
682 LIR_Const* c = src->as_constant_ptr(); | |
683 | |
684 switch (c->type()) { | |
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685 case T_INT: |
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686 case T_ADDRESS: { |
0 | 687 assert(patch_code == lir_patch_none, "no patching handled here"); |
688 __ movl(dest->as_register(), c->as_jint()); | |
689 break; | |
690 } | |
691 | |
692 case T_LONG: { | |
693 assert(patch_code == lir_patch_none, "no patching handled here"); | |
304 | 694 #ifdef _LP64 |
695 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong()); | |
696 #else | |
697 __ movptr(dest->as_register_lo(), c->as_jint_lo()); | |
698 __ movptr(dest->as_register_hi(), c->as_jint_hi()); | |
699 #endif // _LP64 | |
0 | 700 break; |
701 } | |
702 | |
703 case T_OBJECT: { | |
704 if (patch_code != lir_patch_none) { | |
705 jobject2reg_with_patching(dest->as_register(), info); | |
706 } else { | |
707 __ movoop(dest->as_register(), c->as_jobject()); | |
708 } | |
709 break; | |
710 } | |
711 | |
712 case T_FLOAT: { | |
713 if (dest->is_single_xmm()) { | |
714 if (c->is_zero_float()) { | |
715 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg()); | |
716 } else { | |
717 __ movflt(dest->as_xmm_float_reg(), | |
718 InternalAddress(float_constant(c->as_jfloat()))); | |
719 } | |
720 } else { | |
721 assert(dest->is_single_fpu(), "must be"); | |
722 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
723 if (c->is_zero_float()) { | |
724 __ fldz(); | |
725 } else if (c->is_one_float()) { | |
726 __ fld1(); | |
727 } else { | |
728 __ fld_s (InternalAddress(float_constant(c->as_jfloat()))); | |
729 } | |
730 } | |
731 break; | |
732 } | |
733 | |
734 case T_DOUBLE: { | |
735 if (dest->is_double_xmm()) { | |
736 if (c->is_zero_double()) { | |
737 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg()); | |
738 } else { | |
739 __ movdbl(dest->as_xmm_double_reg(), | |
740 InternalAddress(double_constant(c->as_jdouble()))); | |
741 } | |
742 } else { | |
743 assert(dest->is_double_fpu(), "must be"); | |
744 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
745 if (c->is_zero_double()) { | |
746 __ fldz(); | |
747 } else if (c->is_one_double()) { | |
748 __ fld1(); | |
749 } else { | |
750 __ fld_d (InternalAddress(double_constant(c->as_jdouble()))); | |
751 } | |
752 } | |
753 break; | |
754 } | |
755 | |
756 default: | |
757 ShouldNotReachHere(); | |
758 } | |
759 } | |
760 | |
761 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { | |
762 assert(src->is_constant(), "should not call otherwise"); | |
763 assert(dest->is_stack(), "should not call otherwise"); | |
764 LIR_Const* c = src->as_constant_ptr(); | |
765 | |
766 switch (c->type()) { | |
767 case T_INT: // fall through | |
768 case T_FLOAT: | |
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769 case T_ADDRESS: |
0 | 770 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); |
771 break; | |
772 | |
773 case T_OBJECT: | |
774 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject()); | |
775 break; | |
776 | |
777 case T_LONG: // fall through | |
778 case T_DOUBLE: | |
304 | 779 #ifdef _LP64 |
780 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
781 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits()); | |
782 #else | |
783 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
784 lo_word_offset_in_bytes), c->as_jint_lo_bits()); | |
785 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), | |
786 hi_word_offset_in_bytes), c->as_jint_hi_bits()); | |
787 #endif // _LP64 | |
0 | 788 break; |
789 | |
790 default: | |
791 ShouldNotReachHere(); | |
792 } | |
793 } | |
794 | |
795 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info ) { | |
796 assert(src->is_constant(), "should not call otherwise"); | |
797 assert(dest->is_address(), "should not call otherwise"); | |
798 LIR_Const* c = src->as_constant_ptr(); | |
799 LIR_Address* addr = dest->as_address_ptr(); | |
800 | |
304 | 801 int null_check_here = code_offset(); |
0 | 802 switch (type) { |
803 case T_INT: // fall through | |
804 case T_FLOAT: | |
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805 case T_ADDRESS: |
0 | 806 __ movl(as_Address(addr), c->as_jint_bits()); |
807 break; | |
808 | |
809 case T_OBJECT: // fall through | |
810 case T_ARRAY: | |
811 if (c->as_jobject() == NULL) { | |
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812 __ movptr(as_Address(addr), NULL_WORD); |
0 | 813 } else { |
304 | 814 if (is_literal_address(addr)) { |
815 ShouldNotReachHere(); | |
816 __ movoop(as_Address(addr, noreg), c->as_jobject()); | |
817 } else { | |
1060 | 818 #ifdef _LP64 |
819 __ movoop(rscratch1, c->as_jobject()); | |
820 null_check_here = code_offset(); | |
821 __ movptr(as_Address_lo(addr), rscratch1); | |
822 #else | |
304 | 823 __ movoop(as_Address(addr), c->as_jobject()); |
1060 | 824 #endif |
304 | 825 } |
0 | 826 } |
827 break; | |
828 | |
829 case T_LONG: // fall through | |
830 case T_DOUBLE: | |
304 | 831 #ifdef _LP64 |
832 if (is_literal_address(addr)) { | |
833 ShouldNotReachHere(); | |
834 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits()); | |
835 } else { | |
836 __ movptr(r10, (intptr_t)c->as_jlong_bits()); | |
837 null_check_here = code_offset(); | |
838 __ movptr(as_Address_lo(addr), r10); | |
839 } | |
840 #else | |
841 // Always reachable in 32bit so this doesn't produce useless move literal | |
842 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits()); | |
843 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits()); | |
844 #endif // _LP64 | |
0 | 845 break; |
846 | |
847 case T_BOOLEAN: // fall through | |
848 case T_BYTE: | |
849 __ movb(as_Address(addr), c->as_jint() & 0xFF); | |
850 break; | |
851 | |
852 case T_CHAR: // fall through | |
853 case T_SHORT: | |
854 __ movw(as_Address(addr), c->as_jint() & 0xFFFF); | |
855 break; | |
856 | |
857 default: | |
858 ShouldNotReachHere(); | |
859 }; | |
304 | 860 |
861 if (info != NULL) { | |
862 add_debug_info_for_null_check(null_check_here, info); | |
863 } | |
0 | 864 } |
865 | |
866 | |
867 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) { | |
868 assert(src->is_register(), "should not call otherwise"); | |
869 assert(dest->is_register(), "should not call otherwise"); | |
870 | |
871 // move between cpu-registers | |
872 if (dest->is_single_cpu()) { | |
304 | 873 #ifdef _LP64 |
874 if (src->type() == T_LONG) { | |
875 // Can do LONG -> OBJECT | |
876 move_regs(src->as_register_lo(), dest->as_register()); | |
877 return; | |
878 } | |
879 #endif | |
0 | 880 assert(src->is_single_cpu(), "must match"); |
881 if (src->type() == T_OBJECT) { | |
882 __ verify_oop(src->as_register()); | |
883 } | |
884 move_regs(src->as_register(), dest->as_register()); | |
885 | |
886 } else if (dest->is_double_cpu()) { | |
304 | 887 #ifdef _LP64 |
888 if (src->type() == T_OBJECT || src->type() == T_ARRAY) { | |
889 // Surprising to me but we can see move of a long to t_object | |
890 __ verify_oop(src->as_register()); | |
891 move_regs(src->as_register(), dest->as_register_lo()); | |
892 return; | |
893 } | |
894 #endif | |
0 | 895 assert(src->is_double_cpu(), "must match"); |
896 Register f_lo = src->as_register_lo(); | |
897 Register f_hi = src->as_register_hi(); | |
898 Register t_lo = dest->as_register_lo(); | |
899 Register t_hi = dest->as_register_hi(); | |
304 | 900 #ifdef _LP64 |
901 assert(f_hi == f_lo, "must be same"); | |
902 assert(t_hi == t_lo, "must be same"); | |
903 move_regs(f_lo, t_lo); | |
904 #else | |
0 | 905 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation"); |
906 | |
304 | 907 |
0 | 908 if (f_lo == t_hi && f_hi == t_lo) { |
909 swap_reg(f_lo, f_hi); | |
910 } else if (f_hi == t_lo) { | |
911 assert(f_lo != t_hi, "overwriting register"); | |
912 move_regs(f_hi, t_hi); | |
913 move_regs(f_lo, t_lo); | |
914 } else { | |
915 assert(f_hi != t_lo, "overwriting register"); | |
916 move_regs(f_lo, t_lo); | |
917 move_regs(f_hi, t_hi); | |
918 } | |
304 | 919 #endif // LP64 |
0 | 920 |
921 // special moves from fpu-register to xmm-register | |
922 // necessary for method results | |
923 } else if (src->is_single_xmm() && !dest->is_single_xmm()) { | |
924 __ movflt(Address(rsp, 0), src->as_xmm_float_reg()); | |
925 __ fld_s(Address(rsp, 0)); | |
926 } else if (src->is_double_xmm() && !dest->is_double_xmm()) { | |
927 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg()); | |
928 __ fld_d(Address(rsp, 0)); | |
929 } else if (dest->is_single_xmm() && !src->is_single_xmm()) { | |
930 __ fstp_s(Address(rsp, 0)); | |
931 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0)); | |
932 } else if (dest->is_double_xmm() && !src->is_double_xmm()) { | |
933 __ fstp_d(Address(rsp, 0)); | |
934 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0)); | |
935 | |
936 // move between xmm-registers | |
937 } else if (dest->is_single_xmm()) { | |
938 assert(src->is_single_xmm(), "must match"); | |
939 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg()); | |
940 } else if (dest->is_double_xmm()) { | |
941 assert(src->is_double_xmm(), "must match"); | |
942 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg()); | |
943 | |
944 // move between fpu-registers (no instruction necessary because of fpu-stack) | |
945 } else if (dest->is_single_fpu() || dest->is_double_fpu()) { | |
946 assert(src->is_single_fpu() || src->is_double_fpu(), "must match"); | |
947 assert(src->fpu() == dest->fpu(), "currently should be nothing to do"); | |
948 } else { | |
949 ShouldNotReachHere(); | |
950 } | |
951 } | |
952 | |
953 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { | |
954 assert(src->is_register(), "should not call otherwise"); | |
955 assert(dest->is_stack(), "should not call otherwise"); | |
956 | |
957 if (src->is_single_cpu()) { | |
958 Address dst = frame_map()->address_for_slot(dest->single_stack_ix()); | |
959 if (type == T_OBJECT || type == T_ARRAY) { | |
960 __ verify_oop(src->as_register()); | |
304 | 961 __ movptr (dst, src->as_register()); |
962 } else { | |
963 __ movl (dst, src->as_register()); | |
0 | 964 } |
965 | |
966 } else if (src->is_double_cpu()) { | |
967 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes); | |
968 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 969 __ movptr (dstLO, src->as_register_lo()); |
970 NOT_LP64(__ movptr (dstHI, src->as_register_hi())); | |
0 | 971 |
972 } else if (src->is_single_xmm()) { | |
973 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
974 __ movflt(dst_addr, src->as_xmm_float_reg()); | |
975 | |
976 } else if (src->is_double_xmm()) { | |
977 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
978 __ movdbl(dst_addr, src->as_xmm_double_reg()); | |
979 | |
980 } else if (src->is_single_fpu()) { | |
981 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
982 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); | |
983 if (pop_fpu_stack) __ fstp_s (dst_addr); | |
984 else __ fst_s (dst_addr); | |
985 | |
986 } else if (src->is_double_fpu()) { | |
987 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
988 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); | |
989 if (pop_fpu_stack) __ fstp_d (dst_addr); | |
990 else __ fst_d (dst_addr); | |
991 | |
992 } else { | |
993 ShouldNotReachHere(); | |
994 } | |
995 } | |
996 | |
997 | |
998 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool /* unaligned */) { | |
999 LIR_Address* to_addr = dest->as_address_ptr(); | |
1000 PatchingStub* patch = NULL; | |
1001 | |
1002 if (type == T_ARRAY || type == T_OBJECT) { | |
1003 __ verify_oop(src->as_register()); | |
1004 } | |
1005 if (patch_code != lir_patch_none) { | |
1006 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 1007 Address toa = as_Address(to_addr); |
1008 assert(toa.disp() != 0, "must have"); | |
0 | 1009 } |
1010 if (info != NULL) { | |
1011 add_debug_info_for_null_check_here(info); | |
1012 } | |
1013 | |
1014 switch (type) { | |
1015 case T_FLOAT: { | |
1016 if (src->is_single_xmm()) { | |
1017 __ movflt(as_Address(to_addr), src->as_xmm_float_reg()); | |
1018 } else { | |
1019 assert(src->is_single_fpu(), "must be"); | |
1020 assert(src->fpu_regnr() == 0, "argument must be on TOS"); | |
1021 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr)); | |
1022 else __ fst_s (as_Address(to_addr)); | |
1023 } | |
1024 break; | |
1025 } | |
1026 | |
1027 case T_DOUBLE: { | |
1028 if (src->is_double_xmm()) { | |
1029 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg()); | |
1030 } else { | |
1031 assert(src->is_double_fpu(), "must be"); | |
1032 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); | |
1033 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr)); | |
1034 else __ fst_d (as_Address(to_addr)); | |
1035 } | |
1036 break; | |
1037 } | |
1038 | |
1039 case T_ADDRESS: // fall through | |
1040 case T_ARRAY: // fall through | |
1041 case T_OBJECT: // fall through | |
304 | 1042 #ifdef _LP64 |
1043 __ movptr(as_Address(to_addr), src->as_register()); | |
1044 break; | |
1045 #endif // _LP64 | |
0 | 1046 case T_INT: |
1047 __ movl(as_Address(to_addr), src->as_register()); | |
1048 break; | |
1049 | |
1050 case T_LONG: { | |
1051 Register from_lo = src->as_register_lo(); | |
1052 Register from_hi = src->as_register_hi(); | |
304 | 1053 #ifdef _LP64 |
1054 __ movptr(as_Address_lo(to_addr), from_lo); | |
1055 #else | |
0 | 1056 Register base = to_addr->base()->as_register(); |
1057 Register index = noreg; | |
1058 if (to_addr->index()->is_register()) { | |
1059 index = to_addr->index()->as_register(); | |
1060 } | |
1061 if (base == from_lo || index == from_lo) { | |
1062 assert(base != from_hi, "can't be"); | |
1063 assert(index == noreg || (index != base && index != from_hi), "can't handle this"); | |
1064 __ movl(as_Address_hi(to_addr), from_hi); | |
1065 if (patch != NULL) { | |
1066 patching_epilog(patch, lir_patch_high, base, info); | |
1067 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1068 patch_code = lir_patch_low; | |
1069 } | |
1070 __ movl(as_Address_lo(to_addr), from_lo); | |
1071 } else { | |
1072 assert(index == noreg || (index != base && index != from_lo), "can't handle this"); | |
1073 __ movl(as_Address_lo(to_addr), from_lo); | |
1074 if (patch != NULL) { | |
1075 patching_epilog(patch, lir_patch_low, base, info); | |
1076 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1077 patch_code = lir_patch_high; | |
1078 } | |
1079 __ movl(as_Address_hi(to_addr), from_hi); | |
1080 } | |
304 | 1081 #endif // _LP64 |
0 | 1082 break; |
1083 } | |
1084 | |
1085 case T_BYTE: // fall through | |
1086 case T_BOOLEAN: { | |
1087 Register src_reg = src->as_register(); | |
1088 Address dst_addr = as_Address(to_addr); | |
1089 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6"); | |
1090 __ movb(dst_addr, src_reg); | |
1091 break; | |
1092 } | |
1093 | |
1094 case T_CHAR: // fall through | |
1095 case T_SHORT: | |
1096 __ movw(as_Address(to_addr), src->as_register()); | |
1097 break; | |
1098 | |
1099 default: | |
1100 ShouldNotReachHere(); | |
1101 } | |
1102 | |
1103 if (patch_code != lir_patch_none) { | |
1104 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info); | |
1105 } | |
1106 } | |
1107 | |
1108 | |
1109 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1110 assert(src->is_stack(), "should not call otherwise"); | |
1111 assert(dest->is_register(), "should not call otherwise"); | |
1112 | |
1113 if (dest->is_single_cpu()) { | |
1114 if (type == T_ARRAY || type == T_OBJECT) { | |
304 | 1115 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); |
0 | 1116 __ verify_oop(dest->as_register()); |
304 | 1117 } else { |
1118 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); | |
0 | 1119 } |
1120 | |
1121 } else if (dest->is_double_cpu()) { | |
1122 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes); | |
1123 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes); | |
304 | 1124 __ movptr(dest->as_register_lo(), src_addr_LO); |
1125 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI)); | |
0 | 1126 |
1127 } else if (dest->is_single_xmm()) { | |
1128 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1129 __ movflt(dest->as_xmm_float_reg(), src_addr); | |
1130 | |
1131 } else if (dest->is_double_xmm()) { | |
1132 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1133 __ movdbl(dest->as_xmm_double_reg(), src_addr); | |
1134 | |
1135 } else if (dest->is_single_fpu()) { | |
1136 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1137 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); | |
1138 __ fld_s(src_addr); | |
1139 | |
1140 } else if (dest->is_double_fpu()) { | |
1141 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1142 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); | |
1143 __ fld_d(src_addr); | |
1144 | |
1145 } else { | |
1146 ShouldNotReachHere(); | |
1147 } | |
1148 } | |
1149 | |
1150 | |
1151 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { | |
1152 if (src->is_single_stack()) { | |
304 | 1153 if (type == T_OBJECT || type == T_ARRAY) { |
1154 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix())); | |
1155 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1156 } else { | |
1060 | 1157 #ifndef _LP64 |
304 | 1158 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix())); |
1159 __ popl (frame_map()->address_for_slot(dest->single_stack_ix())); | |
1060 | 1160 #else |
1161 //no pushl on 64bits | |
1162 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix())); | |
1163 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1); | |
1164 #endif | |
304 | 1165 } |
0 | 1166 |
1167 } else if (src->is_double_stack()) { | |
304 | 1168 #ifdef _LP64 |
1169 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix())); | |
1170 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix())); | |
1171 #else | |
0 | 1172 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0)); |
304 | 1173 // push and pop the part at src + wordSize, adding wordSize for the previous push |
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1174 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize)); |
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1175 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize)); |
0 | 1176 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0)); |
304 | 1177 #endif // _LP64 |
0 | 1178 |
1179 } else { | |
1180 ShouldNotReachHere(); | |
1181 } | |
1182 } | |
1183 | |
1184 | |
1185 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool /* unaligned */) { | |
1186 assert(src->is_address(), "should not call otherwise"); | |
1187 assert(dest->is_register(), "should not call otherwise"); | |
1188 | |
1189 LIR_Address* addr = src->as_address_ptr(); | |
1190 Address from_addr = as_Address(addr); | |
1191 | |
1192 switch (type) { | |
1193 case T_BOOLEAN: // fall through | |
1194 case T_BYTE: // fall through | |
1195 case T_CHAR: // fall through | |
1196 case T_SHORT: | |
1197 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) { | |
1198 // on pre P6 processors we may get partial register stalls | |
1199 // so blow away the value of to_rinfo before loading a | |
1200 // partial word into it. Do it here so that it precedes | |
1201 // the potential patch point below. | |
304 | 1202 __ xorptr(dest->as_register(), dest->as_register()); |
0 | 1203 } |
1204 break; | |
1205 } | |
1206 | |
1207 PatchingStub* patch = NULL; | |
1208 if (patch_code != lir_patch_none) { | |
1209 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
304 | 1210 assert(from_addr.disp() != 0, "must have"); |
0 | 1211 } |
1212 if (info != NULL) { | |
1213 add_debug_info_for_null_check_here(info); | |
1214 } | |
1215 | |
1216 switch (type) { | |
1217 case T_FLOAT: { | |
1218 if (dest->is_single_xmm()) { | |
1219 __ movflt(dest->as_xmm_float_reg(), from_addr); | |
1220 } else { | |
1221 assert(dest->is_single_fpu(), "must be"); | |
1222 assert(dest->fpu_regnr() == 0, "dest must be TOS"); | |
1223 __ fld_s(from_addr); | |
1224 } | |
1225 break; | |
1226 } | |
1227 | |
1228 case T_DOUBLE: { | |
1229 if (dest->is_double_xmm()) { | |
1230 __ movdbl(dest->as_xmm_double_reg(), from_addr); | |
1231 } else { | |
1232 assert(dest->is_double_fpu(), "must be"); | |
1233 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); | |
1234 __ fld_d(from_addr); | |
1235 } | |
1236 break; | |
1237 } | |
1238 | |
1239 case T_ADDRESS: // fall through | |
1240 case T_OBJECT: // fall through | |
1241 case T_ARRAY: // fall through | |
304 | 1242 #ifdef _LP64 |
1243 __ movptr(dest->as_register(), from_addr); | |
1244 break; | |
1245 #endif // _L64 | |
0 | 1246 case T_INT: |
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1247 __ movl(dest->as_register(), from_addr); |
0 | 1248 break; |
1249 | |
1250 case T_LONG: { | |
1251 Register to_lo = dest->as_register_lo(); | |
1252 Register to_hi = dest->as_register_hi(); | |
304 | 1253 #ifdef _LP64 |
1254 __ movptr(to_lo, as_Address_lo(addr)); | |
1255 #else | |
0 | 1256 Register base = addr->base()->as_register(); |
1257 Register index = noreg; | |
1258 if (addr->index()->is_register()) { | |
1259 index = addr->index()->as_register(); | |
1260 } | |
1261 if ((base == to_lo && index == to_hi) || | |
1262 (base == to_hi && index == to_lo)) { | |
1263 // addresses with 2 registers are only formed as a result of | |
1264 // array access so this code will never have to deal with | |
1265 // patches or null checks. | |
1266 assert(info == NULL && patch == NULL, "must be"); | |
304 | 1267 __ lea(to_hi, as_Address(addr)); |
0 | 1268 __ movl(to_lo, Address(to_hi, 0)); |
1269 __ movl(to_hi, Address(to_hi, BytesPerWord)); | |
1270 } else if (base == to_lo || index == to_lo) { | |
1271 assert(base != to_hi, "can't be"); | |
1272 assert(index == noreg || (index != base && index != to_hi), "can't handle this"); | |
1273 __ movl(to_hi, as_Address_hi(addr)); | |
1274 if (patch != NULL) { | |
1275 patching_epilog(patch, lir_patch_high, base, info); | |
1276 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1277 patch_code = lir_patch_low; | |
1278 } | |
1279 __ movl(to_lo, as_Address_lo(addr)); | |
1280 } else { | |
1281 assert(index == noreg || (index != base && index != to_lo), "can't handle this"); | |
1282 __ movl(to_lo, as_Address_lo(addr)); | |
1283 if (patch != NULL) { | |
1284 patching_epilog(patch, lir_patch_low, base, info); | |
1285 patch = new PatchingStub(_masm, PatchingStub::access_field_id); | |
1286 patch_code = lir_patch_high; | |
1287 } | |
1288 __ movl(to_hi, as_Address_hi(addr)); | |
1289 } | |
304 | 1290 #endif // _LP64 |
0 | 1291 break; |
1292 } | |
1293 | |
1294 case T_BOOLEAN: // fall through | |
1295 case T_BYTE: { | |
1296 Register dest_reg = dest->as_register(); | |
1297 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1298 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1299 __ movsbl(dest_reg, from_addr); |
0 | 1300 } else { |
1301 __ movb(dest_reg, from_addr); | |
1302 __ shll(dest_reg, 24); | |
1303 __ sarl(dest_reg, 24); | |
1304 } | |
1305 break; | |
1306 } | |
1307 | |
1308 case T_CHAR: { | |
1309 Register dest_reg = dest->as_register(); | |
1310 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); | |
1311 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1312 __ movzwl(dest_reg, from_addr); |
0 | 1313 } else { |
1314 __ movw(dest_reg, from_addr); | |
1315 } | |
1316 break; | |
1317 } | |
1318 | |
1319 case T_SHORT: { | |
1320 Register dest_reg = dest->as_register(); | |
1321 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { | |
304 | 1322 __ movswl(dest_reg, from_addr); |
0 | 1323 } else { |
1324 __ movw(dest_reg, from_addr); | |
1325 __ shll(dest_reg, 16); | |
1326 __ sarl(dest_reg, 16); | |
1327 } | |
1328 break; | |
1329 } | |
1330 | |
1331 default: | |
1332 ShouldNotReachHere(); | |
1333 } | |
1334 | |
1335 if (patch != NULL) { | |
1336 patching_epilog(patch, patch_code, addr->base()->as_register(), info); | |
1337 } | |
1338 | |
1339 if (type == T_ARRAY || type == T_OBJECT) { | |
1340 __ verify_oop(dest->as_register()); | |
1341 } | |
1342 } | |
1343 | |
1344 | |
1345 void LIR_Assembler::prefetchr(LIR_Opr src) { | |
1346 LIR_Address* addr = src->as_address_ptr(); | |
1347 Address from_addr = as_Address(addr); | |
1348 | |
1349 if (VM_Version::supports_sse()) { | |
1350 switch (ReadPrefetchInstr) { | |
1351 case 0: | |
1352 __ prefetchnta(from_addr); break; | |
1353 case 1: | |
1354 __ prefetcht0(from_addr); break; | |
1355 case 2: | |
1356 __ prefetcht2(from_addr); break; | |
1357 default: | |
1358 ShouldNotReachHere(); break; | |
1359 } | |
1360 } else if (VM_Version::supports_3dnow()) { | |
1361 __ prefetchr(from_addr); | |
1362 } | |
1363 } | |
1364 | |
1365 | |
1366 void LIR_Assembler::prefetchw(LIR_Opr src) { | |
1367 LIR_Address* addr = src->as_address_ptr(); | |
1368 Address from_addr = as_Address(addr); | |
1369 | |
1370 if (VM_Version::supports_sse()) { | |
1371 switch (AllocatePrefetchInstr) { | |
1372 case 0: | |
1373 __ prefetchnta(from_addr); break; | |
1374 case 1: | |
1375 __ prefetcht0(from_addr); break; | |
1376 case 2: | |
1377 __ prefetcht2(from_addr); break; | |
1378 case 3: | |
1379 __ prefetchw(from_addr); break; | |
1380 default: | |
1381 ShouldNotReachHere(); break; | |
1382 } | |
1383 } else if (VM_Version::supports_3dnow()) { | |
1384 __ prefetchw(from_addr); | |
1385 } | |
1386 } | |
1387 | |
1388 | |
1389 NEEDS_CLEANUP; // This could be static? | |
1390 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const { | |
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1391 int elem_size = type2aelembytes(type); |
0 | 1392 switch (elem_size) { |
1393 case 1: return Address::times_1; | |
1394 case 2: return Address::times_2; | |
1395 case 4: return Address::times_4; | |
1396 case 8: return Address::times_8; | |
1397 } | |
1398 ShouldNotReachHere(); | |
1399 return Address::no_scale; | |
1400 } | |
1401 | |
1402 | |
1403 void LIR_Assembler::emit_op3(LIR_Op3* op) { | |
1404 switch (op->code()) { | |
1405 case lir_idiv: | |
1406 case lir_irem: | |
1407 arithmetic_idiv(op->code(), | |
1408 op->in_opr1(), | |
1409 op->in_opr2(), | |
1410 op->in_opr3(), | |
1411 op->result_opr(), | |
1412 op->info()); | |
1413 break; | |
1414 default: ShouldNotReachHere(); break; | |
1415 } | |
1416 } | |
1417 | |
1418 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { | |
1419 #ifdef ASSERT | |
1420 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); | |
1421 if (op->block() != NULL) _branch_target_blocks.append(op->block()); | |
1422 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); | |
1423 #endif | |
1424 | |
1425 if (op->cond() == lir_cond_always) { | |
1426 if (op->info() != NULL) add_debug_info_for_branch(op->info()); | |
1427 __ jmp (*(op->label())); | |
1428 } else { | |
1429 Assembler::Condition acond = Assembler::zero; | |
1430 if (op->code() == lir_cond_float_branch) { | |
1431 assert(op->ublock() != NULL, "must have unordered successor"); | |
1432 __ jcc(Assembler::parity, *(op->ublock()->label())); | |
1433 switch(op->cond()) { | |
1434 case lir_cond_equal: acond = Assembler::equal; break; | |
1435 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1436 case lir_cond_less: acond = Assembler::below; break; | |
1437 case lir_cond_lessEqual: acond = Assembler::belowEqual; break; | |
1438 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break; | |
1439 case lir_cond_greater: acond = Assembler::above; break; | |
1440 default: ShouldNotReachHere(); | |
1441 } | |
1442 } else { | |
1443 switch (op->cond()) { | |
1444 case lir_cond_equal: acond = Assembler::equal; break; | |
1445 case lir_cond_notEqual: acond = Assembler::notEqual; break; | |
1446 case lir_cond_less: acond = Assembler::less; break; | |
1447 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; | |
1448 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break; | |
1449 case lir_cond_greater: acond = Assembler::greater; break; | |
1450 case lir_cond_belowEqual: acond = Assembler::belowEqual; break; | |
1451 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break; | |
1452 default: ShouldNotReachHere(); | |
1453 } | |
1454 } | |
1455 __ jcc(acond,*(op->label())); | |
1456 } | |
1457 } | |
1458 | |
1459 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { | |
1460 LIR_Opr src = op->in_opr(); | |
1461 LIR_Opr dest = op->result_opr(); | |
1462 | |
1463 switch (op->bytecode()) { | |
1464 case Bytecodes::_i2l: | |
304 | 1465 #ifdef _LP64 |
1466 __ movl2ptr(dest->as_register_lo(), src->as_register()); | |
1467 #else | |
0 | 1468 move_regs(src->as_register(), dest->as_register_lo()); |
1469 move_regs(src->as_register(), dest->as_register_hi()); | |
1470 __ sarl(dest->as_register_hi(), 31); | |
304 | 1471 #endif // LP64 |
0 | 1472 break; |
1473 | |
1474 case Bytecodes::_l2i: | |
1475 move_regs(src->as_register_lo(), dest->as_register()); | |
1476 break; | |
1477 | |
1478 case Bytecodes::_i2b: | |
1479 move_regs(src->as_register(), dest->as_register()); | |
1480 __ sign_extend_byte(dest->as_register()); | |
1481 break; | |
1482 | |
1483 case Bytecodes::_i2c: | |
1484 move_regs(src->as_register(), dest->as_register()); | |
1485 __ andl(dest->as_register(), 0xFFFF); | |
1486 break; | |
1487 | |
1488 case Bytecodes::_i2s: | |
1489 move_regs(src->as_register(), dest->as_register()); | |
1490 __ sign_extend_short(dest->as_register()); | |
1491 break; | |
1492 | |
1493 | |
1494 case Bytecodes::_f2d: | |
1495 case Bytecodes::_d2f: | |
1496 if (dest->is_single_xmm()) { | |
1497 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg()); | |
1498 } else if (dest->is_double_xmm()) { | |
1499 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg()); | |
1500 } else { | |
1501 assert(src->fpu() == dest->fpu(), "register must be equal"); | |
1502 // do nothing (float result is rounded later through spilling) | |
1503 } | |
1504 break; | |
1505 | |
1506 case Bytecodes::_i2f: | |
1507 case Bytecodes::_i2d: | |
1508 if (dest->is_single_xmm()) { | |
304 | 1509 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register()); |
0 | 1510 } else if (dest->is_double_xmm()) { |
304 | 1511 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register()); |
0 | 1512 } else { |
1513 assert(dest->fpu() == 0, "result must be on TOS"); | |
1514 __ movl(Address(rsp, 0), src->as_register()); | |
1515 __ fild_s(Address(rsp, 0)); | |
1516 } | |
1517 break; | |
1518 | |
1519 case Bytecodes::_f2i: | |
1520 case Bytecodes::_d2i: | |
1521 if (src->is_single_xmm()) { | |
304 | 1522 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg()); |
0 | 1523 } else if (src->is_double_xmm()) { |
304 | 1524 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg()); |
0 | 1525 } else { |
1526 assert(src->fpu() == 0, "input must be on TOS"); | |
1527 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc())); | |
1528 __ fist_s(Address(rsp, 0)); | |
1529 __ movl(dest->as_register(), Address(rsp, 0)); | |
1530 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1531 } | |
1532 | |
1533 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub | |
1534 assert(op->stub() != NULL, "stub required"); | |
1535 __ cmpl(dest->as_register(), 0x80000000); | |
1536 __ jcc(Assembler::equal, *op->stub()->entry()); | |
1537 __ bind(*op->stub()->continuation()); | |
1538 break; | |
1539 | |
1540 case Bytecodes::_l2f: | |
1541 case Bytecodes::_l2d: | |
1542 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)"); | |
1543 assert(dest->fpu() == 0, "result must be on TOS"); | |
1544 | |
304 | 1545 __ movptr(Address(rsp, 0), src->as_register_lo()); |
1546 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi())); | |
0 | 1547 __ fild_d(Address(rsp, 0)); |
1548 // float result is rounded later through spilling | |
1549 break; | |
1550 | |
1551 case Bytecodes::_f2l: | |
1552 case Bytecodes::_d2l: | |
1553 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)"); | |
1554 assert(src->fpu() == 0, "input must be on TOS"); | |
304 | 1555 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers"); |
0 | 1556 |
1557 // instruction sequence too long to inline it here | |
1558 { | |
1559 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id))); | |
1560 } | |
1561 break; | |
1562 | |
1563 default: ShouldNotReachHere(); | |
1564 } | |
1565 } | |
1566 | |
1567 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { | |
1568 if (op->init_check()) { | |
1569 __ cmpl(Address(op->klass()->as_register(), | |
1570 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), | |
1571 instanceKlass::fully_initialized); | |
1572 add_debug_info_for_null_check_here(op->stub()->info()); | |
1573 __ jcc(Assembler::notEqual, *op->stub()->entry()); | |
1574 } | |
1575 __ allocate_object(op->obj()->as_register(), | |
1576 op->tmp1()->as_register(), | |
1577 op->tmp2()->as_register(), | |
1578 op->header_size(), | |
1579 op->object_size(), | |
1580 op->klass()->as_register(), | |
1581 *op->stub()->entry()); | |
1582 __ bind(*op->stub()->continuation()); | |
1583 } | |
1584 | |
1585 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { | |
1586 if (UseSlowPath || | |
1587 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || | |
1588 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { | |
1589 __ jmp(*op->stub()->entry()); | |
1590 } else { | |
1591 Register len = op->len()->as_register(); | |
1592 Register tmp1 = op->tmp1()->as_register(); | |
1593 Register tmp2 = op->tmp2()->as_register(); | |
1594 Register tmp3 = op->tmp3()->as_register(); | |
1595 if (len == tmp1) { | |
1596 tmp1 = tmp3; | |
1597 } else if (len == tmp2) { | |
1598 tmp2 = tmp3; | |
1599 } else if (len == tmp3) { | |
1600 // everything is ok | |
1601 } else { | |
304 | 1602 __ mov(tmp3, len); |
0 | 1603 } |
1604 __ allocate_array(op->obj()->as_register(), | |
1605 len, | |
1606 tmp1, | |
1607 tmp2, | |
1608 arrayOopDesc::header_size(op->type()), | |
1609 array_element_size(op->type()), | |
1610 op->klass()->as_register(), | |
1611 *op->stub()->entry()); | |
1612 } | |
1613 __ bind(*op->stub()->continuation()); | |
1614 } | |
1615 | |
1616 | |
1617 | |
1618 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { | |
1619 LIR_Code code = op->code(); | |
1620 if (code == lir_store_check) { | |
1621 Register value = op->object()->as_register(); | |
1622 Register array = op->array()->as_register(); | |
1623 Register k_RInfo = op->tmp1()->as_register(); | |
1624 Register klass_RInfo = op->tmp2()->as_register(); | |
1625 Register Rtmp1 = op->tmp3()->as_register(); | |
1626 | |
1627 CodeStub* stub = op->stub(); | |
1628 Label done; | |
304 | 1629 __ cmpptr(value, (int32_t)NULL_WORD); |
0 | 1630 __ jcc(Assembler::equal, done); |
1631 add_debug_info_for_null_check_here(op->info_for_exception()); | |
304 | 1632 __ movptr(k_RInfo, Address(array, oopDesc::klass_offset_in_bytes())); |
1633 __ movptr(klass_RInfo, Address(value, oopDesc::klass_offset_in_bytes())); | |
0 | 1634 |
1635 // get instance klass | |
304 | 1636 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); |
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1637 // perform the fast part of the checking logic |
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1638 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, stub->entry(), NULL); |
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1639 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1640 __ push(klass_RInfo); |
1641 __ push(k_RInfo); | |
0 | 1642 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1643 __ pop(klass_RInfo); |
1644 __ pop(k_RInfo); | |
1645 // result is a boolean | |
0 | 1646 __ cmpl(k_RInfo, 0); |
1647 __ jcc(Assembler::equal, *stub->entry()); | |
1648 __ bind(done); | |
1649 } else if (op->code() == lir_checkcast) { | |
1650 // we always need a stub for the failure case. | |
1651 CodeStub* stub = op->stub(); | |
1652 Register obj = op->object()->as_register(); | |
1653 Register k_RInfo = op->tmp1()->as_register(); | |
1654 Register klass_RInfo = op->tmp2()->as_register(); | |
1655 Register dst = op->result_opr()->as_register(); | |
1656 ciKlass* k = op->klass(); | |
1657 Register Rtmp1 = noreg; | |
1658 | |
1659 Label done; | |
1660 if (obj == k_RInfo) { | |
1661 k_RInfo = dst; | |
1662 } else if (obj == klass_RInfo) { | |
1663 klass_RInfo = dst; | |
1664 } | |
1665 if (k->is_loaded()) { | |
1666 select_different_registers(obj, dst, k_RInfo, klass_RInfo); | |
1667 } else { | |
1668 Rtmp1 = op->tmp3()->as_register(); | |
1669 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); | |
1670 } | |
1671 | |
1672 assert_different_registers(obj, k_RInfo, klass_RInfo); | |
1673 if (!k->is_loaded()) { | |
1674 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
1675 } else { | |
304 | 1676 #ifdef _LP64 |
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1677 __ movoop(k_RInfo, k->constant_encoding()); |
304 | 1678 #else |
0 | 1679 k_RInfo = noreg; |
304 | 1680 #endif // _LP64 |
0 | 1681 } |
1682 assert(obj != k_RInfo, "must be different"); | |
304 | 1683 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1684 if (op->profiled_method() != NULL) { |
1685 ciMethod* method = op->profiled_method(); | |
1686 int bci = op->profiled_bci(); | |
1687 | |
1688 Label profile_done; | |
1689 __ jcc(Assembler::notEqual, profile_done); | |
1690 // Object is null; update methodDataOop | |
1691 ciMethodData* md = method->method_data(); | |
1692 if (md == NULL) { | |
1693 bailout("out of memory building methodDataOop"); | |
1694 return; | |
1695 } | |
1696 ciProfileData* data = md->bci_to_data(bci); | |
1697 assert(data != NULL, "need data for checkcast"); | |
1698 assert(data->is_BitData(), "need BitData for checkcast"); | |
1699 Register mdo = klass_RInfo; | |
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1700 __ movoop(mdo, md->constant_encoding()); |
0 | 1701 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); |
1702 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); | |
1703 __ orl(data_addr, header_bits); | |
1704 __ jmp(done); | |
1705 __ bind(profile_done); | |
1706 } else { | |
1707 __ jcc(Assembler::equal, done); | |
1708 } | |
1709 __ verify_oop(obj); | |
1710 | |
1711 if (op->fast_check()) { | |
1712 // get object classo | |
1713 // not a safepoint as obj null check happens earlier | |
1714 if (k->is_loaded()) { | |
304 | 1715 #ifdef _LP64 |
1716 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1717 #else | |
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1718 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); |
304 | 1719 #endif // _LP64 |
0 | 1720 } else { |
304 | 1721 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1722 |
1723 } | |
1724 __ jcc(Assembler::notEqual, *stub->entry()); | |
1725 __ bind(done); | |
1726 } else { | |
1727 // get object class | |
1728 // not a safepoint as obj null check happens earlier | |
304 | 1729 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1730 if (k->is_loaded()) { |
1731 // See if we get an immediate positive hit | |
304 | 1732 #ifdef _LP64 |
1733 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); | |
1734 #else | |
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1735 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
304 | 1736 #endif // _LP64 |
0 | 1737 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { |
1738 __ jcc(Assembler::notEqual, *stub->entry()); | |
1739 } else { | |
1740 // See if we get an immediate positive hit | |
1741 __ jcc(Assembler::equal, done); | |
1742 // check for self | |
304 | 1743 #ifdef _LP64 |
1744 __ cmpptr(klass_RInfo, k_RInfo); | |
1745 #else | |
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1746 __ cmpoop(klass_RInfo, k->constant_encoding()); |
304 | 1747 #endif // _LP64 |
0 | 1748 __ jcc(Assembler::equal, done); |
1749 | |
304 | 1750 __ push(klass_RInfo); |
1751 #ifdef _LP64 | |
1752 __ push(k_RInfo); | |
1753 #else | |
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1754 __ pushoop(k->constant_encoding()); |
304 | 1755 #endif // _LP64 |
0 | 1756 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1757 __ pop(klass_RInfo); |
1758 __ pop(klass_RInfo); | |
1759 // result is a boolean | |
0 | 1760 __ cmpl(klass_RInfo, 0); |
1761 __ jcc(Assembler::equal, *stub->entry()); | |
1762 } | |
1763 __ bind(done); | |
1764 } else { | |
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1765 // perform the fast part of the checking logic |
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1766 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, stub->entry(), NULL); |
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1767 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1768 __ push(klass_RInfo); |
1769 __ push(k_RInfo); | |
0 | 1770 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1771 __ pop(klass_RInfo); |
1772 __ pop(k_RInfo); | |
1773 // result is a boolean | |
0 | 1774 __ cmpl(k_RInfo, 0); |
1775 __ jcc(Assembler::equal, *stub->entry()); | |
1776 __ bind(done); | |
1777 } | |
1778 | |
1779 } | |
1780 if (dst != obj) { | |
304 | 1781 __ mov(dst, obj); |
0 | 1782 } |
1783 } else if (code == lir_instanceof) { | |
1784 Register obj = op->object()->as_register(); | |
1785 Register k_RInfo = op->tmp1()->as_register(); | |
1786 Register klass_RInfo = op->tmp2()->as_register(); | |
1787 Register dst = op->result_opr()->as_register(); | |
1788 ciKlass* k = op->klass(); | |
1789 | |
1790 Label done; | |
1791 Label zero; | |
1792 Label one; | |
1793 if (obj == k_RInfo) { | |
1794 k_RInfo = klass_RInfo; | |
1795 klass_RInfo = obj; | |
1796 } | |
1797 // patching may screw with our temporaries on sparc, | |
1798 // so let's do it before loading the class | |
1799 if (!k->is_loaded()) { | |
1800 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
304 | 1801 } else { |
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1802 LP64_ONLY(__ movoop(k_RInfo, k->constant_encoding())); |
0 | 1803 } |
1804 assert(obj != k_RInfo, "must be different"); | |
1805 | |
1806 __ verify_oop(obj); | |
1807 if (op->fast_check()) { | |
304 | 1808 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1809 __ jcc(Assembler::equal, zero); |
1810 // get object class | |
1811 // not a safepoint as obj null check happens earlier | |
304 | 1812 if (LP64_ONLY(false &&) k->is_loaded()) { |
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1813 NOT_LP64(__ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding())); |
0 | 1814 k_RInfo = noreg; |
1815 } else { | |
304 | 1816 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1817 |
1818 } | |
1819 __ jcc(Assembler::equal, one); | |
1820 } else { | |
1821 // get object class | |
1822 // not a safepoint as obj null check happens earlier | |
304 | 1823 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1824 __ jcc(Assembler::equal, zero); |
304 | 1825 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
1826 | |
1827 #ifndef _LP64 | |
0 | 1828 if (k->is_loaded()) { |
1829 // See if we get an immediate positive hit | |
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1830 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
0 | 1831 __ jcc(Assembler::equal, one); |
1832 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() == k->super_check_offset()) { | |
1833 // check for self | |
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1834 __ cmpoop(klass_RInfo, k->constant_encoding()); |
0 | 1835 __ jcc(Assembler::equal, one); |
304 | 1836 __ push(klass_RInfo); |
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1837 __ pushoop(k->constant_encoding()); |
0 | 1838 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1839 __ pop(klass_RInfo); |
1840 __ pop(dst); | |
0 | 1841 __ jmp(done); |
1842 } | |
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1843 } |
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1844 else // next block is unconditional if LP64: |
304 | 1845 #endif // LP64 |
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1846 { |
0 | 1847 assert(dst != klass_RInfo && dst != k_RInfo, "need 3 registers"); |
1848 | |
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1849 // perform the fast part of the checking logic |
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1850 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, dst, &one, &zero, NULL); |
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1851 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1852 __ push(klass_RInfo); |
1853 __ push(k_RInfo); | |
0 | 1854 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1855 __ pop(klass_RInfo); |
1856 __ pop(dst); | |
0 | 1857 __ jmp(done); |
1858 } | |
1859 } | |
1860 __ bind(zero); | |
304 | 1861 __ xorptr(dst, dst); |
0 | 1862 __ jmp(done); |
1863 __ bind(one); | |
304 | 1864 __ movptr(dst, 1); |
0 | 1865 __ bind(done); |
1866 } else { | |
1867 ShouldNotReachHere(); | |
1868 } | |
1869 | |
1870 } | |
1871 | |
1872 | |
1873 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { | |
304 | 1874 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { |
0 | 1875 assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); |
1876 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); | |
1877 assert(op->new_value()->as_register_lo() == rbx, "wrong register"); | |
1878 assert(op->new_value()->as_register_hi() == rcx, "wrong register"); | |
1879 Register addr = op->addr()->as_register(); | |
1880 if (os::is_MP()) { | |
1881 __ lock(); | |
1882 } | |
304 | 1883 NOT_LP64(__ cmpxchg8(Address(addr, 0))); |
1884 | |
1885 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { | |
1886 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) | |
1887 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
0 | 1888 Register newval = op->new_value()->as_register(); |
1889 Register cmpval = op->cmp_value()->as_register(); | |
1890 assert(cmpval == rax, "wrong register"); | |
1891 assert(newval != NULL, "new val must be register"); | |
1892 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1893 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1894 assert(newval != addr, "new value and addr must be in different registers"); | |
1895 if (os::is_MP()) { | |
1896 __ lock(); | |
1897 } | |
304 | 1898 if ( op->code() == lir_cas_obj) { |
1899 __ cmpxchgptr(newval, Address(addr, 0)); | |
1900 } else if (op->code() == lir_cas_int) { | |
1901 __ cmpxchgl(newval, Address(addr, 0)); | |
1902 } else { | |
1903 LP64_ONLY(__ cmpxchgq(newval, Address(addr, 0))); | |
1904 } | |
1905 #ifdef _LP64 | |
1906 } else if (op->code() == lir_cas_long) { | |
1907 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
1908 Register newval = op->new_value()->as_register_lo(); | |
1909 Register cmpval = op->cmp_value()->as_register_lo(); | |
1910 assert(cmpval == rax, "wrong register"); | |
1911 assert(newval != NULL, "new val must be register"); | |
1912 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1913 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1914 assert(newval != addr, "new value and addr must be in different registers"); | |
1915 if (os::is_MP()) { | |
1916 __ lock(); | |
1917 } | |
1918 __ cmpxchgq(newval, Address(addr, 0)); | |
1919 #endif // _LP64 | |
0 | 1920 } else { |
1921 Unimplemented(); | |
1922 } | |
1923 } | |
1924 | |
1925 | |
1926 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { | |
1927 Assembler::Condition acond, ncond; | |
1928 switch (condition) { | |
1929 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; | |
1930 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; | |
1931 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; | |
1932 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; | |
1933 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; | |
1934 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; | |
1935 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; | |
1936 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; | |
1937 default: ShouldNotReachHere(); | |
1938 } | |
1939 | |
1940 if (opr1->is_cpu_register()) { | |
1941 reg2reg(opr1, result); | |
1942 } else if (opr1->is_stack()) { | |
1943 stack2reg(opr1, result, result->type()); | |
1944 } else if (opr1->is_constant()) { | |
1945 const2reg(opr1, result, lir_patch_none, NULL); | |
1946 } else { | |
1947 ShouldNotReachHere(); | |
1948 } | |
1949 | |
1950 if (VM_Version::supports_cmov() && !opr2->is_constant()) { | |
1951 // optimized version that does not require a branch | |
1952 if (opr2->is_single_cpu()) { | |
1953 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); | |
304 | 1954 __ cmov(ncond, result->as_register(), opr2->as_register()); |
0 | 1955 } else if (opr2->is_double_cpu()) { |
1956 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
1957 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
304 | 1958 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); |
1959 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) | |
0 | 1960 } else if (opr2->is_single_stack()) { |
1961 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); | |
1962 } else if (opr2->is_double_stack()) { | |
304 | 1963 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); |
1964 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) | |
0 | 1965 } else { |
1966 ShouldNotReachHere(); | |
1967 } | |
1968 | |
1969 } else { | |
1970 Label skip; | |
1971 __ jcc (acond, skip); | |
1972 if (opr2->is_cpu_register()) { | |
1973 reg2reg(opr2, result); | |
1974 } else if (opr2->is_stack()) { | |
1975 stack2reg(opr2, result, result->type()); | |
1976 } else if (opr2->is_constant()) { | |
1977 const2reg(opr2, result, lir_patch_none, NULL); | |
1978 } else { | |
1979 ShouldNotReachHere(); | |
1980 } | |
1981 __ bind(skip); | |
1982 } | |
1983 } | |
1984 | |
1985 | |
1986 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { | |
1987 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); | |
1988 | |
1989 if (left->is_single_cpu()) { | |
1990 assert(left == dest, "left and dest must be equal"); | |
1991 Register lreg = left->as_register(); | |
1992 | |
1993 if (right->is_single_cpu()) { | |
1994 // cpu register - cpu register | |
1995 Register rreg = right->as_register(); | |
1996 switch (code) { | |
1997 case lir_add: __ addl (lreg, rreg); break; | |
1998 case lir_sub: __ subl (lreg, rreg); break; | |
1999 case lir_mul: __ imull(lreg, rreg); break; | |
2000 default: ShouldNotReachHere(); | |
2001 } | |
2002 | |
2003 } else if (right->is_stack()) { | |
2004 // cpu register - stack | |
2005 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2006 switch (code) { | |
2007 case lir_add: __ addl(lreg, raddr); break; | |
2008 case lir_sub: __ subl(lreg, raddr); break; | |
2009 default: ShouldNotReachHere(); | |
2010 } | |
2011 | |
2012 } else if (right->is_constant()) { | |
2013 // cpu register - constant | |
2014 jint c = right->as_constant_ptr()->as_jint(); | |
2015 switch (code) { | |
2016 case lir_add: { | |
2017 __ increment(lreg, c); | |
2018 break; | |
2019 } | |
2020 case lir_sub: { | |
2021 __ decrement(lreg, c); | |
2022 break; | |
2023 } | |
2024 default: ShouldNotReachHere(); | |
2025 } | |
2026 | |
2027 } else { | |
2028 ShouldNotReachHere(); | |
2029 } | |
2030 | |
2031 } else if (left->is_double_cpu()) { | |
2032 assert(left == dest, "left and dest must be equal"); | |
2033 Register lreg_lo = left->as_register_lo(); | |
2034 Register lreg_hi = left->as_register_hi(); | |
2035 | |
2036 if (right->is_double_cpu()) { | |
2037 // cpu register - cpu register | |
2038 Register rreg_lo = right->as_register_lo(); | |
2039 Register rreg_hi = right->as_register_hi(); | |
304 | 2040 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); |
2041 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); | |
0 | 2042 switch (code) { |
2043 case lir_add: | |
304 | 2044 __ addptr(lreg_lo, rreg_lo); |
2045 NOT_LP64(__ adcl(lreg_hi, rreg_hi)); | |
0 | 2046 break; |
2047 case lir_sub: | |
304 | 2048 __ subptr(lreg_lo, rreg_lo); |
2049 NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); | |
0 | 2050 break; |
2051 case lir_mul: | |
304 | 2052 #ifdef _LP64 |
2053 __ imulq(lreg_lo, rreg_lo); | |
2054 #else | |
0 | 2055 assert(lreg_lo == rax && lreg_hi == rdx, "must be"); |
2056 __ imull(lreg_hi, rreg_lo); | |
2057 __ imull(rreg_hi, lreg_lo); | |
2058 __ addl (rreg_hi, lreg_hi); | |
2059 __ mull (rreg_lo); | |
2060 __ addl (lreg_hi, rreg_hi); | |
304 | 2061 #endif // _LP64 |
0 | 2062 break; |
2063 default: | |
2064 ShouldNotReachHere(); | |
2065 } | |
2066 | |
2067 } else if (right->is_constant()) { | |
2068 // cpu register - constant | |
304 | 2069 #ifdef _LP64 |
2070 jlong c = right->as_constant_ptr()->as_jlong_bits(); | |
2071 __ movptr(r10, (intptr_t) c); | |
2072 switch (code) { | |
2073 case lir_add: | |
2074 __ addptr(lreg_lo, r10); | |
2075 break; | |
2076 case lir_sub: | |
2077 __ subptr(lreg_lo, r10); | |
2078 break; | |
2079 default: | |
2080 ShouldNotReachHere(); | |
2081 } | |
2082 #else | |
0 | 2083 jint c_lo = right->as_constant_ptr()->as_jint_lo(); |
2084 jint c_hi = right->as_constant_ptr()->as_jint_hi(); | |
2085 switch (code) { | |
2086 case lir_add: | |
304 | 2087 __ addptr(lreg_lo, c_lo); |
0 | 2088 __ adcl(lreg_hi, c_hi); |
2089 break; | |
2090 case lir_sub: | |
304 | 2091 __ subptr(lreg_lo, c_lo); |
0 | 2092 __ sbbl(lreg_hi, c_hi); |
2093 break; | |
2094 default: | |
2095 ShouldNotReachHere(); | |
2096 } | |
304 | 2097 #endif // _LP64 |
0 | 2098 |
2099 } else { | |
2100 ShouldNotReachHere(); | |
2101 } | |
2102 | |
2103 } else if (left->is_single_xmm()) { | |
2104 assert(left == dest, "left and dest must be equal"); | |
2105 XMMRegister lreg = left->as_xmm_float_reg(); | |
2106 | |
2107 if (right->is_single_xmm()) { | |
2108 XMMRegister rreg = right->as_xmm_float_reg(); | |
2109 switch (code) { | |
2110 case lir_add: __ addss(lreg, rreg); break; | |
2111 case lir_sub: __ subss(lreg, rreg); break; | |
2112 case lir_mul_strictfp: // fall through | |
2113 case lir_mul: __ mulss(lreg, rreg); break; | |
2114 case lir_div_strictfp: // fall through | |
2115 case lir_div: __ divss(lreg, rreg); break; | |
2116 default: ShouldNotReachHere(); | |
2117 } | |
2118 } else { | |
2119 Address raddr; | |
2120 if (right->is_single_stack()) { | |
2121 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2122 } else if (right->is_constant()) { | |
2123 // hack for now | |
2124 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); | |
2125 } else { | |
2126 ShouldNotReachHere(); | |
2127 } | |
2128 switch (code) { | |
2129 case lir_add: __ addss(lreg, raddr); break; | |
2130 case lir_sub: __ subss(lreg, raddr); break; | |
2131 case lir_mul_strictfp: // fall through | |
2132 case lir_mul: __ mulss(lreg, raddr); break; | |
2133 case lir_div_strictfp: // fall through | |
2134 case lir_div: __ divss(lreg, raddr); break; | |
2135 default: ShouldNotReachHere(); | |
2136 } | |
2137 } | |
2138 | |
2139 } else if (left->is_double_xmm()) { | |
2140 assert(left == dest, "left and dest must be equal"); | |
2141 | |
2142 XMMRegister lreg = left->as_xmm_double_reg(); | |
2143 if (right->is_double_xmm()) { | |
2144 XMMRegister rreg = right->as_xmm_double_reg(); | |
2145 switch (code) { | |
2146 case lir_add: __ addsd(lreg, rreg); break; | |
2147 case lir_sub: __ subsd(lreg, rreg); break; | |
2148 case lir_mul_strictfp: // fall through | |
2149 case lir_mul: __ mulsd(lreg, rreg); break; | |
2150 case lir_div_strictfp: // fall through | |
2151 case lir_div: __ divsd(lreg, rreg); break; | |
2152 default: ShouldNotReachHere(); | |
2153 } | |
2154 } else { | |
2155 Address raddr; | |
2156 if (right->is_double_stack()) { | |
2157 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2158 } else if (right->is_constant()) { | |
2159 // hack for now | |
2160 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2161 } else { | |
2162 ShouldNotReachHere(); | |
2163 } | |
2164 switch (code) { | |
2165 case lir_add: __ addsd(lreg, raddr); break; | |
2166 case lir_sub: __ subsd(lreg, raddr); break; | |
2167 case lir_mul_strictfp: // fall through | |
2168 case lir_mul: __ mulsd(lreg, raddr); break; | |
2169 case lir_div_strictfp: // fall through | |
2170 case lir_div: __ divsd(lreg, raddr); break; | |
2171 default: ShouldNotReachHere(); | |
2172 } | |
2173 } | |
2174 | |
2175 } else if (left->is_single_fpu()) { | |
2176 assert(dest->is_single_fpu(), "fpu stack allocation required"); | |
2177 | |
2178 if (right->is_single_fpu()) { | |
2179 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); | |
2180 | |
2181 } else { | |
2182 assert(left->fpu_regnr() == 0, "left must be on TOS"); | |
2183 assert(dest->fpu_regnr() == 0, "dest must be on TOS"); | |
2184 | |
2185 Address raddr; | |
2186 if (right->is_single_stack()) { | |
2187 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2188 } else if (right->is_constant()) { | |
2189 address const_addr = float_constant(right->as_jfloat()); | |
2190 assert(const_addr != NULL, "incorrect float/double constant maintainance"); | |
2191 // hack for now | |
2192 raddr = __ as_Address(InternalAddress(const_addr)); | |
2193 } else { | |
2194 ShouldNotReachHere(); | |
2195 } | |
2196 | |
2197 switch (code) { | |
2198 case lir_add: __ fadd_s(raddr); break; | |
2199 case lir_sub: __ fsub_s(raddr); break; | |
2200 case lir_mul_strictfp: // fall through | |
2201 case lir_mul: __ fmul_s(raddr); break; | |
2202 case lir_div_strictfp: // fall through | |
2203 case lir_div: __ fdiv_s(raddr); break; | |
2204 default: ShouldNotReachHere(); | |
2205 } | |
2206 } | |
2207 | |
2208 } else if (left->is_double_fpu()) { | |
2209 assert(dest->is_double_fpu(), "fpu stack allocation required"); | |
2210 | |
2211 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2212 // Double values require special handling for strictfp mul/div on x86 | |
2213 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
2214 __ fmulp(left->fpu_regnrLo() + 1); | |
2215 } | |
2216 | |
2217 if (right->is_double_fpu()) { | |
2218 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); | |
2219 | |
2220 } else { | |
2221 assert(left->fpu_regnrLo() == 0, "left must be on TOS"); | |
2222 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); | |
2223 | |
2224 Address raddr; | |
2225 if (right->is_double_stack()) { | |
2226 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2227 } else if (right->is_constant()) { | |
2228 // hack for now | |
2229 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2230 } else { | |
2231 ShouldNotReachHere(); | |
2232 } | |
2233 | |
2234 switch (code) { | |
2235 case lir_add: __ fadd_d(raddr); break; | |
2236 case lir_sub: __ fsub_d(raddr); break; | |
2237 case lir_mul_strictfp: // fall through | |
2238 case lir_mul: __ fmul_d(raddr); break; | |
2239 case lir_div_strictfp: // fall through | |
2240 case lir_div: __ fdiv_d(raddr); break; | |
2241 default: ShouldNotReachHere(); | |
2242 } | |
2243 } | |
2244 | |
2245 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2246 // Double values require special handling for strictfp mul/div on x86 | |
2247 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
2248 __ fmulp(dest->fpu_regnrLo() + 1); | |
2249 } | |
2250 | |
2251 } else if (left->is_single_stack() || left->is_address()) { | |
2252 assert(left == dest, "left and dest must be equal"); | |
2253 | |
2254 Address laddr; | |
2255 if (left->is_single_stack()) { | |
2256 laddr = frame_map()->address_for_slot(left->single_stack_ix()); | |
2257 } else if (left->is_address()) { | |
2258 laddr = as_Address(left->as_address_ptr()); | |
2259 } else { | |
2260 ShouldNotReachHere(); | |
2261 } | |
2262 | |
2263 if (right->is_single_cpu()) { | |
2264 Register rreg = right->as_register(); | |
2265 switch (code) { | |
2266 case lir_add: __ addl(laddr, rreg); break; | |
2267 case lir_sub: __ subl(laddr, rreg); break; | |
2268 default: ShouldNotReachHere(); | |
2269 } | |
2270 } else if (right->is_constant()) { | |
2271 jint c = right->as_constant_ptr()->as_jint(); | |
2272 switch (code) { | |
2273 case lir_add: { | |
304 | 2274 __ incrementl(laddr, c); |
0 | 2275 break; |
2276 } | |
2277 case lir_sub: { | |
304 | 2278 __ decrementl(laddr, c); |
0 | 2279 break; |
2280 } | |
2281 default: ShouldNotReachHere(); | |
2282 } | |
2283 } else { | |
2284 ShouldNotReachHere(); | |
2285 } | |
2286 | |
2287 } else { | |
2288 ShouldNotReachHere(); | |
2289 } | |
2290 } | |
2291 | |
2292 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { | |
2293 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); | |
2294 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); | |
2295 assert(left_index == 0 || right_index == 0, "either must be on top of stack"); | |
2296 | |
2297 bool left_is_tos = (left_index == 0); | |
2298 bool dest_is_tos = (dest_index == 0); | |
2299 int non_tos_index = (left_is_tos ? right_index : left_index); | |
2300 | |
2301 switch (code) { | |
2302 case lir_add: | |
2303 if (pop_fpu_stack) __ faddp(non_tos_index); | |
2304 else if (dest_is_tos) __ fadd (non_tos_index); | |
2305 else __ fadda(non_tos_index); | |
2306 break; | |
2307 | |
2308 case lir_sub: | |
2309 if (left_is_tos) { | |
2310 if (pop_fpu_stack) __ fsubrp(non_tos_index); | |
2311 else if (dest_is_tos) __ fsub (non_tos_index); | |
2312 else __ fsubra(non_tos_index); | |
2313 } else { | |
2314 if (pop_fpu_stack) __ fsubp (non_tos_index); | |
2315 else if (dest_is_tos) __ fsubr (non_tos_index); | |
2316 else __ fsuba (non_tos_index); | |
2317 } | |
2318 break; | |
2319 | |
2320 case lir_mul_strictfp: // fall through | |
2321 case lir_mul: | |
2322 if (pop_fpu_stack) __ fmulp(non_tos_index); | |
2323 else if (dest_is_tos) __ fmul (non_tos_index); | |
2324 else __ fmula(non_tos_index); | |
2325 break; | |
2326 | |
2327 case lir_div_strictfp: // fall through | |
2328 case lir_div: | |
2329 if (left_is_tos) { | |
2330 if (pop_fpu_stack) __ fdivrp(non_tos_index); | |
2331 else if (dest_is_tos) __ fdiv (non_tos_index); | |
2332 else __ fdivra(non_tos_index); | |
2333 } else { | |
2334 if (pop_fpu_stack) __ fdivp (non_tos_index); | |
2335 else if (dest_is_tos) __ fdivr (non_tos_index); | |
2336 else __ fdiva (non_tos_index); | |
2337 } | |
2338 break; | |
2339 | |
2340 case lir_rem: | |
2341 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); | |
2342 __ fremr(noreg); | |
2343 break; | |
2344 | |
2345 default: | |
2346 ShouldNotReachHere(); | |
2347 } | |
2348 } | |
2349 | |
2350 | |
2351 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { | |
2352 if (value->is_double_xmm()) { | |
2353 switch(code) { | |
2354 case lir_abs : | |
2355 { | |
2356 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { | |
2357 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); | |
2358 } | |
2359 __ andpd(dest->as_xmm_double_reg(), | |
2360 ExternalAddress((address)double_signmask_pool)); | |
2361 } | |
2362 break; | |
2363 | |
2364 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; | |
2365 // all other intrinsics are not available in the SSE instruction set, so FPU is used | |
2366 default : ShouldNotReachHere(); | |
2367 } | |
2368 | |
2369 } else if (value->is_double_fpu()) { | |
2370 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); | |
2371 switch(code) { | |
2372 case lir_log : __ flog() ; break; | |
2373 case lir_log10 : __ flog10() ; break; | |
2374 case lir_abs : __ fabs() ; break; | |
2375 case lir_sqrt : __ fsqrt(); break; | |
2376 case lir_sin : | |
2377 // Should consider not saving rbx, if not necessary | |
2378 __ trigfunc('s', op->as_Op2()->fpu_stack_size()); | |
2379 break; | |
2380 case lir_cos : | |
2381 // Should consider not saving rbx, if not necessary | |
2382 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); | |
2383 __ trigfunc('c', op->as_Op2()->fpu_stack_size()); | |
2384 break; | |
2385 case lir_tan : | |
2386 // Should consider not saving rbx, if not necessary | |
2387 __ trigfunc('t', op->as_Op2()->fpu_stack_size()); | |
2388 break; | |
2389 default : ShouldNotReachHere(); | |
2390 } | |
2391 } else { | |
2392 Unimplemented(); | |
2393 } | |
2394 } | |
2395 | |
2396 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { | |
2397 // assert(left->destroys_register(), "check"); | |
2398 if (left->is_single_cpu()) { | |
2399 Register reg = left->as_register(); | |
2400 if (right->is_constant()) { | |
2401 int val = right->as_constant_ptr()->as_jint(); | |
2402 switch (code) { | |
2403 case lir_logic_and: __ andl (reg, val); break; | |
2404 case lir_logic_or: __ orl (reg, val); break; | |
2405 case lir_logic_xor: __ xorl (reg, val); break; | |
2406 default: ShouldNotReachHere(); | |
2407 } | |
2408 } else if (right->is_stack()) { | |
2409 // added support for stack operands | |
2410 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2411 switch (code) { | |
2412 case lir_logic_and: __ andl (reg, raddr); break; | |
2413 case lir_logic_or: __ orl (reg, raddr); break; | |
2414 case lir_logic_xor: __ xorl (reg, raddr); break; | |
2415 default: ShouldNotReachHere(); | |
2416 } | |
2417 } else { | |
2418 Register rright = right->as_register(); | |
2419 switch (code) { | |
304 | 2420 case lir_logic_and: __ andptr (reg, rright); break; |
2421 case lir_logic_or : __ orptr (reg, rright); break; | |
2422 case lir_logic_xor: __ xorptr (reg, rright); break; | |
0 | 2423 default: ShouldNotReachHere(); |
2424 } | |
2425 } | |
2426 move_regs(reg, dst->as_register()); | |
2427 } else { | |
2428 Register l_lo = left->as_register_lo(); | |
2429 Register l_hi = left->as_register_hi(); | |
2430 if (right->is_constant()) { | |
304 | 2431 #ifdef _LP64 |
2432 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); | |
2433 switch (code) { | |
2434 case lir_logic_and: | |
2435 __ andq(l_lo, rscratch1); | |
2436 break; | |
2437 case lir_logic_or: | |
2438 __ orq(l_lo, rscratch1); | |
2439 break; | |
2440 case lir_logic_xor: | |
2441 __ xorq(l_lo, rscratch1); | |
2442 break; | |
2443 default: ShouldNotReachHere(); | |
2444 } | |
2445 #else | |
0 | 2446 int r_lo = right->as_constant_ptr()->as_jint_lo(); |
2447 int r_hi = right->as_constant_ptr()->as_jint_hi(); | |
2448 switch (code) { | |
2449 case lir_logic_and: | |
2450 __ andl(l_lo, r_lo); | |
2451 __ andl(l_hi, r_hi); | |
2452 break; | |
2453 case lir_logic_or: | |
2454 __ orl(l_lo, r_lo); | |
2455 __ orl(l_hi, r_hi); | |
2456 break; | |
2457 case lir_logic_xor: | |
2458 __ xorl(l_lo, r_lo); | |
2459 __ xorl(l_hi, r_hi); | |
2460 break; | |
2461 default: ShouldNotReachHere(); | |
2462 } | |
304 | 2463 #endif // _LP64 |
0 | 2464 } else { |
2465 Register r_lo = right->as_register_lo(); | |
2466 Register r_hi = right->as_register_hi(); | |
2467 assert(l_lo != r_hi, "overwriting registers"); | |
2468 switch (code) { | |
2469 case lir_logic_and: | |
304 | 2470 __ andptr(l_lo, r_lo); |
2471 NOT_LP64(__ andptr(l_hi, r_hi);) | |
0 | 2472 break; |
2473 case lir_logic_or: | |
304 | 2474 __ orptr(l_lo, r_lo); |
2475 NOT_LP64(__ orptr(l_hi, r_hi);) | |
0 | 2476 break; |
2477 case lir_logic_xor: | |
304 | 2478 __ xorptr(l_lo, r_lo); |
2479 NOT_LP64(__ xorptr(l_hi, r_hi);) | |
0 | 2480 break; |
2481 default: ShouldNotReachHere(); | |
2482 } | |
2483 } | |
2484 | |
2485 Register dst_lo = dst->as_register_lo(); | |
2486 Register dst_hi = dst->as_register_hi(); | |
2487 | |
304 | 2488 #ifdef _LP64 |
2489 move_regs(l_lo, dst_lo); | |
2490 #else | |
0 | 2491 if (dst_lo == l_hi) { |
2492 assert(dst_hi != l_lo, "overwriting registers"); | |
2493 move_regs(l_hi, dst_hi); | |
2494 move_regs(l_lo, dst_lo); | |
2495 } else { | |
2496 assert(dst_lo != l_hi, "overwriting registers"); | |
2497 move_regs(l_lo, dst_lo); | |
2498 move_regs(l_hi, dst_hi); | |
2499 } | |
304 | 2500 #endif // _LP64 |
0 | 2501 } |
2502 } | |
2503 | |
2504 | |
2505 // we assume that rax, and rdx can be overwritten | |
2506 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { | |
2507 | |
2508 assert(left->is_single_cpu(), "left must be register"); | |
2509 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); | |
2510 assert(result->is_single_cpu(), "result must be register"); | |
2511 | |
2512 // assert(left->destroys_register(), "check"); | |
2513 // assert(right->destroys_register(), "check"); | |
2514 | |
2515 Register lreg = left->as_register(); | |
2516 Register dreg = result->as_register(); | |
2517 | |
2518 if (right->is_constant()) { | |
2519 int divisor = right->as_constant_ptr()->as_jint(); | |
2520 assert(divisor > 0 && is_power_of_2(divisor), "must be"); | |
2521 if (code == lir_idiv) { | |
2522 assert(lreg == rax, "must be rax,"); | |
2523 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2524 __ cdql(); // sign extend into rdx:rax | |
2525 if (divisor == 2) { | |
2526 __ subl(lreg, rdx); | |
2527 } else { | |
2528 __ andl(rdx, divisor - 1); | |
2529 __ addl(lreg, rdx); | |
2530 } | |
2531 __ sarl(lreg, log2_intptr(divisor)); | |
2532 move_regs(lreg, dreg); | |
2533 } else if (code == lir_irem) { | |
2534 Label done; | |
304 | 2535 __ mov(dreg, lreg); |
0 | 2536 __ andl(dreg, 0x80000000 | (divisor - 1)); |
2537 __ jcc(Assembler::positive, done); | |
2538 __ decrement(dreg); | |
2539 __ orl(dreg, ~(divisor - 1)); | |
2540 __ increment(dreg); | |
2541 __ bind(done); | |
2542 } else { | |
2543 ShouldNotReachHere(); | |
2544 } | |
2545 } else { | |
2546 Register rreg = right->as_register(); | |
2547 assert(lreg == rax, "left register must be rax,"); | |
2548 assert(rreg != rdx, "right register must not be rdx"); | |
2549 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2550 | |
2551 move_regs(lreg, rax); | |
2552 | |
2553 int idivl_offset = __ corrected_idivl(rreg); | |
2554 add_debug_info_for_div0(idivl_offset, info); | |
2555 if (code == lir_irem) { | |
2556 move_regs(rdx, dreg); // result is in rdx | |
2557 } else { | |
2558 move_regs(rax, dreg); | |
2559 } | |
2560 } | |
2561 } | |
2562 | |
2563 | |
2564 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { | |
2565 if (opr1->is_single_cpu()) { | |
2566 Register reg1 = opr1->as_register(); | |
2567 if (opr2->is_single_cpu()) { | |
2568 // cpu register - cpu register | |
304 | 2569 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2570 __ cmpptr(reg1, opr2->as_register()); | |
2571 } else { | |
2572 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); | |
2573 __ cmpl(reg1, opr2->as_register()); | |
2574 } | |
0 | 2575 } else if (opr2->is_stack()) { |
2576 // cpu register - stack | |
304 | 2577 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2578 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2579 } else { | |
2580 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2581 } | |
0 | 2582 } else if (opr2->is_constant()) { |
2583 // cpu register - constant | |
2584 LIR_Const* c = opr2->as_constant_ptr(); | |
2585 if (c->type() == T_INT) { | |
2586 __ cmpl(reg1, c->as_jint()); | |
304 | 2587 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2588 // In 64bit oops are single register | |
0 | 2589 jobject o = c->as_jobject(); |
2590 if (o == NULL) { | |
304 | 2591 __ cmpptr(reg1, (int32_t)NULL_WORD); |
0 | 2592 } else { |
304 | 2593 #ifdef _LP64 |
2594 __ movoop(rscratch1, o); | |
2595 __ cmpptr(reg1, rscratch1); | |
2596 #else | |
0 | 2597 __ cmpoop(reg1, c->as_jobject()); |
304 | 2598 #endif // _LP64 |
0 | 2599 } |
2600 } else { | |
2601 ShouldNotReachHere(); | |
2602 } | |
2603 // cpu register - address | |
2604 } else if (opr2->is_address()) { | |
2605 if (op->info() != NULL) { | |
2606 add_debug_info_for_null_check_here(op->info()); | |
2607 } | |
2608 __ cmpl(reg1, as_Address(opr2->as_address_ptr())); | |
2609 } else { | |
2610 ShouldNotReachHere(); | |
2611 } | |
2612 | |
2613 } else if(opr1->is_double_cpu()) { | |
2614 Register xlo = opr1->as_register_lo(); | |
2615 Register xhi = opr1->as_register_hi(); | |
2616 if (opr2->is_double_cpu()) { | |
304 | 2617 #ifdef _LP64 |
2618 __ cmpptr(xlo, opr2->as_register_lo()); | |
2619 #else | |
0 | 2620 // cpu register - cpu register |
2621 Register ylo = opr2->as_register_lo(); | |
2622 Register yhi = opr2->as_register_hi(); | |
2623 __ subl(xlo, ylo); | |
2624 __ sbbl(xhi, yhi); | |
2625 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { | |
2626 __ orl(xhi, xlo); | |
2627 } | |
304 | 2628 #endif // _LP64 |
0 | 2629 } else if (opr2->is_constant()) { |
2630 // cpu register - constant 0 | |
2631 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); | |
304 | 2632 #ifdef _LP64 |
2633 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); | |
2634 #else | |
0 | 2635 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); |
2636 __ orl(xhi, xlo); | |
304 | 2637 #endif // _LP64 |
0 | 2638 } else { |
2639 ShouldNotReachHere(); | |
2640 } | |
2641 | |
2642 } else if (opr1->is_single_xmm()) { | |
2643 XMMRegister reg1 = opr1->as_xmm_float_reg(); | |
2644 if (opr2->is_single_xmm()) { | |
2645 // xmm register - xmm register | |
2646 __ ucomiss(reg1, opr2->as_xmm_float_reg()); | |
2647 } else if (opr2->is_stack()) { | |
2648 // xmm register - stack | |
2649 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2650 } else if (opr2->is_constant()) { | |
2651 // xmm register - constant | |
2652 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); | |
2653 } else if (opr2->is_address()) { | |
2654 // xmm register - address | |
2655 if (op->info() != NULL) { | |
2656 add_debug_info_for_null_check_here(op->info()); | |
2657 } | |
2658 __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); | |
2659 } else { | |
2660 ShouldNotReachHere(); | |
2661 } | |
2662 | |
2663 } else if (opr1->is_double_xmm()) { | |
2664 XMMRegister reg1 = opr1->as_xmm_double_reg(); | |
2665 if (opr2->is_double_xmm()) { | |
2666 // xmm register - xmm register | |
2667 __ ucomisd(reg1, opr2->as_xmm_double_reg()); | |
2668 } else if (opr2->is_stack()) { | |
2669 // xmm register - stack | |
2670 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); | |
2671 } else if (opr2->is_constant()) { | |
2672 // xmm register - constant | |
2673 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); | |
2674 } else if (opr2->is_address()) { | |
2675 // xmm register - address | |
2676 if (op->info() != NULL) { | |
2677 add_debug_info_for_null_check_here(op->info()); | |
2678 } | |
2679 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); | |
2680 } else { | |
2681 ShouldNotReachHere(); | |
2682 } | |
2683 | |
2684 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { | |
2685 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); | |
2686 assert(opr2->is_fpu_register(), "both must be registers"); | |
2687 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2688 | |
2689 } else if (opr1->is_address() && opr2->is_constant()) { | |
304 | 2690 LIR_Const* c = opr2->as_constant_ptr(); |
2691 #ifdef _LP64 | |
2692 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { | |
2693 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); | |
2694 __ movoop(rscratch1, c->as_jobject()); | |
2695 } | |
2696 #endif // LP64 | |
0 | 2697 if (op->info() != NULL) { |
2698 add_debug_info_for_null_check_here(op->info()); | |
2699 } | |
2700 // special case: address - constant | |
2701 LIR_Address* addr = opr1->as_address_ptr(); | |
2702 if (c->type() == T_INT) { | |
2703 __ cmpl(as_Address(addr), c->as_jint()); | |
304 | 2704 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2705 #ifdef _LP64 | |
2706 // %%% Make this explode if addr isn't reachable until we figure out a | |
2707 // better strategy by giving noreg as the temp for as_Address | |
2708 __ cmpptr(rscratch1, as_Address(addr, noreg)); | |
2709 #else | |
0 | 2710 __ cmpoop(as_Address(addr), c->as_jobject()); |
304 | 2711 #endif // _LP64 |
0 | 2712 } else { |
2713 ShouldNotReachHere(); | |
2714 } | |
2715 | |
2716 } else { | |
2717 ShouldNotReachHere(); | |
2718 } | |
2719 } | |
2720 | |
2721 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { | |
2722 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { | |
2723 if (left->is_single_xmm()) { | |
2724 assert(right->is_single_xmm(), "must match"); | |
2725 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2726 } else if (left->is_double_xmm()) { | |
2727 assert(right->is_double_xmm(), "must match"); | |
2728 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2729 | |
2730 } else { | |
2731 assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); | |
2732 assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); | |
2733 | |
2734 assert(left->fpu() == 0, "left must be on TOS"); | |
2735 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), | |
2736 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2737 } | |
2738 } else { | |
2739 assert(code == lir_cmp_l2i, "check"); | |
304 | 2740 #ifdef _LP64 |
1369 | 2741 Label done; |
2742 Register dest = dst->as_register(); | |
2743 __ cmpptr(left->as_register_lo(), right->as_register_lo()); | |
2744 __ movl(dest, -1); | |
2745 __ jccb(Assembler::less, done); | |
2746 __ set_byte_if_not_zero(dest); | |
2747 __ movzbl(dest, dest); | |
2748 __ bind(done); | |
304 | 2749 #else |
0 | 2750 __ lcmp2int(left->as_register_hi(), |
2751 left->as_register_lo(), | |
2752 right->as_register_hi(), | |
2753 right->as_register_lo()); | |
2754 move_regs(left->as_register_hi(), dst->as_register()); | |
304 | 2755 #endif // _LP64 |
0 | 2756 } |
2757 } | |
2758 | |
2759 | |
2760 void LIR_Assembler::align_call(LIR_Code code) { | |
2761 if (os::is_MP()) { | |
2762 // make sure that the displacement word of the call ends up word aligned | |
2763 int offset = __ offset(); | |
2764 switch (code) { | |
2765 case lir_static_call: | |
2766 case lir_optvirtual_call: | |
1295 | 2767 case lir_dynamic_call: |
0 | 2768 offset += NativeCall::displacement_offset; |
2769 break; | |
2770 case lir_icvirtual_call: | |
2771 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; | |
2772 break; | |
2773 case lir_virtual_call: // currently, sparc-specific for niagara | |
2774 default: ShouldNotReachHere(); | |
2775 } | |
2776 while (offset++ % BytesPerWord != 0) { | |
2777 __ nop(); | |
2778 } | |
2779 } | |
2780 } | |
2781 | |
2782 | |
1295 | 2783 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { |
0 | 2784 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, |
2785 "must be aligned"); | |
1295 | 2786 __ call(AddressLiteral(op->addr(), rtype)); |
1564 | 2787 add_call_info(code_offset(), op->info()); |
0 | 2788 } |
2789 | |
2790 | |
1295 | 2791 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { |
0 | 2792 RelocationHolder rh = virtual_call_Relocation::spec(pc()); |
2793 __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); | |
2794 assert(!os::is_MP() || | |
2795 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, | |
2796 "must be aligned"); | |
1295 | 2797 __ call(AddressLiteral(op->addr(), rh)); |
1564 | 2798 add_call_info(code_offset(), op->info()); |
0 | 2799 } |
2800 | |
2801 | |
2802 /* Currently, vtable-dispatch is only enabled for sparc platforms */ | |
1295 | 2803 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { |
0 | 2804 ShouldNotReachHere(); |
2805 } | |
2806 | |
1295 | 2807 |
0 | 2808 void LIR_Assembler::emit_static_call_stub() { |
2809 address call_pc = __ pc(); | |
2810 address stub = __ start_a_stub(call_stub_size); | |
2811 if (stub == NULL) { | |
2812 bailout("static call stub overflow"); | |
2813 return; | |
2814 } | |
2815 | |
2816 int start = __ offset(); | |
2817 if (os::is_MP()) { | |
2818 // make sure that the displacement word of the call ends up word aligned | |
2819 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; | |
2820 while (offset++ % BytesPerWord != 0) { | |
2821 __ nop(); | |
2822 } | |
2823 } | |
2824 __ relocate(static_stub_Relocation::spec(call_pc)); | |
2825 __ movoop(rbx, (jobject)NULL); | |
2826 // must be set to -1 at code generation time | |
2827 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); | |
304 | 2828 // On 64bit this will die since it will take a movq & jmp, must be only a jmp |
2829 __ jump(RuntimeAddress(__ pc())); | |
0 | 2830 |
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2831 assert(__ offset() - start <= call_stub_size, "stub too big"); |
0 | 2832 __ end_a_stub(); |
2833 } | |
2834 | |
2835 | |
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2836 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { |
0 | 2837 assert(exceptionOop->as_register() == rax, "must match"); |
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2838 assert(exceptionPC->as_register() == rdx, "must match"); |
0 | 2839 |
2840 // exception object is not added to oop map by LinearScan | |
2841 // (LinearScan assumes that no oops are in fixed registers) | |
2842 info->add_register_oop(exceptionOop); | |
2843 Runtime1::StubID unwind_id; | |
2844 | |
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2845 // get current pc information |
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2846 // pc is only needed if the method has an exception handler, the unwind code does not need it. |
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2847 int pc_for_athrow_offset = __ offset(); |
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2848 InternalAddress pc_for_athrow(__ pc()); |
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2849 __ lea(exceptionPC->as_register(), pc_for_athrow); |
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2850 add_call_info(pc_for_athrow_offset, info); // for exception handler |
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2851 |
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2852 __ verify_not_null_oop(rax); |
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2853 // search an exception handler (rax: exception oop, rdx: throwing pc) |
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2854 if (compilation()->has_fpu_code()) { |
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2855 unwind_id = Runtime1::handle_exception_id; |
0 | 2856 } else { |
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2857 unwind_id = Runtime1::handle_exception_nofpu_id; |
0 | 2858 } |
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2859 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); |
0 | 2860 |
2861 // enough room for two byte trap | |
2862 __ nop(); | |
2863 } | |
2864 | |
2865 | |
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2866 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { |
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2867 assert(exceptionOop->as_register() == rax, "must match"); |
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2868 |
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2869 __ jmp(_unwind_handler_entry); |
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2870 } |
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2871 |
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2872 |
0 | 2873 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { |
2874 | |
2875 // optimized version for linear scan: | |
2876 // * count must be already in ECX (guaranteed by LinearScan) | |
2877 // * left and dest must be equal | |
2878 // * tmp must be unused | |
2879 assert(count->as_register() == SHIFT_count, "count must be in ECX"); | |
2880 assert(left == dest, "left and dest must be equal"); | |
2881 assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); | |
2882 | |
2883 if (left->is_single_cpu()) { | |
2884 Register value = left->as_register(); | |
2885 assert(value != SHIFT_count, "left cannot be ECX"); | |
2886 | |
2887 switch (code) { | |
2888 case lir_shl: __ shll(value); break; | |
2889 case lir_shr: __ sarl(value); break; | |
2890 case lir_ushr: __ shrl(value); break; | |
2891 default: ShouldNotReachHere(); | |
2892 } | |
2893 } else if (left->is_double_cpu()) { | |
2894 Register lo = left->as_register_lo(); | |
2895 Register hi = left->as_register_hi(); | |
2896 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); | |
304 | 2897 #ifdef _LP64 |
2898 switch (code) { | |
2899 case lir_shl: __ shlptr(lo); break; | |
2900 case lir_shr: __ sarptr(lo); break; | |
2901 case lir_ushr: __ shrptr(lo); break; | |
2902 default: ShouldNotReachHere(); | |
2903 } | |
2904 #else | |
0 | 2905 |
2906 switch (code) { | |
2907 case lir_shl: __ lshl(hi, lo); break; | |
2908 case lir_shr: __ lshr(hi, lo, true); break; | |
2909 case lir_ushr: __ lshr(hi, lo, false); break; | |
2910 default: ShouldNotReachHere(); | |
2911 } | |
304 | 2912 #endif // LP64 |
0 | 2913 } else { |
2914 ShouldNotReachHere(); | |
2915 } | |
2916 } | |
2917 | |
2918 | |
2919 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { | |
2920 if (dest->is_single_cpu()) { | |
2921 // first move left into dest so that left is not destroyed by the shift | |
2922 Register value = dest->as_register(); | |
2923 count = count & 0x1F; // Java spec | |
2924 | |
2925 move_regs(left->as_register(), value); | |
2926 switch (code) { | |
2927 case lir_shl: __ shll(value, count); break; | |
2928 case lir_shr: __ sarl(value, count); break; | |
2929 case lir_ushr: __ shrl(value, count); break; | |
2930 default: ShouldNotReachHere(); | |
2931 } | |
2932 } else if (dest->is_double_cpu()) { | |
304 | 2933 #ifndef _LP64 |
0 | 2934 Unimplemented(); |
304 | 2935 #else |
2936 // first move left into dest so that left is not destroyed by the shift | |
2937 Register value = dest->as_register_lo(); | |
2938 count = count & 0x1F; // Java spec | |
2939 | |
2940 move_regs(left->as_register_lo(), value); | |
2941 switch (code) { | |
2942 case lir_shl: __ shlptr(value, count); break; | |
2943 case lir_shr: __ sarptr(value, count); break; | |
2944 case lir_ushr: __ shrptr(value, count); break; | |
2945 default: ShouldNotReachHere(); | |
2946 } | |
2947 #endif // _LP64 | |
0 | 2948 } else { |
2949 ShouldNotReachHere(); | |
2950 } | |
2951 } | |
2952 | |
2953 | |
2954 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { | |
2955 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2956 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2957 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 2958 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); |
0 | 2959 } |
2960 | |
2961 | |
2962 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { | |
2963 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2964 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2965 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 2966 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); |
0 | 2967 } |
2968 | |
2969 | |
2970 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { | |
2971 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
2972 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
2973 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
2974 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); | |
2975 } | |
2976 | |
2977 | |
2978 // This code replaces a call to arraycopy; no exception may | |
2979 // be thrown in this code, they must be thrown in the System.arraycopy | |
2980 // activation frame; we could save some checks if this would not be the case | |
2981 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { | |
2982 ciArrayKlass* default_type = op->expected_type(); | |
2983 Register src = op->src()->as_register(); | |
2984 Register dst = op->dst()->as_register(); | |
2985 Register src_pos = op->src_pos()->as_register(); | |
2986 Register dst_pos = op->dst_pos()->as_register(); | |
2987 Register length = op->length()->as_register(); | |
2988 Register tmp = op->tmp()->as_register(); | |
2989 | |
2990 CodeStub* stub = op->stub(); | |
2991 int flags = op->flags(); | |
2992 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; | |
2993 if (basic_type == T_ARRAY) basic_type = T_OBJECT; | |
2994 | |
2995 // if we don't know anything or it's an object array, just go through the generic arraycopy | |
2996 if (default_type == NULL) { | |
2997 Label done; | |
2998 // save outgoing arguments on stack in case call to System.arraycopy is needed | |
2999 // HACK ALERT. This code used to push the parameters in a hardwired fashion | |
3000 // for interpreter calling conventions. Now we have to do it in new style conventions. | |
3001 // For the moment until C1 gets the new register allocator I just force all the | |
3002 // args to the right place (except the register args) and then on the back side | |
3003 // reload the register args properly if we go slow path. Yuck | |
3004 | |
3005 // These are proper for the calling convention | |
3006 | |
3007 store_parameter(length, 2); | |
3008 store_parameter(dst_pos, 1); | |
3009 store_parameter(dst, 0); | |
3010 | |
3011 // these are just temporary placements until we need to reload | |
3012 store_parameter(src_pos, 3); | |
3013 store_parameter(src, 4); | |
304 | 3014 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) |
3015 | |
3016 address entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); | |
0 | 3017 |
3018 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint | |
304 | 3019 #ifdef _LP64 |
3020 // The arguments are in java calling convention so we can trivially shift them to C | |
3021 // convention | |
3022 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3023 __ mov(c_rarg0, j_rarg0); | |
3024 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3025 __ mov(c_rarg1, j_rarg1); | |
3026 assert_different_registers(c_rarg2, j_rarg3, j_rarg4); | |
3027 __ mov(c_rarg2, j_rarg2); | |
3028 assert_different_registers(c_rarg3, j_rarg4); | |
3029 __ mov(c_rarg3, j_rarg3); | |
3030 #ifdef _WIN64 | |
3031 // Allocate abi space for args but be sure to keep stack aligned | |
3032 __ subptr(rsp, 6*wordSize); | |
3033 store_parameter(j_rarg4, 4); | |
3034 __ call(RuntimeAddress(entry)); | |
3035 __ addptr(rsp, 6*wordSize); | |
3036 #else | |
3037 __ mov(c_rarg4, j_rarg4); | |
3038 __ call(RuntimeAddress(entry)); | |
3039 #endif // _WIN64 | |
3040 #else | |
3041 __ push(length); | |
3042 __ push(dst_pos); | |
3043 __ push(dst); | |
3044 __ push(src_pos); | |
3045 __ push(src); | |
0 | 3046 __ call_VM_leaf(entry, 5); // removes pushed parameter from the stack |
3047 | |
304 | 3048 #endif // _LP64 |
3049 | |
0 | 3050 __ cmpl(rax, 0); |
3051 __ jcc(Assembler::equal, *stub->continuation()); | |
3052 | |
3053 // Reload values from the stack so they are where the stub | |
3054 // expects them. | |
304 | 3055 __ movptr (dst, Address(rsp, 0*BytesPerWord)); |
3056 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); | |
3057 __ movptr (length, Address(rsp, 2*BytesPerWord)); | |
3058 __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); | |
3059 __ movptr (src, Address(rsp, 4*BytesPerWord)); | |
0 | 3060 __ jmp(*stub->entry()); |
3061 | |
3062 __ bind(*stub->continuation()); | |
3063 return; | |
3064 } | |
3065 | |
3066 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); | |
3067 | |
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3068 int elem_size = type2aelembytes(basic_type); |
0 | 3069 int shift_amount; |
3070 Address::ScaleFactor scale; | |
3071 | |
3072 switch (elem_size) { | |
3073 case 1 : | |
3074 shift_amount = 0; | |
3075 scale = Address::times_1; | |
3076 break; | |
3077 case 2 : | |
3078 shift_amount = 1; | |
3079 scale = Address::times_2; | |
3080 break; | |
3081 case 4 : | |
3082 shift_amount = 2; | |
3083 scale = Address::times_4; | |
3084 break; | |
3085 case 8 : | |
3086 shift_amount = 3; | |
3087 scale = Address::times_8; | |
3088 break; | |
3089 default: | |
3090 ShouldNotReachHere(); | |
3091 } | |
3092 | |
3093 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); | |
3094 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); | |
3095 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); | |
3096 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); | |
3097 | |
304 | 3098 // length and pos's are all sign extended at this point on 64bit |
3099 | |
0 | 3100 // test for NULL |
3101 if (flags & LIR_OpArrayCopy::src_null_check) { | |
304 | 3102 __ testptr(src, src); |
0 | 3103 __ jcc(Assembler::zero, *stub->entry()); |
3104 } | |
3105 if (flags & LIR_OpArrayCopy::dst_null_check) { | |
304 | 3106 __ testptr(dst, dst); |
0 | 3107 __ jcc(Assembler::zero, *stub->entry()); |
3108 } | |
3109 | |
3110 // check if negative | |
3111 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { | |
3112 __ testl(src_pos, src_pos); | |
3113 __ jcc(Assembler::less, *stub->entry()); | |
3114 } | |
3115 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { | |
3116 __ testl(dst_pos, dst_pos); | |
3117 __ jcc(Assembler::less, *stub->entry()); | |
3118 } | |
3119 if (flags & LIR_OpArrayCopy::length_positive_check) { | |
3120 __ testl(length, length); | |
3121 __ jcc(Assembler::less, *stub->entry()); | |
3122 } | |
3123 | |
3124 if (flags & LIR_OpArrayCopy::src_range_check) { | |
304 | 3125 __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); |
0 | 3126 __ cmpl(tmp, src_length_addr); |
3127 __ jcc(Assembler::above, *stub->entry()); | |
3128 } | |
3129 if (flags & LIR_OpArrayCopy::dst_range_check) { | |
304 | 3130 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); |
0 | 3131 __ cmpl(tmp, dst_length_addr); |
3132 __ jcc(Assembler::above, *stub->entry()); | |
3133 } | |
3134 | |
3135 if (flags & LIR_OpArrayCopy::type_check) { | |
304 | 3136 __ movptr(tmp, src_klass_addr); |
3137 __ cmpptr(tmp, dst_klass_addr); | |
0 | 3138 __ jcc(Assembler::notEqual, *stub->entry()); |
3139 } | |
3140 | |
3141 #ifdef ASSERT | |
3142 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { | |
3143 // Sanity check the known type with the incoming class. For the | |
3144 // primitive case the types must match exactly with src.klass and | |
3145 // dst.klass each exactly matching the default type. For the | |
3146 // object array case, if no type check is needed then either the | |
3147 // dst type is exactly the expected type and the src type is a | |
3148 // subtype which we can't check or src is the same array as dst | |
3149 // but not necessarily exactly of type default_type. | |
3150 Label known_ok, halt; | |
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3151 __ movoop(tmp, default_type->constant_encoding()); |
0 | 3152 if (basic_type != T_OBJECT) { |
304 | 3153 __ cmpptr(tmp, dst_klass_addr); |
0 | 3154 __ jcc(Assembler::notEqual, halt); |
304 | 3155 __ cmpptr(tmp, src_klass_addr); |
0 | 3156 __ jcc(Assembler::equal, known_ok); |
3157 } else { | |
304 | 3158 __ cmpptr(tmp, dst_klass_addr); |
0 | 3159 __ jcc(Assembler::equal, known_ok); |
304 | 3160 __ cmpptr(src, dst); |
0 | 3161 __ jcc(Assembler::equal, known_ok); |
3162 } | |
3163 __ bind(halt); | |
3164 __ stop("incorrect type information in arraycopy"); | |
3165 __ bind(known_ok); | |
3166 } | |
3167 #endif | |
3168 | |
304 | 3169 if (shift_amount > 0 && basic_type != T_OBJECT) { |
3170 __ shlptr(length, shift_amount); | |
3171 } | |
3172 | |
3173 #ifdef _LP64 | |
3174 assert_different_registers(c_rarg0, dst, dst_pos, length); | |
1060 | 3175 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null |
304 | 3176 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3177 assert_different_registers(c_rarg1, length); | |
1060 | 3178 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null |
304 | 3179 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3180 __ mov(c_rarg2, length); | |
3181 | |
3182 #else | |
3183 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
0 | 3184 store_parameter(tmp, 0); |
304 | 3185 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
0 | 3186 store_parameter(tmp, 1); |
3187 store_parameter(length, 2); | |
304 | 3188 #endif // _LP64 |
0 | 3189 if (basic_type == T_OBJECT) { |
3190 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy), 0); | |
3191 } else { | |
3192 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy), 0); | |
3193 } | |
3194 | |
3195 __ bind(*stub->continuation()); | |
3196 } | |
3197 | |
3198 | |
3199 void LIR_Assembler::emit_lock(LIR_OpLock* op) { | |
3200 Register obj = op->obj_opr()->as_register(); // may not be an oop | |
3201 Register hdr = op->hdr_opr()->as_register(); | |
3202 Register lock = op->lock_opr()->as_register(); | |
3203 if (!UseFastLocking) { | |
3204 __ jmp(*op->stub()->entry()); | |
3205 } else if (op->code() == lir_lock) { | |
3206 Register scratch = noreg; | |
3207 if (UseBiasedLocking) { | |
3208 scratch = op->scratch_opr()->as_register(); | |
3209 } | |
3210 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3211 // add debug info for NullPointerException only if one is possible | |
3212 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); | |
3213 if (op->info() != NULL) { | |
3214 add_debug_info_for_null_check(null_check_offset, op->info()); | |
3215 } | |
3216 // done | |
3217 } else if (op->code() == lir_unlock) { | |
3218 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3219 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); | |
3220 } else { | |
3221 Unimplemented(); | |
3222 } | |
3223 __ bind(*op->stub()->continuation()); | |
3224 } | |
3225 | |
3226 | |
3227 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { | |
3228 ciMethod* method = op->profiled_method(); | |
3229 int bci = op->profiled_bci(); | |
3230 | |
3231 // Update counter for all call types | |
3232 ciMethodData* md = method->method_data(); | |
3233 if (md == NULL) { | |
3234 bailout("out of memory building methodDataOop"); | |
3235 return; | |
3236 } | |
3237 ciProfileData* data = md->bci_to_data(bci); | |
3238 assert(data->is_CounterData(), "need CounterData for calls"); | |
3239 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); | |
3240 Register mdo = op->mdo()->as_register(); | |
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3241 __ movoop(mdo, md->constant_encoding()); |
0 | 3242 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); |
3243 Bytecodes::Code bc = method->java_code_at_bci(bci); | |
3244 // Perform additional virtual call profiling for invokevirtual and | |
3245 // invokeinterface bytecodes | |
3246 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && | |
3247 Tier1ProfileVirtualCalls) { | |
3248 assert(op->recv()->is_single_cpu(), "recv must be allocated"); | |
3249 Register recv = op->recv()->as_register(); | |
3250 assert_different_registers(mdo, recv); | |
3251 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); | |
3252 ciKlass* known_klass = op->known_holder(); | |
3253 if (Tier1OptimizeVirtualCallProfiling && known_klass != NULL) { | |
3254 // We know the type that will be seen at this call site; we can | |
3255 // statically update the methodDataOop rather than needing to do | |
3256 // dynamic tests on the receiver type | |
3257 | |
3258 // NOTE: we should probably put a lock around this search to | |
3259 // avoid collisions by concurrent compilations | |
3260 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; | |
3261 uint i; | |
3262 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3263 ciKlass* receiver = vc_data->receiver(i); | |
3264 if (known_klass->equals(receiver)) { | |
3265 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
3266 __ addl(data_addr, DataLayout::counter_increment); | |
3267 return; | |
3268 } | |
3269 } | |
3270 | |
3271 // Receiver type not found in profile data; select an empty slot | |
3272 | |
3273 // Note that this is less efficient than it should be because it | |
3274 // always does a write to the receiver part of the | |
3275 // VirtualCallData rather than just the first time | |
3276 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3277 ciKlass* receiver = vc_data->receiver(i); | |
3278 if (receiver == NULL) { | |
3279 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
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3280 __ movoop(recv_addr, known_klass->constant_encoding()); |
0 | 3281 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); |
3282 __ addl(data_addr, DataLayout::counter_increment); | |
3283 return; | |
3284 } | |
3285 } | |
3286 } else { | |
304 | 3287 __ movptr(recv, Address(recv, oopDesc::klass_offset_in_bytes())); |
0 | 3288 Label update_done; |
3289 uint i; | |
3290 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3291 Label next_test; | |
3292 // See if the receiver is receiver[n]. | |
304 | 3293 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)))); |
0 | 3294 __ jcc(Assembler::notEqual, next_test); |
3295 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
3296 __ addl(data_addr, DataLayout::counter_increment); | |
3297 __ jmp(update_done); | |
3298 __ bind(next_test); | |
3299 } | |
3300 | |
3301 // Didn't find receiver; find next empty slot and fill it in | |
3302 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3303 Label next_test; | |
3304 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
304 | 3305 __ cmpptr(recv_addr, (int32_t)NULL_WORD); |
0 | 3306 __ jcc(Assembler::notEqual, next_test); |
304 | 3307 __ movptr(recv_addr, recv); |
0 | 3308 __ movl(Address(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))), DataLayout::counter_increment); |
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diff
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3309 __ jmp(update_done); |
0 | 3310 __ bind(next_test); |
3311 } | |
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diff
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|
3312 // Receiver did not match any saved receiver and there is no empty row for it. |
1251
576e77447e3c
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1206
diff
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|
3313 // Increment total counter to indicate polymorphic case. |
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|
3314 __ addl(counter_addr, DataLayout::counter_increment); |
0 | 3315 |
3316 __ bind(update_done); | |
3317 } | |
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|
3318 } else { |
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|
3319 // Static call |
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|
3320 __ addl(counter_addr, DataLayout::counter_increment); |
0 | 3321 } |
3322 } | |
3323 | |
3324 | |
3325 void LIR_Assembler::emit_delay(LIR_OpDelay*) { | |
3326 Unimplemented(); | |
3327 } | |
3328 | |
3329 | |
3330 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { | |
304 | 3331 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); |
0 | 3332 } |
3333 | |
3334 | |
3335 void LIR_Assembler::align_backward_branch_target() { | |
3336 __ align(BytesPerWord); | |
3337 } | |
3338 | |
3339 | |
3340 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { | |
3341 if (left->is_single_cpu()) { | |
3342 __ negl(left->as_register()); | |
3343 move_regs(left->as_register(), dest->as_register()); | |
3344 | |
3345 } else if (left->is_double_cpu()) { | |
3346 Register lo = left->as_register_lo(); | |
304 | 3347 #ifdef _LP64 |
3348 Register dst = dest->as_register_lo(); | |
3349 __ movptr(dst, lo); | |
3350 __ negptr(dst); | |
3351 #else | |
0 | 3352 Register hi = left->as_register_hi(); |
3353 __ lneg(hi, lo); | |
3354 if (dest->as_register_lo() == hi) { | |
3355 assert(dest->as_register_hi() != lo, "destroying register"); | |
3356 move_regs(hi, dest->as_register_hi()); | |
3357 move_regs(lo, dest->as_register_lo()); | |
3358 } else { | |
3359 move_regs(lo, dest->as_register_lo()); | |
3360 move_regs(hi, dest->as_register_hi()); | |
3361 } | |
304 | 3362 #endif // _LP64 |
0 | 3363 |
3364 } else if (dest->is_single_xmm()) { | |
3365 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { | |
3366 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); | |
3367 } | |
3368 __ xorps(dest->as_xmm_float_reg(), | |
3369 ExternalAddress((address)float_signflip_pool)); | |
3370 | |
3371 } else if (dest->is_double_xmm()) { | |
3372 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { | |
3373 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); | |
3374 } | |
3375 __ xorpd(dest->as_xmm_double_reg(), | |
3376 ExternalAddress((address)double_signflip_pool)); | |
3377 | |
3378 } else if (left->is_single_fpu() || left->is_double_fpu()) { | |
3379 assert(left->fpu() == 0, "arg must be on TOS"); | |
3380 assert(dest->fpu() == 0, "dest must be TOS"); | |
3381 __ fchs(); | |
3382 | |
3383 } else { | |
3384 ShouldNotReachHere(); | |
3385 } | |
3386 } | |
3387 | |
3388 | |
3389 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { | |
3390 assert(addr->is_address() && dest->is_register(), "check"); | |
304 | 3391 Register reg; |
3392 reg = dest->as_pointer_register(); | |
3393 __ lea(reg, as_Address(addr->as_address_ptr())); | |
0 | 3394 } |
3395 | |
3396 | |
3397 | |
3398 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { | |
3399 assert(!tmp->is_valid(), "don't need temporary"); | |
3400 __ call(RuntimeAddress(dest)); | |
3401 if (info != NULL) { | |
3402 add_call_info_here(info); | |
3403 } | |
3404 } | |
3405 | |
3406 | |
3407 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { | |
3408 assert(type == T_LONG, "only for volatile long fields"); | |
3409 | |
3410 if (info != NULL) { | |
3411 add_debug_info_for_null_check_here(info); | |
3412 } | |
3413 | |
3414 if (src->is_double_xmm()) { | |
3415 if (dest->is_double_cpu()) { | |
304 | 3416 #ifdef _LP64 |
3417 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); | |
3418 #else | |
3419 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); | |
0 | 3420 __ psrlq(src->as_xmm_double_reg(), 32); |
304 | 3421 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); |
3422 #endif // _LP64 | |
0 | 3423 } else if (dest->is_double_stack()) { |
3424 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); | |
3425 } else if (dest->is_address()) { | |
3426 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); | |
3427 } else { | |
3428 ShouldNotReachHere(); | |
3429 } | |
3430 | |
3431 } else if (dest->is_double_xmm()) { | |
3432 if (src->is_double_stack()) { | |
3433 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); | |
3434 } else if (src->is_address()) { | |
3435 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); | |
3436 } else { | |
3437 ShouldNotReachHere(); | |
3438 } | |
3439 | |
3440 } else if (src->is_double_fpu()) { | |
3441 assert(src->fpu_regnrLo() == 0, "must be TOS"); | |
3442 if (dest->is_double_stack()) { | |
3443 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); | |
3444 } else if (dest->is_address()) { | |
3445 __ fistp_d(as_Address(dest->as_address_ptr())); | |
3446 } else { | |
3447 ShouldNotReachHere(); | |
3448 } | |
3449 | |
3450 } else if (dest->is_double_fpu()) { | |
3451 assert(dest->fpu_regnrLo() == 0, "must be TOS"); | |
3452 if (src->is_double_stack()) { | |
3453 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); | |
3454 } else if (src->is_address()) { | |
3455 __ fild_d(as_Address(src->as_address_ptr())); | |
3456 } else { | |
3457 ShouldNotReachHere(); | |
3458 } | |
3459 } else { | |
3460 ShouldNotReachHere(); | |
3461 } | |
3462 } | |
3463 | |
3464 | |
3465 void LIR_Assembler::membar() { | |
304 | 3466 // QQQ sparc TSO uses this, |
3467 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); | |
0 | 3468 } |
3469 | |
3470 void LIR_Assembler::membar_acquire() { | |
3471 // No x86 machines currently require load fences | |
3472 // __ load_fence(); | |
3473 } | |
3474 | |
3475 void LIR_Assembler::membar_release() { | |
3476 // No x86 machines currently require store fences | |
3477 // __ store_fence(); | |
3478 } | |
3479 | |
3480 void LIR_Assembler::get_thread(LIR_Opr result_reg) { | |
3481 assert(result_reg->is_register(), "check"); | |
304 | 3482 #ifdef _LP64 |
3483 // __ get_thread(result_reg->as_register_lo()); | |
3484 __ mov(result_reg->as_register(), r15_thread); | |
3485 #else | |
0 | 3486 __ get_thread(result_reg->as_register()); |
304 | 3487 #endif // _LP64 |
0 | 3488 } |
3489 | |
3490 | |
3491 void LIR_Assembler::peephole(LIR_List*) { | |
3492 // do nothing for now | |
3493 } | |
3494 | |
3495 | |
3496 #undef __ |