Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 1783:d5d065957597
6953144: Tiered compilation
Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation.
Reviewed-by: kvn, never, phh, twisti
author | iveresov |
---|---|
date | Fri, 03 Sep 2010 17:51:07 -0700 |
parents | e9ff18c4ace7 |
children | 7f9553bedfd5 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
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 |
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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 { | |
29
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changeset
|
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 | |
1783 | 1616 void LIR_Assembler::type_profile_helper(Register mdo, |
1617 ciMethodData *md, ciProfileData *data, | |
1618 Register recv, Label* update_done) { | |
1619 uint i; | |
1620 for (i = 0; i < ReceiverTypeData::row_limit(); i++) { | |
1621 Label next_test; | |
1622 // See if the receiver is receiver[n]. | |
1623 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)))); | |
1624 __ jccb(Assembler::notEqual, next_test); | |
1625 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))); | |
1626 __ addptr(data_addr, DataLayout::counter_increment); | |
1627 __ jmpb(*update_done); | |
1628 __ bind(next_test); | |
1629 } | |
1630 | |
1631 // Didn't find receiver; find next empty slot and fill it in | |
1632 for (i = 0; i < ReceiverTypeData::row_limit(); i++) { | |
1633 Label next_test; | |
1634 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))); | |
1635 __ cmpptr(recv_addr, (intptr_t)NULL_WORD); | |
1636 __ jccb(Assembler::notEqual, next_test); | |
1637 __ movptr(recv_addr, recv); | |
1638 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment); | |
1639 __ jmpb(*update_done); | |
1640 __ bind(next_test); | |
1641 } | |
1642 } | |
1643 | |
1644 void LIR_Assembler::emit_checkcast(LIR_OpTypeCheck *op) { | |
1645 assert(op->code() == lir_checkcast, "Invalid operation"); | |
1646 // we always need a stub for the failure case. | |
1647 CodeStub* stub = op->stub(); | |
1648 Register obj = op->object()->as_register(); | |
1649 Register k_RInfo = op->tmp1()->as_register(); | |
1650 Register klass_RInfo = op->tmp2()->as_register(); | |
1651 Register dst = op->result_opr()->as_register(); | |
1652 ciKlass* k = op->klass(); | |
1653 Register Rtmp1 = noreg; | |
1654 | |
1655 // check if it needs to be profiled | |
1656 ciMethodData* md; | |
1657 ciProfileData* data; | |
1658 | |
1659 if (op->should_profile()) { | |
1660 ciMethod* method = op->profiled_method(); | |
1661 assert(method != NULL, "Should have method"); | |
1662 int bci = op->profiled_bci(); | |
1663 md = method->method_data(); | |
1664 if (md == NULL) { | |
1665 bailout("out of memory building methodDataOop"); | |
1666 return; | |
1667 } | |
1668 data = md->bci_to_data(bci); | |
1669 assert(data != NULL, "need data for checkcast"); | |
1670 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for checkcast"); | |
1671 } | |
1672 Label profile_cast_failure; | |
1673 | |
1674 Label done, done_null; | |
1675 // Where to go in case of cast failure | |
1676 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); | |
1677 | |
1678 if (obj == k_RInfo) { | |
1679 k_RInfo = dst; | |
1680 } else if (obj == klass_RInfo) { | |
1681 klass_RInfo = dst; | |
1682 } | |
1683 if (k->is_loaded()) { | |
1684 select_different_registers(obj, dst, k_RInfo, klass_RInfo); | |
1685 } else { | |
1686 Rtmp1 = op->tmp3()->as_register(); | |
1687 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); | |
1688 } | |
1689 | |
1690 assert_different_registers(obj, k_RInfo, klass_RInfo); | |
1691 if (!k->is_loaded()) { | |
1692 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
1693 } else { | |
1694 #ifdef _LP64 | |
1695 __ movoop(k_RInfo, k->constant_encoding()); | |
1696 #endif // _LP64 | |
1697 } | |
1698 assert(obj != k_RInfo, "must be different"); | |
1699 | |
1700 __ cmpptr(obj, (int32_t)NULL_WORD); | |
1701 if (op->should_profile()) { | |
1702 Label profile_done; | |
1703 __ jccb(Assembler::notEqual, profile_done); | |
1704 // Object is null; update methodDataOop | |
1705 Register mdo = klass_RInfo; | |
1706 __ movoop(mdo, md->constant_encoding()); | |
1707 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); | |
1708 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); | |
1709 __ orl(data_addr, header_bits); | |
1710 __ jmp(done_null); | |
1711 __ bind(profile_done); | |
1712 } else { | |
1713 __ jcc(Assembler::equal, done_null); | |
1714 } | |
1715 __ verify_oop(obj); | |
1716 | |
1717 if (op->fast_check()) { | |
1718 // get object classo | |
1719 // not a safepoint as obj null check happens earlier | |
1720 if (k->is_loaded()) { | |
1721 #ifdef _LP64 | |
1722 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1723 #else | |
1724 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); | |
1725 #endif // _LP64 | |
1726 } else { | |
1727 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1728 } | |
1729 __ jcc(Assembler::notEqual, *failure_target); | |
1730 } else { | |
1731 // get object class | |
1732 // not a safepoint as obj null check happens earlier | |
1733 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1734 if (k->is_loaded()) { | |
1735 // See if we get an immediate positive hit | |
1736 #ifdef _LP64 | |
1737 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); | |
1738 #else | |
1739 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); | |
1740 #endif // _LP64 | |
1741 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { | |
1742 __ jcc(Assembler::notEqual, *failure_target); | |
1743 } else { | |
1744 // See if we get an immediate positive hit | |
1745 __ jcc(Assembler::equal, done); | |
1746 // check for self | |
1747 #ifdef _LP64 | |
1748 __ cmpptr(klass_RInfo, k_RInfo); | |
1749 #else | |
1750 __ cmpoop(klass_RInfo, k->constant_encoding()); | |
1751 #endif // _LP64 | |
1752 __ jcc(Assembler::equal, done); | |
1753 | |
1754 __ push(klass_RInfo); | |
1755 #ifdef _LP64 | |
1756 __ push(k_RInfo); | |
1757 #else | |
1758 __ pushoop(k->constant_encoding()); | |
1759 #endif // _LP64 | |
1760 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); | |
1761 __ pop(klass_RInfo); | |
1762 __ pop(klass_RInfo); | |
1763 // result is a boolean | |
1764 __ cmpl(klass_RInfo, 0); | |
1765 __ jcc(Assembler::equal, *failure_target); | |
1766 } | |
1767 } else { | |
1768 // perform the fast part of the checking logic | |
1769 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, failure_target, NULL); | |
1770 // call out-of-line instance of __ check_klass_subtype_slow_path(...): | |
1771 __ push(klass_RInfo); | |
1772 __ push(k_RInfo); | |
1773 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); | |
1774 __ pop(klass_RInfo); | |
1775 __ pop(k_RInfo); | |
1776 // result is a boolean | |
1777 __ cmpl(k_RInfo, 0); | |
1778 __ jcc(Assembler::equal, *failure_target); | |
1779 } | |
1780 } | |
1781 __ bind(done); | |
1782 | |
1783 if (op->should_profile()) { | |
1784 Register mdo = klass_RInfo, recv = k_RInfo; | |
1785 __ movoop(mdo, md->constant_encoding()); | |
1786 __ movptr(recv, Address(obj, oopDesc::klass_offset_in_bytes())); | |
1787 Label update_done; | |
1788 type_profile_helper(mdo, md, data, recv, &update_done); | |
1789 __ jmpb(update_done); | |
1790 | |
1791 __ bind(profile_cast_failure); | |
1792 __ movoop(mdo, md->constant_encoding()); | |
1793 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); | |
1794 __ subptr(counter_addr, DataLayout::counter_increment); | |
1795 __ jmp(*stub->entry()); | |
1796 | |
1797 __ bind(update_done); | |
1798 } | |
1799 __ bind(done_null); | |
1800 if (dst != obj) { | |
1801 __ mov(dst, obj); | |
1802 } | |
1803 } | |
0 | 1804 |
1805 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { | |
1806 LIR_Code code = op->code(); | |
1807 if (code == lir_store_check) { | |
1808 Register value = op->object()->as_register(); | |
1809 Register array = op->array()->as_register(); | |
1810 Register k_RInfo = op->tmp1()->as_register(); | |
1811 Register klass_RInfo = op->tmp2()->as_register(); | |
1812 Register Rtmp1 = op->tmp3()->as_register(); | |
1813 | |
1814 CodeStub* stub = op->stub(); | |
1815 Label done; | |
304 | 1816 __ cmpptr(value, (int32_t)NULL_WORD); |
0 | 1817 __ jcc(Assembler::equal, done); |
1818 add_debug_info_for_null_check_here(op->info_for_exception()); | |
304 | 1819 __ movptr(k_RInfo, Address(array, oopDesc::klass_offset_in_bytes())); |
1820 __ movptr(klass_RInfo, Address(value, oopDesc::klass_offset_in_bytes())); | |
0 | 1821 |
1822 // get instance klass | |
304 | 1823 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); |
644
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
622
diff
changeset
|
1824 // perform the fast part of the checking logic |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
622
diff
changeset
|
1825 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, &done, stub->entry(), NULL); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
622
diff
changeset
|
1826 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1827 __ push(klass_RInfo); |
1828 __ push(k_RInfo); | |
0 | 1829 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1830 __ pop(klass_RInfo); |
1831 __ pop(k_RInfo); | |
1832 // result is a boolean | |
0 | 1833 __ cmpl(k_RInfo, 0); |
1834 __ jcc(Assembler::equal, *stub->entry()); | |
1835 __ bind(done); | |
1836 } else if (code == lir_instanceof) { | |
1837 Register obj = op->object()->as_register(); | |
1838 Register k_RInfo = op->tmp1()->as_register(); | |
1839 Register klass_RInfo = op->tmp2()->as_register(); | |
1840 Register dst = op->result_opr()->as_register(); | |
1841 ciKlass* k = op->klass(); | |
1842 | |
1843 Label done; | |
1844 Label zero; | |
1845 Label one; | |
1846 if (obj == k_RInfo) { | |
1847 k_RInfo = klass_RInfo; | |
1848 klass_RInfo = obj; | |
1849 } | |
1850 // patching may screw with our temporaries on sparc, | |
1851 // so let's do it before loading the class | |
1852 if (!k->is_loaded()) { | |
1853 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); | |
304 | 1854 } else { |
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1855 LP64_ONLY(__ movoop(k_RInfo, k->constant_encoding())); |
0 | 1856 } |
1857 assert(obj != k_RInfo, "must be different"); | |
1858 | |
1859 __ verify_oop(obj); | |
1860 if (op->fast_check()) { | |
304 | 1861 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1862 __ jcc(Assembler::equal, zero); |
1863 // get object class | |
1864 // not a safepoint as obj null check happens earlier | |
304 | 1865 if (LP64_ONLY(false &&) k->is_loaded()) { |
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1866 NOT_LP64(__ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding())); |
0 | 1867 k_RInfo = noreg; |
1868 } else { | |
304 | 1869 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
0 | 1870 |
1871 } | |
1872 __ jcc(Assembler::equal, one); | |
1873 } else { | |
1874 // get object class | |
1875 // not a safepoint as obj null check happens earlier | |
304 | 1876 __ cmpptr(obj, (int32_t)NULL_WORD); |
0 | 1877 __ jcc(Assembler::equal, zero); |
304 | 1878 __ movptr(klass_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
1879 | |
1880 #ifndef _LP64 | |
0 | 1881 if (k->is_loaded()) { |
1882 // See if we get an immediate positive hit | |
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1883 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
0 | 1884 __ jcc(Assembler::equal, one); |
1885 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() == k->super_check_offset()) { | |
1886 // check for self | |
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1887 __ cmpoop(klass_RInfo, k->constant_encoding()); |
0 | 1888 __ jcc(Assembler::equal, one); |
304 | 1889 __ push(klass_RInfo); |
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1890 __ pushoop(k->constant_encoding()); |
0 | 1891 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1892 __ pop(klass_RInfo); |
1893 __ pop(dst); | |
0 | 1894 __ jmp(done); |
1895 } | |
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1896 } |
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1897 else // next block is unconditional if LP64: |
304 | 1898 #endif // LP64 |
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1899 { |
0 | 1900 assert(dst != klass_RInfo && dst != k_RInfo, "need 3 registers"); |
1901 | |
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1902 // perform the fast part of the checking logic |
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1903 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, dst, &one, &zero, NULL); |
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1904 // call out-of-line instance of __ check_klass_subtype_slow_path(...): |
304 | 1905 __ push(klass_RInfo); |
1906 __ push(k_RInfo); | |
0 | 1907 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
304 | 1908 __ pop(klass_RInfo); |
1909 __ pop(dst); | |
0 | 1910 __ jmp(done); |
1911 } | |
1912 } | |
1913 __ bind(zero); | |
304 | 1914 __ xorptr(dst, dst); |
0 | 1915 __ jmp(done); |
1916 __ bind(one); | |
304 | 1917 __ movptr(dst, 1); |
0 | 1918 __ bind(done); |
1919 } else { | |
1920 ShouldNotReachHere(); | |
1921 } | |
1922 | |
1923 } | |
1924 | |
1925 | |
1926 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { | |
304 | 1927 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { |
0 | 1928 assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); |
1929 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); | |
1930 assert(op->new_value()->as_register_lo() == rbx, "wrong register"); | |
1931 assert(op->new_value()->as_register_hi() == rcx, "wrong register"); | |
1932 Register addr = op->addr()->as_register(); | |
1933 if (os::is_MP()) { | |
1934 __ lock(); | |
1935 } | |
304 | 1936 NOT_LP64(__ cmpxchg8(Address(addr, 0))); |
1937 | |
1938 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { | |
1939 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) | |
1940 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
0 | 1941 Register newval = op->new_value()->as_register(); |
1942 Register cmpval = op->cmp_value()->as_register(); | |
1943 assert(cmpval == rax, "wrong register"); | |
1944 assert(newval != NULL, "new val must be register"); | |
1945 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1946 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1947 assert(newval != addr, "new value and addr must be in different registers"); | |
1948 if (os::is_MP()) { | |
1949 __ lock(); | |
1950 } | |
304 | 1951 if ( op->code() == lir_cas_obj) { |
1952 __ cmpxchgptr(newval, Address(addr, 0)); | |
1953 } else if (op->code() == lir_cas_int) { | |
1954 __ cmpxchgl(newval, Address(addr, 0)); | |
1955 } else { | |
1956 LP64_ONLY(__ cmpxchgq(newval, Address(addr, 0))); | |
1957 } | |
1958 #ifdef _LP64 | |
1959 } else if (op->code() == lir_cas_long) { | |
1960 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); | |
1961 Register newval = op->new_value()->as_register_lo(); | |
1962 Register cmpval = op->cmp_value()->as_register_lo(); | |
1963 assert(cmpval == rax, "wrong register"); | |
1964 assert(newval != NULL, "new val must be register"); | |
1965 assert(cmpval != newval, "cmp and new values must be in different registers"); | |
1966 assert(cmpval != addr, "cmp and addr must be in different registers"); | |
1967 assert(newval != addr, "new value and addr must be in different registers"); | |
1968 if (os::is_MP()) { | |
1969 __ lock(); | |
1970 } | |
1971 __ cmpxchgq(newval, Address(addr, 0)); | |
1972 #endif // _LP64 | |
0 | 1973 } else { |
1974 Unimplemented(); | |
1975 } | |
1976 } | |
1977 | |
1978 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { | |
1979 Assembler::Condition acond, ncond; | |
1980 switch (condition) { | |
1981 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; | |
1982 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; | |
1983 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; | |
1984 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; | |
1985 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; | |
1986 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; | |
1987 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; | |
1988 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; | |
1989 default: ShouldNotReachHere(); | |
1990 } | |
1991 | |
1992 if (opr1->is_cpu_register()) { | |
1993 reg2reg(opr1, result); | |
1994 } else if (opr1->is_stack()) { | |
1995 stack2reg(opr1, result, result->type()); | |
1996 } else if (opr1->is_constant()) { | |
1997 const2reg(opr1, result, lir_patch_none, NULL); | |
1998 } else { | |
1999 ShouldNotReachHere(); | |
2000 } | |
2001 | |
2002 if (VM_Version::supports_cmov() && !opr2->is_constant()) { | |
2003 // optimized version that does not require a branch | |
2004 if (opr2->is_single_cpu()) { | |
2005 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); | |
304 | 2006 __ cmov(ncond, result->as_register(), opr2->as_register()); |
0 | 2007 } else if (opr2->is_double_cpu()) { |
2008 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
2009 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); | |
304 | 2010 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); |
2011 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) | |
0 | 2012 } else if (opr2->is_single_stack()) { |
2013 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2014 } else if (opr2->is_double_stack()) { | |
304 | 2015 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); |
2016 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) | |
0 | 2017 } else { |
2018 ShouldNotReachHere(); | |
2019 } | |
2020 | |
2021 } else { | |
2022 Label skip; | |
2023 __ jcc (acond, skip); | |
2024 if (opr2->is_cpu_register()) { | |
2025 reg2reg(opr2, result); | |
2026 } else if (opr2->is_stack()) { | |
2027 stack2reg(opr2, result, result->type()); | |
2028 } else if (opr2->is_constant()) { | |
2029 const2reg(opr2, result, lir_patch_none, NULL); | |
2030 } else { | |
2031 ShouldNotReachHere(); | |
2032 } | |
2033 __ bind(skip); | |
2034 } | |
2035 } | |
2036 | |
2037 | |
2038 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { | |
2039 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); | |
2040 | |
2041 if (left->is_single_cpu()) { | |
2042 assert(left == dest, "left and dest must be equal"); | |
2043 Register lreg = left->as_register(); | |
2044 | |
2045 if (right->is_single_cpu()) { | |
2046 // cpu register - cpu register | |
2047 Register rreg = right->as_register(); | |
2048 switch (code) { | |
2049 case lir_add: __ addl (lreg, rreg); break; | |
2050 case lir_sub: __ subl (lreg, rreg); break; | |
2051 case lir_mul: __ imull(lreg, rreg); break; | |
2052 default: ShouldNotReachHere(); | |
2053 } | |
2054 | |
2055 } else if (right->is_stack()) { | |
2056 // cpu register - stack | |
2057 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2058 switch (code) { | |
2059 case lir_add: __ addl(lreg, raddr); break; | |
2060 case lir_sub: __ subl(lreg, raddr); break; | |
2061 default: ShouldNotReachHere(); | |
2062 } | |
2063 | |
2064 } else if (right->is_constant()) { | |
2065 // cpu register - constant | |
2066 jint c = right->as_constant_ptr()->as_jint(); | |
2067 switch (code) { | |
2068 case lir_add: { | |
2069 __ increment(lreg, c); | |
2070 break; | |
2071 } | |
2072 case lir_sub: { | |
2073 __ decrement(lreg, c); | |
2074 break; | |
2075 } | |
2076 default: ShouldNotReachHere(); | |
2077 } | |
2078 | |
2079 } else { | |
2080 ShouldNotReachHere(); | |
2081 } | |
2082 | |
2083 } else if (left->is_double_cpu()) { | |
2084 assert(left == dest, "left and dest must be equal"); | |
2085 Register lreg_lo = left->as_register_lo(); | |
2086 Register lreg_hi = left->as_register_hi(); | |
2087 | |
2088 if (right->is_double_cpu()) { | |
2089 // cpu register - cpu register | |
2090 Register rreg_lo = right->as_register_lo(); | |
2091 Register rreg_hi = right->as_register_hi(); | |
304 | 2092 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); |
2093 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); | |
0 | 2094 switch (code) { |
2095 case lir_add: | |
304 | 2096 __ addptr(lreg_lo, rreg_lo); |
2097 NOT_LP64(__ adcl(lreg_hi, rreg_hi)); | |
0 | 2098 break; |
2099 case lir_sub: | |
304 | 2100 __ subptr(lreg_lo, rreg_lo); |
2101 NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); | |
0 | 2102 break; |
2103 case lir_mul: | |
304 | 2104 #ifdef _LP64 |
2105 __ imulq(lreg_lo, rreg_lo); | |
2106 #else | |
0 | 2107 assert(lreg_lo == rax && lreg_hi == rdx, "must be"); |
2108 __ imull(lreg_hi, rreg_lo); | |
2109 __ imull(rreg_hi, lreg_lo); | |
2110 __ addl (rreg_hi, lreg_hi); | |
2111 __ mull (rreg_lo); | |
2112 __ addl (lreg_hi, rreg_hi); | |
304 | 2113 #endif // _LP64 |
0 | 2114 break; |
2115 default: | |
2116 ShouldNotReachHere(); | |
2117 } | |
2118 | |
2119 } else if (right->is_constant()) { | |
2120 // cpu register - constant | |
304 | 2121 #ifdef _LP64 |
2122 jlong c = right->as_constant_ptr()->as_jlong_bits(); | |
2123 __ movptr(r10, (intptr_t) c); | |
2124 switch (code) { | |
2125 case lir_add: | |
2126 __ addptr(lreg_lo, r10); | |
2127 break; | |
2128 case lir_sub: | |
2129 __ subptr(lreg_lo, r10); | |
2130 break; | |
2131 default: | |
2132 ShouldNotReachHere(); | |
2133 } | |
2134 #else | |
0 | 2135 jint c_lo = right->as_constant_ptr()->as_jint_lo(); |
2136 jint c_hi = right->as_constant_ptr()->as_jint_hi(); | |
2137 switch (code) { | |
2138 case lir_add: | |
304 | 2139 __ addptr(lreg_lo, c_lo); |
0 | 2140 __ adcl(lreg_hi, c_hi); |
2141 break; | |
2142 case lir_sub: | |
304 | 2143 __ subptr(lreg_lo, c_lo); |
0 | 2144 __ sbbl(lreg_hi, c_hi); |
2145 break; | |
2146 default: | |
2147 ShouldNotReachHere(); | |
2148 } | |
304 | 2149 #endif // _LP64 |
0 | 2150 |
2151 } else { | |
2152 ShouldNotReachHere(); | |
2153 } | |
2154 | |
2155 } else if (left->is_single_xmm()) { | |
2156 assert(left == dest, "left and dest must be equal"); | |
2157 XMMRegister lreg = left->as_xmm_float_reg(); | |
2158 | |
2159 if (right->is_single_xmm()) { | |
2160 XMMRegister rreg = right->as_xmm_float_reg(); | |
2161 switch (code) { | |
2162 case lir_add: __ addss(lreg, rreg); break; | |
2163 case lir_sub: __ subss(lreg, rreg); break; | |
2164 case lir_mul_strictfp: // fall through | |
2165 case lir_mul: __ mulss(lreg, rreg); break; | |
2166 case lir_div_strictfp: // fall through | |
2167 case lir_div: __ divss(lreg, rreg); break; | |
2168 default: ShouldNotReachHere(); | |
2169 } | |
2170 } else { | |
2171 Address raddr; | |
2172 if (right->is_single_stack()) { | |
2173 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2174 } else if (right->is_constant()) { | |
2175 // hack for now | |
2176 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); | |
2177 } else { | |
2178 ShouldNotReachHere(); | |
2179 } | |
2180 switch (code) { | |
2181 case lir_add: __ addss(lreg, raddr); break; | |
2182 case lir_sub: __ subss(lreg, raddr); break; | |
2183 case lir_mul_strictfp: // fall through | |
2184 case lir_mul: __ mulss(lreg, raddr); break; | |
2185 case lir_div_strictfp: // fall through | |
2186 case lir_div: __ divss(lreg, raddr); break; | |
2187 default: ShouldNotReachHere(); | |
2188 } | |
2189 } | |
2190 | |
2191 } else if (left->is_double_xmm()) { | |
2192 assert(left == dest, "left and dest must be equal"); | |
2193 | |
2194 XMMRegister lreg = left->as_xmm_double_reg(); | |
2195 if (right->is_double_xmm()) { | |
2196 XMMRegister rreg = right->as_xmm_double_reg(); | |
2197 switch (code) { | |
2198 case lir_add: __ addsd(lreg, rreg); break; | |
2199 case lir_sub: __ subsd(lreg, rreg); break; | |
2200 case lir_mul_strictfp: // fall through | |
2201 case lir_mul: __ mulsd(lreg, rreg); break; | |
2202 case lir_div_strictfp: // fall through | |
2203 case lir_div: __ divsd(lreg, rreg); break; | |
2204 default: ShouldNotReachHere(); | |
2205 } | |
2206 } else { | |
2207 Address raddr; | |
2208 if (right->is_double_stack()) { | |
2209 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2210 } else if (right->is_constant()) { | |
2211 // hack for now | |
2212 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2213 } else { | |
2214 ShouldNotReachHere(); | |
2215 } | |
2216 switch (code) { | |
2217 case lir_add: __ addsd(lreg, raddr); break; | |
2218 case lir_sub: __ subsd(lreg, raddr); break; | |
2219 case lir_mul_strictfp: // fall through | |
2220 case lir_mul: __ mulsd(lreg, raddr); break; | |
2221 case lir_div_strictfp: // fall through | |
2222 case lir_div: __ divsd(lreg, raddr); break; | |
2223 default: ShouldNotReachHere(); | |
2224 } | |
2225 } | |
2226 | |
2227 } else if (left->is_single_fpu()) { | |
2228 assert(dest->is_single_fpu(), "fpu stack allocation required"); | |
2229 | |
2230 if (right->is_single_fpu()) { | |
2231 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); | |
2232 | |
2233 } else { | |
2234 assert(left->fpu_regnr() == 0, "left must be on TOS"); | |
2235 assert(dest->fpu_regnr() == 0, "dest must be on TOS"); | |
2236 | |
2237 Address raddr; | |
2238 if (right->is_single_stack()) { | |
2239 raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2240 } else if (right->is_constant()) { | |
2241 address const_addr = float_constant(right->as_jfloat()); | |
2242 assert(const_addr != NULL, "incorrect float/double constant maintainance"); | |
2243 // hack for now | |
2244 raddr = __ as_Address(InternalAddress(const_addr)); | |
2245 } else { | |
2246 ShouldNotReachHere(); | |
2247 } | |
2248 | |
2249 switch (code) { | |
2250 case lir_add: __ fadd_s(raddr); break; | |
2251 case lir_sub: __ fsub_s(raddr); break; | |
2252 case lir_mul_strictfp: // fall through | |
2253 case lir_mul: __ fmul_s(raddr); break; | |
2254 case lir_div_strictfp: // fall through | |
2255 case lir_div: __ fdiv_s(raddr); break; | |
2256 default: ShouldNotReachHere(); | |
2257 } | |
2258 } | |
2259 | |
2260 } else if (left->is_double_fpu()) { | |
2261 assert(dest->is_double_fpu(), "fpu stack allocation required"); | |
2262 | |
2263 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2264 // Double values require special handling for strictfp mul/div on x86 | |
2265 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
2266 __ fmulp(left->fpu_regnrLo() + 1); | |
2267 } | |
2268 | |
2269 if (right->is_double_fpu()) { | |
2270 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); | |
2271 | |
2272 } else { | |
2273 assert(left->fpu_regnrLo() == 0, "left must be on TOS"); | |
2274 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); | |
2275 | |
2276 Address raddr; | |
2277 if (right->is_double_stack()) { | |
2278 raddr = frame_map()->address_for_slot(right->double_stack_ix()); | |
2279 } else if (right->is_constant()) { | |
2280 // hack for now | |
2281 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); | |
2282 } else { | |
2283 ShouldNotReachHere(); | |
2284 } | |
2285 | |
2286 switch (code) { | |
2287 case lir_add: __ fadd_d(raddr); break; | |
2288 case lir_sub: __ fsub_d(raddr); break; | |
2289 case lir_mul_strictfp: // fall through | |
2290 case lir_mul: __ fmul_d(raddr); break; | |
2291 case lir_div_strictfp: // fall through | |
2292 case lir_div: __ fdiv_d(raddr); break; | |
2293 default: ShouldNotReachHere(); | |
2294 } | |
2295 } | |
2296 | |
2297 if (code == lir_mul_strictfp || code == lir_div_strictfp) { | |
2298 // Double values require special handling for strictfp mul/div on x86 | |
2299 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
2300 __ fmulp(dest->fpu_regnrLo() + 1); | |
2301 } | |
2302 | |
2303 } else if (left->is_single_stack() || left->is_address()) { | |
2304 assert(left == dest, "left and dest must be equal"); | |
2305 | |
2306 Address laddr; | |
2307 if (left->is_single_stack()) { | |
2308 laddr = frame_map()->address_for_slot(left->single_stack_ix()); | |
2309 } else if (left->is_address()) { | |
2310 laddr = as_Address(left->as_address_ptr()); | |
2311 } else { | |
2312 ShouldNotReachHere(); | |
2313 } | |
2314 | |
2315 if (right->is_single_cpu()) { | |
2316 Register rreg = right->as_register(); | |
2317 switch (code) { | |
2318 case lir_add: __ addl(laddr, rreg); break; | |
2319 case lir_sub: __ subl(laddr, rreg); break; | |
2320 default: ShouldNotReachHere(); | |
2321 } | |
2322 } else if (right->is_constant()) { | |
2323 jint c = right->as_constant_ptr()->as_jint(); | |
2324 switch (code) { | |
2325 case lir_add: { | |
304 | 2326 __ incrementl(laddr, c); |
0 | 2327 break; |
2328 } | |
2329 case lir_sub: { | |
304 | 2330 __ decrementl(laddr, c); |
0 | 2331 break; |
2332 } | |
2333 default: ShouldNotReachHere(); | |
2334 } | |
2335 } else { | |
2336 ShouldNotReachHere(); | |
2337 } | |
2338 | |
2339 } else { | |
2340 ShouldNotReachHere(); | |
2341 } | |
2342 } | |
2343 | |
2344 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { | |
2345 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); | |
2346 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); | |
2347 assert(left_index == 0 || right_index == 0, "either must be on top of stack"); | |
2348 | |
2349 bool left_is_tos = (left_index == 0); | |
2350 bool dest_is_tos = (dest_index == 0); | |
2351 int non_tos_index = (left_is_tos ? right_index : left_index); | |
2352 | |
2353 switch (code) { | |
2354 case lir_add: | |
2355 if (pop_fpu_stack) __ faddp(non_tos_index); | |
2356 else if (dest_is_tos) __ fadd (non_tos_index); | |
2357 else __ fadda(non_tos_index); | |
2358 break; | |
2359 | |
2360 case lir_sub: | |
2361 if (left_is_tos) { | |
2362 if (pop_fpu_stack) __ fsubrp(non_tos_index); | |
2363 else if (dest_is_tos) __ fsub (non_tos_index); | |
2364 else __ fsubra(non_tos_index); | |
2365 } else { | |
2366 if (pop_fpu_stack) __ fsubp (non_tos_index); | |
2367 else if (dest_is_tos) __ fsubr (non_tos_index); | |
2368 else __ fsuba (non_tos_index); | |
2369 } | |
2370 break; | |
2371 | |
2372 case lir_mul_strictfp: // fall through | |
2373 case lir_mul: | |
2374 if (pop_fpu_stack) __ fmulp(non_tos_index); | |
2375 else if (dest_is_tos) __ fmul (non_tos_index); | |
2376 else __ fmula(non_tos_index); | |
2377 break; | |
2378 | |
2379 case lir_div_strictfp: // fall through | |
2380 case lir_div: | |
2381 if (left_is_tos) { | |
2382 if (pop_fpu_stack) __ fdivrp(non_tos_index); | |
2383 else if (dest_is_tos) __ fdiv (non_tos_index); | |
2384 else __ fdivra(non_tos_index); | |
2385 } else { | |
2386 if (pop_fpu_stack) __ fdivp (non_tos_index); | |
2387 else if (dest_is_tos) __ fdivr (non_tos_index); | |
2388 else __ fdiva (non_tos_index); | |
2389 } | |
2390 break; | |
2391 | |
2392 case lir_rem: | |
2393 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); | |
2394 __ fremr(noreg); | |
2395 break; | |
2396 | |
2397 default: | |
2398 ShouldNotReachHere(); | |
2399 } | |
2400 } | |
2401 | |
2402 | |
2403 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { | |
2404 if (value->is_double_xmm()) { | |
2405 switch(code) { | |
2406 case lir_abs : | |
2407 { | |
2408 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { | |
2409 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); | |
2410 } | |
2411 __ andpd(dest->as_xmm_double_reg(), | |
2412 ExternalAddress((address)double_signmask_pool)); | |
2413 } | |
2414 break; | |
2415 | |
2416 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; | |
2417 // all other intrinsics are not available in the SSE instruction set, so FPU is used | |
2418 default : ShouldNotReachHere(); | |
2419 } | |
2420 | |
2421 } else if (value->is_double_fpu()) { | |
2422 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); | |
2423 switch(code) { | |
2424 case lir_log : __ flog() ; break; | |
2425 case lir_log10 : __ flog10() ; break; | |
2426 case lir_abs : __ fabs() ; break; | |
2427 case lir_sqrt : __ fsqrt(); break; | |
2428 case lir_sin : | |
2429 // Should consider not saving rbx, if not necessary | |
2430 __ trigfunc('s', op->as_Op2()->fpu_stack_size()); | |
2431 break; | |
2432 case lir_cos : | |
2433 // Should consider not saving rbx, if not necessary | |
2434 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); | |
2435 __ trigfunc('c', op->as_Op2()->fpu_stack_size()); | |
2436 break; | |
2437 case lir_tan : | |
2438 // Should consider not saving rbx, if not necessary | |
2439 __ trigfunc('t', op->as_Op2()->fpu_stack_size()); | |
2440 break; | |
2441 default : ShouldNotReachHere(); | |
2442 } | |
2443 } else { | |
2444 Unimplemented(); | |
2445 } | |
2446 } | |
2447 | |
2448 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { | |
2449 // assert(left->destroys_register(), "check"); | |
2450 if (left->is_single_cpu()) { | |
2451 Register reg = left->as_register(); | |
2452 if (right->is_constant()) { | |
2453 int val = right->as_constant_ptr()->as_jint(); | |
2454 switch (code) { | |
2455 case lir_logic_and: __ andl (reg, val); break; | |
2456 case lir_logic_or: __ orl (reg, val); break; | |
2457 case lir_logic_xor: __ xorl (reg, val); break; | |
2458 default: ShouldNotReachHere(); | |
2459 } | |
2460 } else if (right->is_stack()) { | |
2461 // added support for stack operands | |
2462 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); | |
2463 switch (code) { | |
2464 case lir_logic_and: __ andl (reg, raddr); break; | |
2465 case lir_logic_or: __ orl (reg, raddr); break; | |
2466 case lir_logic_xor: __ xorl (reg, raddr); break; | |
2467 default: ShouldNotReachHere(); | |
2468 } | |
2469 } else { | |
2470 Register rright = right->as_register(); | |
2471 switch (code) { | |
304 | 2472 case lir_logic_and: __ andptr (reg, rright); break; |
2473 case lir_logic_or : __ orptr (reg, rright); break; | |
2474 case lir_logic_xor: __ xorptr (reg, rright); break; | |
0 | 2475 default: ShouldNotReachHere(); |
2476 } | |
2477 } | |
2478 move_regs(reg, dst->as_register()); | |
2479 } else { | |
2480 Register l_lo = left->as_register_lo(); | |
2481 Register l_hi = left->as_register_hi(); | |
2482 if (right->is_constant()) { | |
304 | 2483 #ifdef _LP64 |
2484 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); | |
2485 switch (code) { | |
2486 case lir_logic_and: | |
2487 __ andq(l_lo, rscratch1); | |
2488 break; | |
2489 case lir_logic_or: | |
2490 __ orq(l_lo, rscratch1); | |
2491 break; | |
2492 case lir_logic_xor: | |
2493 __ xorq(l_lo, rscratch1); | |
2494 break; | |
2495 default: ShouldNotReachHere(); | |
2496 } | |
2497 #else | |
0 | 2498 int r_lo = right->as_constant_ptr()->as_jint_lo(); |
2499 int r_hi = right->as_constant_ptr()->as_jint_hi(); | |
2500 switch (code) { | |
2501 case lir_logic_and: | |
2502 __ andl(l_lo, r_lo); | |
2503 __ andl(l_hi, r_hi); | |
2504 break; | |
2505 case lir_logic_or: | |
2506 __ orl(l_lo, r_lo); | |
2507 __ orl(l_hi, r_hi); | |
2508 break; | |
2509 case lir_logic_xor: | |
2510 __ xorl(l_lo, r_lo); | |
2511 __ xorl(l_hi, r_hi); | |
2512 break; | |
2513 default: ShouldNotReachHere(); | |
2514 } | |
304 | 2515 #endif // _LP64 |
0 | 2516 } else { |
1572 | 2517 #ifdef _LP64 |
2518 Register r_lo; | |
2519 if (right->type() == T_OBJECT || right->type() == T_ARRAY) { | |
2520 r_lo = right->as_register(); | |
2521 } else { | |
2522 r_lo = right->as_register_lo(); | |
2523 } | |
2524 #else | |
0 | 2525 Register r_lo = right->as_register_lo(); |
2526 Register r_hi = right->as_register_hi(); | |
2527 assert(l_lo != r_hi, "overwriting registers"); | |
1572 | 2528 #endif |
0 | 2529 switch (code) { |
2530 case lir_logic_and: | |
304 | 2531 __ andptr(l_lo, r_lo); |
2532 NOT_LP64(__ andptr(l_hi, r_hi);) | |
0 | 2533 break; |
2534 case lir_logic_or: | |
304 | 2535 __ orptr(l_lo, r_lo); |
2536 NOT_LP64(__ orptr(l_hi, r_hi);) | |
0 | 2537 break; |
2538 case lir_logic_xor: | |
304 | 2539 __ xorptr(l_lo, r_lo); |
2540 NOT_LP64(__ xorptr(l_hi, r_hi);) | |
0 | 2541 break; |
2542 default: ShouldNotReachHere(); | |
2543 } | |
2544 } | |
2545 | |
2546 Register dst_lo = dst->as_register_lo(); | |
2547 Register dst_hi = dst->as_register_hi(); | |
2548 | |
304 | 2549 #ifdef _LP64 |
2550 move_regs(l_lo, dst_lo); | |
2551 #else | |
0 | 2552 if (dst_lo == l_hi) { |
2553 assert(dst_hi != l_lo, "overwriting registers"); | |
2554 move_regs(l_hi, dst_hi); | |
2555 move_regs(l_lo, dst_lo); | |
2556 } else { | |
2557 assert(dst_lo != l_hi, "overwriting registers"); | |
2558 move_regs(l_lo, dst_lo); | |
2559 move_regs(l_hi, dst_hi); | |
2560 } | |
304 | 2561 #endif // _LP64 |
0 | 2562 } |
2563 } | |
2564 | |
2565 | |
2566 // we assume that rax, and rdx can be overwritten | |
2567 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { | |
2568 | |
2569 assert(left->is_single_cpu(), "left must be register"); | |
2570 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); | |
2571 assert(result->is_single_cpu(), "result must be register"); | |
2572 | |
2573 // assert(left->destroys_register(), "check"); | |
2574 // assert(right->destroys_register(), "check"); | |
2575 | |
2576 Register lreg = left->as_register(); | |
2577 Register dreg = result->as_register(); | |
2578 | |
2579 if (right->is_constant()) { | |
2580 int divisor = right->as_constant_ptr()->as_jint(); | |
2581 assert(divisor > 0 && is_power_of_2(divisor), "must be"); | |
2582 if (code == lir_idiv) { | |
2583 assert(lreg == rax, "must be rax,"); | |
2584 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2585 __ cdql(); // sign extend into rdx:rax | |
2586 if (divisor == 2) { | |
2587 __ subl(lreg, rdx); | |
2588 } else { | |
2589 __ andl(rdx, divisor - 1); | |
2590 __ addl(lreg, rdx); | |
2591 } | |
2592 __ sarl(lreg, log2_intptr(divisor)); | |
2593 move_regs(lreg, dreg); | |
2594 } else if (code == lir_irem) { | |
2595 Label done; | |
304 | 2596 __ mov(dreg, lreg); |
0 | 2597 __ andl(dreg, 0x80000000 | (divisor - 1)); |
2598 __ jcc(Assembler::positive, done); | |
2599 __ decrement(dreg); | |
2600 __ orl(dreg, ~(divisor - 1)); | |
2601 __ increment(dreg); | |
2602 __ bind(done); | |
2603 } else { | |
2604 ShouldNotReachHere(); | |
2605 } | |
2606 } else { | |
2607 Register rreg = right->as_register(); | |
2608 assert(lreg == rax, "left register must be rax,"); | |
2609 assert(rreg != rdx, "right register must not be rdx"); | |
2610 assert(temp->as_register() == rdx, "tmp register must be rdx"); | |
2611 | |
2612 move_regs(lreg, rax); | |
2613 | |
2614 int idivl_offset = __ corrected_idivl(rreg); | |
2615 add_debug_info_for_div0(idivl_offset, info); | |
2616 if (code == lir_irem) { | |
2617 move_regs(rdx, dreg); // result is in rdx | |
2618 } else { | |
2619 move_regs(rax, dreg); | |
2620 } | |
2621 } | |
2622 } | |
2623 | |
2624 | |
2625 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { | |
2626 if (opr1->is_single_cpu()) { | |
2627 Register reg1 = opr1->as_register(); | |
2628 if (opr2->is_single_cpu()) { | |
2629 // cpu register - cpu register | |
304 | 2630 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2631 __ cmpptr(reg1, opr2->as_register()); | |
2632 } else { | |
2633 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); | |
2634 __ cmpl(reg1, opr2->as_register()); | |
2635 } | |
0 | 2636 } else if (opr2->is_stack()) { |
2637 // cpu register - stack | |
304 | 2638 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { |
2639 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2640 } else { | |
2641 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2642 } | |
0 | 2643 } else if (opr2->is_constant()) { |
2644 // cpu register - constant | |
2645 LIR_Const* c = opr2->as_constant_ptr(); | |
2646 if (c->type() == T_INT) { | |
2647 __ cmpl(reg1, c->as_jint()); | |
304 | 2648 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2649 // In 64bit oops are single register | |
0 | 2650 jobject o = c->as_jobject(); |
2651 if (o == NULL) { | |
304 | 2652 __ cmpptr(reg1, (int32_t)NULL_WORD); |
0 | 2653 } else { |
304 | 2654 #ifdef _LP64 |
2655 __ movoop(rscratch1, o); | |
2656 __ cmpptr(reg1, rscratch1); | |
2657 #else | |
0 | 2658 __ cmpoop(reg1, c->as_jobject()); |
304 | 2659 #endif // _LP64 |
0 | 2660 } |
2661 } else { | |
2662 ShouldNotReachHere(); | |
2663 } | |
2664 // cpu register - address | |
2665 } else if (opr2->is_address()) { | |
2666 if (op->info() != NULL) { | |
2667 add_debug_info_for_null_check_here(op->info()); | |
2668 } | |
2669 __ cmpl(reg1, as_Address(opr2->as_address_ptr())); | |
2670 } else { | |
2671 ShouldNotReachHere(); | |
2672 } | |
2673 | |
2674 } else if(opr1->is_double_cpu()) { | |
2675 Register xlo = opr1->as_register_lo(); | |
2676 Register xhi = opr1->as_register_hi(); | |
2677 if (opr2->is_double_cpu()) { | |
304 | 2678 #ifdef _LP64 |
2679 __ cmpptr(xlo, opr2->as_register_lo()); | |
2680 #else | |
0 | 2681 // cpu register - cpu register |
2682 Register ylo = opr2->as_register_lo(); | |
2683 Register yhi = opr2->as_register_hi(); | |
2684 __ subl(xlo, ylo); | |
2685 __ sbbl(xhi, yhi); | |
2686 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { | |
2687 __ orl(xhi, xlo); | |
2688 } | |
304 | 2689 #endif // _LP64 |
0 | 2690 } else if (opr2->is_constant()) { |
2691 // cpu register - constant 0 | |
2692 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); | |
304 | 2693 #ifdef _LP64 |
2694 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); | |
2695 #else | |
0 | 2696 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); |
2697 __ orl(xhi, xlo); | |
304 | 2698 #endif // _LP64 |
0 | 2699 } else { |
2700 ShouldNotReachHere(); | |
2701 } | |
2702 | |
2703 } else if (opr1->is_single_xmm()) { | |
2704 XMMRegister reg1 = opr1->as_xmm_float_reg(); | |
2705 if (opr2->is_single_xmm()) { | |
2706 // xmm register - xmm register | |
2707 __ ucomiss(reg1, opr2->as_xmm_float_reg()); | |
2708 } else if (opr2->is_stack()) { | |
2709 // xmm register - stack | |
2710 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); | |
2711 } else if (opr2->is_constant()) { | |
2712 // xmm register - constant | |
2713 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); | |
2714 } else if (opr2->is_address()) { | |
2715 // xmm register - address | |
2716 if (op->info() != NULL) { | |
2717 add_debug_info_for_null_check_here(op->info()); | |
2718 } | |
2719 __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); | |
2720 } else { | |
2721 ShouldNotReachHere(); | |
2722 } | |
2723 | |
2724 } else if (opr1->is_double_xmm()) { | |
2725 XMMRegister reg1 = opr1->as_xmm_double_reg(); | |
2726 if (opr2->is_double_xmm()) { | |
2727 // xmm register - xmm register | |
2728 __ ucomisd(reg1, opr2->as_xmm_double_reg()); | |
2729 } else if (opr2->is_stack()) { | |
2730 // xmm register - stack | |
2731 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); | |
2732 } else if (opr2->is_constant()) { | |
2733 // xmm register - constant | |
2734 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); | |
2735 } else if (opr2->is_address()) { | |
2736 // xmm register - address | |
2737 if (op->info() != NULL) { | |
2738 add_debug_info_for_null_check_here(op->info()); | |
2739 } | |
2740 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); | |
2741 } else { | |
2742 ShouldNotReachHere(); | |
2743 } | |
2744 | |
2745 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { | |
2746 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); | |
2747 assert(opr2->is_fpu_register(), "both must be registers"); | |
2748 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2749 | |
2750 } else if (opr1->is_address() && opr2->is_constant()) { | |
304 | 2751 LIR_Const* c = opr2->as_constant_ptr(); |
2752 #ifdef _LP64 | |
2753 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { | |
2754 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); | |
2755 __ movoop(rscratch1, c->as_jobject()); | |
2756 } | |
2757 #endif // LP64 | |
0 | 2758 if (op->info() != NULL) { |
2759 add_debug_info_for_null_check_here(op->info()); | |
2760 } | |
2761 // special case: address - constant | |
2762 LIR_Address* addr = opr1->as_address_ptr(); | |
2763 if (c->type() == T_INT) { | |
2764 __ cmpl(as_Address(addr), c->as_jint()); | |
304 | 2765 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { |
2766 #ifdef _LP64 | |
2767 // %%% Make this explode if addr isn't reachable until we figure out a | |
2768 // better strategy by giving noreg as the temp for as_Address | |
2769 __ cmpptr(rscratch1, as_Address(addr, noreg)); | |
2770 #else | |
0 | 2771 __ cmpoop(as_Address(addr), c->as_jobject()); |
304 | 2772 #endif // _LP64 |
0 | 2773 } else { |
2774 ShouldNotReachHere(); | |
2775 } | |
2776 | |
2777 } else { | |
2778 ShouldNotReachHere(); | |
2779 } | |
2780 } | |
2781 | |
2782 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { | |
2783 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { | |
2784 if (left->is_single_xmm()) { | |
2785 assert(right->is_single_xmm(), "must match"); | |
2786 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2787 } else if (left->is_double_xmm()) { | |
2788 assert(right->is_double_xmm(), "must match"); | |
2789 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); | |
2790 | |
2791 } else { | |
2792 assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); | |
2793 assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); | |
2794 | |
2795 assert(left->fpu() == 0, "left must be on TOS"); | |
2796 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), | |
2797 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); | |
2798 } | |
2799 } else { | |
2800 assert(code == lir_cmp_l2i, "check"); | |
304 | 2801 #ifdef _LP64 |
1369 | 2802 Label done; |
2803 Register dest = dst->as_register(); | |
2804 __ cmpptr(left->as_register_lo(), right->as_register_lo()); | |
2805 __ movl(dest, -1); | |
2806 __ jccb(Assembler::less, done); | |
2807 __ set_byte_if_not_zero(dest); | |
2808 __ movzbl(dest, dest); | |
2809 __ bind(done); | |
304 | 2810 #else |
0 | 2811 __ lcmp2int(left->as_register_hi(), |
2812 left->as_register_lo(), | |
2813 right->as_register_hi(), | |
2814 right->as_register_lo()); | |
2815 move_regs(left->as_register_hi(), dst->as_register()); | |
304 | 2816 #endif // _LP64 |
0 | 2817 } |
2818 } | |
2819 | |
2820 | |
2821 void LIR_Assembler::align_call(LIR_Code code) { | |
2822 if (os::is_MP()) { | |
2823 // make sure that the displacement word of the call ends up word aligned | |
2824 int offset = __ offset(); | |
2825 switch (code) { | |
2826 case lir_static_call: | |
2827 case lir_optvirtual_call: | |
1295 | 2828 case lir_dynamic_call: |
0 | 2829 offset += NativeCall::displacement_offset; |
2830 break; | |
2831 case lir_icvirtual_call: | |
2832 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; | |
2833 break; | |
2834 case lir_virtual_call: // currently, sparc-specific for niagara | |
2835 default: ShouldNotReachHere(); | |
2836 } | |
2837 while (offset++ % BytesPerWord != 0) { | |
2838 __ nop(); | |
2839 } | |
2840 } | |
2841 } | |
2842 | |
2843 | |
1295 | 2844 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { |
0 | 2845 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, |
2846 "must be aligned"); | |
1295 | 2847 __ call(AddressLiteral(op->addr(), rtype)); |
1564 | 2848 add_call_info(code_offset(), op->info()); |
0 | 2849 } |
2850 | |
2851 | |
1295 | 2852 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { |
0 | 2853 RelocationHolder rh = virtual_call_Relocation::spec(pc()); |
2854 __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); | |
2855 assert(!os::is_MP() || | |
2856 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, | |
2857 "must be aligned"); | |
1295 | 2858 __ call(AddressLiteral(op->addr(), rh)); |
1564 | 2859 add_call_info(code_offset(), op->info()); |
0 | 2860 } |
2861 | |
2862 | |
2863 /* Currently, vtable-dispatch is only enabled for sparc platforms */ | |
1295 | 2864 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { |
0 | 2865 ShouldNotReachHere(); |
2866 } | |
2867 | |
1295 | 2868 |
0 | 2869 void LIR_Assembler::emit_static_call_stub() { |
2870 address call_pc = __ pc(); | |
2871 address stub = __ start_a_stub(call_stub_size); | |
2872 if (stub == NULL) { | |
2873 bailout("static call stub overflow"); | |
2874 return; | |
2875 } | |
2876 | |
2877 int start = __ offset(); | |
2878 if (os::is_MP()) { | |
2879 // make sure that the displacement word of the call ends up word aligned | |
2880 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; | |
2881 while (offset++ % BytesPerWord != 0) { | |
2882 __ nop(); | |
2883 } | |
2884 } | |
2885 __ relocate(static_stub_Relocation::spec(call_pc)); | |
2886 __ movoop(rbx, (jobject)NULL); | |
2887 // must be set to -1 at code generation time | |
2888 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); | |
304 | 2889 // On 64bit this will die since it will take a movq & jmp, must be only a jmp |
2890 __ jump(RuntimeAddress(__ pc())); | |
0 | 2891 |
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2892 assert(__ offset() - start <= call_stub_size, "stub too big"); |
0 | 2893 __ end_a_stub(); |
2894 } | |
2895 | |
2896 | |
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2897 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { |
0 | 2898 assert(exceptionOop->as_register() == rax, "must match"); |
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2899 assert(exceptionPC->as_register() == rdx, "must match"); |
0 | 2900 |
2901 // exception object is not added to oop map by LinearScan | |
2902 // (LinearScan assumes that no oops are in fixed registers) | |
2903 info->add_register_oop(exceptionOop); | |
2904 Runtime1::StubID unwind_id; | |
2905 | |
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2906 // get current pc information |
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2907 // pc is only needed if the method has an exception handler, the unwind code does not need it. |
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2908 int pc_for_athrow_offset = __ offset(); |
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2909 InternalAddress pc_for_athrow(__ pc()); |
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2910 __ lea(exceptionPC->as_register(), pc_for_athrow); |
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2911 add_call_info(pc_for_athrow_offset, info); // for exception handler |
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2912 |
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2913 __ verify_not_null_oop(rax); |
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2914 // search an exception handler (rax: exception oop, rdx: throwing pc) |
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2915 if (compilation()->has_fpu_code()) { |
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2916 unwind_id = Runtime1::handle_exception_id; |
0 | 2917 } else { |
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2918 unwind_id = Runtime1::handle_exception_nofpu_id; |
0 | 2919 } |
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2920 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); |
0 | 2921 |
2922 // enough room for two byte trap | |
2923 __ nop(); | |
2924 } | |
2925 | |
2926 | |
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2927 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { |
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2928 assert(exceptionOop->as_register() == rax, "must match"); |
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2929 |
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2930 __ jmp(_unwind_handler_entry); |
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2931 } |
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2932 |
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2933 |
0 | 2934 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { |
2935 | |
2936 // optimized version for linear scan: | |
2937 // * count must be already in ECX (guaranteed by LinearScan) | |
2938 // * left and dest must be equal | |
2939 // * tmp must be unused | |
2940 assert(count->as_register() == SHIFT_count, "count must be in ECX"); | |
2941 assert(left == dest, "left and dest must be equal"); | |
2942 assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); | |
2943 | |
2944 if (left->is_single_cpu()) { | |
2945 Register value = left->as_register(); | |
2946 assert(value != SHIFT_count, "left cannot be ECX"); | |
2947 | |
2948 switch (code) { | |
2949 case lir_shl: __ shll(value); break; | |
2950 case lir_shr: __ sarl(value); break; | |
2951 case lir_ushr: __ shrl(value); break; | |
2952 default: ShouldNotReachHere(); | |
2953 } | |
2954 } else if (left->is_double_cpu()) { | |
2955 Register lo = left->as_register_lo(); | |
2956 Register hi = left->as_register_hi(); | |
2957 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); | |
304 | 2958 #ifdef _LP64 |
2959 switch (code) { | |
2960 case lir_shl: __ shlptr(lo); break; | |
2961 case lir_shr: __ sarptr(lo); break; | |
2962 case lir_ushr: __ shrptr(lo); break; | |
2963 default: ShouldNotReachHere(); | |
2964 } | |
2965 #else | |
0 | 2966 |
2967 switch (code) { | |
2968 case lir_shl: __ lshl(hi, lo); break; | |
2969 case lir_shr: __ lshr(hi, lo, true); break; | |
2970 case lir_ushr: __ lshr(hi, lo, false); break; | |
2971 default: ShouldNotReachHere(); | |
2972 } | |
304 | 2973 #endif // LP64 |
0 | 2974 } else { |
2975 ShouldNotReachHere(); | |
2976 } | |
2977 } | |
2978 | |
2979 | |
2980 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { | |
2981 if (dest->is_single_cpu()) { | |
2982 // first move left into dest so that left is not destroyed by the shift | |
2983 Register value = dest->as_register(); | |
2984 count = count & 0x1F; // Java spec | |
2985 | |
2986 move_regs(left->as_register(), value); | |
2987 switch (code) { | |
2988 case lir_shl: __ shll(value, count); break; | |
2989 case lir_shr: __ sarl(value, count); break; | |
2990 case lir_ushr: __ shrl(value, count); break; | |
2991 default: ShouldNotReachHere(); | |
2992 } | |
2993 } else if (dest->is_double_cpu()) { | |
304 | 2994 #ifndef _LP64 |
0 | 2995 Unimplemented(); |
304 | 2996 #else |
2997 // first move left into dest so that left is not destroyed by the shift | |
2998 Register value = dest->as_register_lo(); | |
2999 count = count & 0x1F; // Java spec | |
3000 | |
3001 move_regs(left->as_register_lo(), value); | |
3002 switch (code) { | |
3003 case lir_shl: __ shlptr(value, count); break; | |
3004 case lir_shr: __ sarptr(value, count); break; | |
3005 case lir_ushr: __ shrptr(value, count); break; | |
3006 default: ShouldNotReachHere(); | |
3007 } | |
3008 #endif // _LP64 | |
0 | 3009 } else { |
3010 ShouldNotReachHere(); | |
3011 } | |
3012 } | |
3013 | |
3014 | |
3015 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { | |
3016 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3017 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3018 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 3019 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); |
0 | 3020 } |
3021 | |
3022 | |
3023 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { | |
3024 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3025 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3026 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
304 | 3027 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); |
0 | 3028 } |
3029 | |
3030 | |
3031 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { | |
3032 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); | |
3033 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; | |
3034 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); | |
3035 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); | |
3036 } | |
3037 | |
3038 | |
3039 // This code replaces a call to arraycopy; no exception may | |
3040 // be thrown in this code, they must be thrown in the System.arraycopy | |
3041 // activation frame; we could save some checks if this would not be the case | |
3042 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { | |
3043 ciArrayKlass* default_type = op->expected_type(); | |
3044 Register src = op->src()->as_register(); | |
3045 Register dst = op->dst()->as_register(); | |
3046 Register src_pos = op->src_pos()->as_register(); | |
3047 Register dst_pos = op->dst_pos()->as_register(); | |
3048 Register length = op->length()->as_register(); | |
3049 Register tmp = op->tmp()->as_register(); | |
3050 | |
3051 CodeStub* stub = op->stub(); | |
3052 int flags = op->flags(); | |
3053 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; | |
3054 if (basic_type == T_ARRAY) basic_type = T_OBJECT; | |
3055 | |
3056 // if we don't know anything or it's an object array, just go through the generic arraycopy | |
3057 if (default_type == NULL) { | |
3058 Label done; | |
3059 // save outgoing arguments on stack in case call to System.arraycopy is needed | |
3060 // HACK ALERT. This code used to push the parameters in a hardwired fashion | |
3061 // for interpreter calling conventions. Now we have to do it in new style conventions. | |
3062 // For the moment until C1 gets the new register allocator I just force all the | |
3063 // args to the right place (except the register args) and then on the back side | |
3064 // reload the register args properly if we go slow path. Yuck | |
3065 | |
3066 // These are proper for the calling convention | |
3067 | |
3068 store_parameter(length, 2); | |
3069 store_parameter(dst_pos, 1); | |
3070 store_parameter(dst, 0); | |
3071 | |
3072 // these are just temporary placements until we need to reload | |
3073 store_parameter(src_pos, 3); | |
3074 store_parameter(src, 4); | |
304 | 3075 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) |
3076 | |
3077 address entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); | |
0 | 3078 |
3079 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint | |
304 | 3080 #ifdef _LP64 |
3081 // The arguments are in java calling convention so we can trivially shift them to C | |
3082 // convention | |
3083 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3084 __ mov(c_rarg0, j_rarg0); | |
3085 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); | |
3086 __ mov(c_rarg1, j_rarg1); | |
3087 assert_different_registers(c_rarg2, j_rarg3, j_rarg4); | |
3088 __ mov(c_rarg2, j_rarg2); | |
3089 assert_different_registers(c_rarg3, j_rarg4); | |
3090 __ mov(c_rarg3, j_rarg3); | |
3091 #ifdef _WIN64 | |
3092 // Allocate abi space for args but be sure to keep stack aligned | |
3093 __ subptr(rsp, 6*wordSize); | |
3094 store_parameter(j_rarg4, 4); | |
3095 __ call(RuntimeAddress(entry)); | |
3096 __ addptr(rsp, 6*wordSize); | |
3097 #else | |
3098 __ mov(c_rarg4, j_rarg4); | |
3099 __ call(RuntimeAddress(entry)); | |
3100 #endif // _WIN64 | |
3101 #else | |
3102 __ push(length); | |
3103 __ push(dst_pos); | |
3104 __ push(dst); | |
3105 __ push(src_pos); | |
3106 __ push(src); | |
0 | 3107 __ call_VM_leaf(entry, 5); // removes pushed parameter from the stack |
3108 | |
304 | 3109 #endif // _LP64 |
3110 | |
0 | 3111 __ cmpl(rax, 0); |
3112 __ jcc(Assembler::equal, *stub->continuation()); | |
3113 | |
3114 // Reload values from the stack so they are where the stub | |
3115 // expects them. | |
304 | 3116 __ movptr (dst, Address(rsp, 0*BytesPerWord)); |
3117 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); | |
3118 __ movptr (length, Address(rsp, 2*BytesPerWord)); | |
3119 __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); | |
3120 __ movptr (src, Address(rsp, 4*BytesPerWord)); | |
0 | 3121 __ jmp(*stub->entry()); |
3122 | |
3123 __ bind(*stub->continuation()); | |
3124 return; | |
3125 } | |
3126 | |
3127 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); | |
3128 | |
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3129 int elem_size = type2aelembytes(basic_type); |
0 | 3130 int shift_amount; |
3131 Address::ScaleFactor scale; | |
3132 | |
3133 switch (elem_size) { | |
3134 case 1 : | |
3135 shift_amount = 0; | |
3136 scale = Address::times_1; | |
3137 break; | |
3138 case 2 : | |
3139 shift_amount = 1; | |
3140 scale = Address::times_2; | |
3141 break; | |
3142 case 4 : | |
3143 shift_amount = 2; | |
3144 scale = Address::times_4; | |
3145 break; | |
3146 case 8 : | |
3147 shift_amount = 3; | |
3148 scale = Address::times_8; | |
3149 break; | |
3150 default: | |
3151 ShouldNotReachHere(); | |
3152 } | |
3153 | |
3154 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); | |
3155 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); | |
3156 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); | |
3157 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); | |
3158 | |
304 | 3159 // length and pos's are all sign extended at this point on 64bit |
3160 | |
0 | 3161 // test for NULL |
3162 if (flags & LIR_OpArrayCopy::src_null_check) { | |
304 | 3163 __ testptr(src, src); |
0 | 3164 __ jcc(Assembler::zero, *stub->entry()); |
3165 } | |
3166 if (flags & LIR_OpArrayCopy::dst_null_check) { | |
304 | 3167 __ testptr(dst, dst); |
0 | 3168 __ jcc(Assembler::zero, *stub->entry()); |
3169 } | |
3170 | |
3171 // check if negative | |
3172 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { | |
3173 __ testl(src_pos, src_pos); | |
3174 __ jcc(Assembler::less, *stub->entry()); | |
3175 } | |
3176 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { | |
3177 __ testl(dst_pos, dst_pos); | |
3178 __ jcc(Assembler::less, *stub->entry()); | |
3179 } | |
3180 if (flags & LIR_OpArrayCopy::length_positive_check) { | |
3181 __ testl(length, length); | |
3182 __ jcc(Assembler::less, *stub->entry()); | |
3183 } | |
3184 | |
3185 if (flags & LIR_OpArrayCopy::src_range_check) { | |
304 | 3186 __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); |
0 | 3187 __ cmpl(tmp, src_length_addr); |
3188 __ jcc(Assembler::above, *stub->entry()); | |
3189 } | |
3190 if (flags & LIR_OpArrayCopy::dst_range_check) { | |
304 | 3191 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); |
0 | 3192 __ cmpl(tmp, dst_length_addr); |
3193 __ jcc(Assembler::above, *stub->entry()); | |
3194 } | |
3195 | |
3196 if (flags & LIR_OpArrayCopy::type_check) { | |
304 | 3197 __ movptr(tmp, src_klass_addr); |
3198 __ cmpptr(tmp, dst_klass_addr); | |
0 | 3199 __ jcc(Assembler::notEqual, *stub->entry()); |
3200 } | |
3201 | |
3202 #ifdef ASSERT | |
3203 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { | |
3204 // Sanity check the known type with the incoming class. For the | |
3205 // primitive case the types must match exactly with src.klass and | |
3206 // dst.klass each exactly matching the default type. For the | |
3207 // object array case, if no type check is needed then either the | |
3208 // dst type is exactly the expected type and the src type is a | |
3209 // subtype which we can't check or src is the same array as dst | |
3210 // but not necessarily exactly of type default_type. | |
3211 Label known_ok, halt; | |
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3212 __ movoop(tmp, default_type->constant_encoding()); |
0 | 3213 if (basic_type != T_OBJECT) { |
304 | 3214 __ cmpptr(tmp, dst_klass_addr); |
0 | 3215 __ jcc(Assembler::notEqual, halt); |
304 | 3216 __ cmpptr(tmp, src_klass_addr); |
0 | 3217 __ jcc(Assembler::equal, known_ok); |
3218 } else { | |
304 | 3219 __ cmpptr(tmp, dst_klass_addr); |
0 | 3220 __ jcc(Assembler::equal, known_ok); |
304 | 3221 __ cmpptr(src, dst); |
0 | 3222 __ jcc(Assembler::equal, known_ok); |
3223 } | |
3224 __ bind(halt); | |
3225 __ stop("incorrect type information in arraycopy"); | |
3226 __ bind(known_ok); | |
3227 } | |
3228 #endif | |
3229 | |
304 | 3230 if (shift_amount > 0 && basic_type != T_OBJECT) { |
3231 __ shlptr(length, shift_amount); | |
3232 } | |
3233 | |
3234 #ifdef _LP64 | |
3235 assert_different_registers(c_rarg0, dst, dst_pos, length); | |
1060 | 3236 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null |
304 | 3237 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3238 assert_different_registers(c_rarg1, length); | |
1060 | 3239 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null |
304 | 3240 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
3241 __ mov(c_rarg2, length); | |
3242 | |
3243 #else | |
3244 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); | |
0 | 3245 store_parameter(tmp, 0); |
304 | 3246 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
0 | 3247 store_parameter(tmp, 1); |
3248 store_parameter(length, 2); | |
304 | 3249 #endif // _LP64 |
0 | 3250 if (basic_type == T_OBJECT) { |
3251 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy), 0); | |
3252 } else { | |
3253 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy), 0); | |
3254 } | |
3255 | |
3256 __ bind(*stub->continuation()); | |
3257 } | |
3258 | |
3259 | |
3260 void LIR_Assembler::emit_lock(LIR_OpLock* op) { | |
3261 Register obj = op->obj_opr()->as_register(); // may not be an oop | |
3262 Register hdr = op->hdr_opr()->as_register(); | |
3263 Register lock = op->lock_opr()->as_register(); | |
3264 if (!UseFastLocking) { | |
3265 __ jmp(*op->stub()->entry()); | |
3266 } else if (op->code() == lir_lock) { | |
3267 Register scratch = noreg; | |
3268 if (UseBiasedLocking) { | |
3269 scratch = op->scratch_opr()->as_register(); | |
3270 } | |
3271 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3272 // add debug info for NullPointerException only if one is possible | |
3273 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); | |
3274 if (op->info() != NULL) { | |
3275 add_debug_info_for_null_check(null_check_offset, op->info()); | |
3276 } | |
3277 // done | |
3278 } else if (op->code() == lir_unlock) { | |
3279 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); | |
3280 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); | |
3281 } else { | |
3282 Unimplemented(); | |
3283 } | |
3284 __ bind(*op->stub()->continuation()); | |
3285 } | |
3286 | |
3287 | |
3288 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { | |
3289 ciMethod* method = op->profiled_method(); | |
3290 int bci = op->profiled_bci(); | |
3291 | |
3292 // Update counter for all call types | |
3293 ciMethodData* md = method->method_data(); | |
3294 if (md == NULL) { | |
3295 bailout("out of memory building methodDataOop"); | |
3296 return; | |
3297 } | |
3298 ciProfileData* data = md->bci_to_data(bci); | |
3299 assert(data->is_CounterData(), "need CounterData for calls"); | |
3300 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); | |
3301 Register mdo = op->mdo()->as_register(); | |
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|
3302 __ movoop(mdo, md->constant_encoding()); |
0 | 3303 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); |
3304 Bytecodes::Code bc = method->java_code_at_bci(bci); | |
3305 // Perform additional virtual call profiling for invokevirtual and | |
3306 // invokeinterface bytecodes | |
3307 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && | |
1783 | 3308 C1ProfileVirtualCalls) { |
0 | 3309 assert(op->recv()->is_single_cpu(), "recv must be allocated"); |
3310 Register recv = op->recv()->as_register(); | |
3311 assert_different_registers(mdo, recv); | |
3312 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); | |
3313 ciKlass* known_klass = op->known_holder(); | |
1783 | 3314 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { |
0 | 3315 // We know the type that will be seen at this call site; we can |
3316 // statically update the methodDataOop rather than needing to do | |
3317 // dynamic tests on the receiver type | |
3318 | |
3319 // NOTE: we should probably put a lock around this search to | |
3320 // avoid collisions by concurrent compilations | |
3321 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; | |
3322 uint i; | |
3323 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3324 ciKlass* receiver = vc_data->receiver(i); | |
3325 if (known_klass->equals(receiver)) { | |
3326 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); | |
1783 | 3327 __ addptr(data_addr, DataLayout::counter_increment); |
0 | 3328 return; |
3329 } | |
3330 } | |
3331 | |
3332 // Receiver type not found in profile data; select an empty slot | |
3333 | |
3334 // Note that this is less efficient than it should be because it | |
3335 // always does a write to the receiver part of the | |
3336 // VirtualCallData rather than just the first time | |
3337 for (i = 0; i < VirtualCallData::row_limit(); i++) { | |
3338 ciKlass* receiver = vc_data->receiver(i); | |
3339 if (receiver == NULL) { | |
3340 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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parents:
780
diff
changeset
|
3341 __ movoop(recv_addr, known_klass->constant_encoding()); |
0 | 3342 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); |
1783 | 3343 __ addptr(data_addr, DataLayout::counter_increment); |
0 | 3344 return; |
3345 } | |
3346 } | |
3347 } else { | |
304 | 3348 __ movptr(recv, Address(recv, oopDesc::klass_offset_in_bytes())); |
0 | 3349 Label update_done; |
1783 | 3350 type_profile_helper(mdo, md, data, recv, &update_done); |
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1204
diff
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|
3351 // Receiver did not match any saved receiver and there is no empty row for it. |
1251
576e77447e3c
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parents:
1206
diff
changeset
|
3352 // Increment total counter to indicate polymorphic case. |
1783 | 3353 __ addptr(counter_addr, DataLayout::counter_increment); |
0 | 3354 |
3355 __ bind(update_done); | |
3356 } | |
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diff
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|
3357 } else { |
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diff
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|
3358 // Static call |
1783 | 3359 __ addptr(counter_addr, DataLayout::counter_increment); |
0 | 3360 } |
3361 } | |
3362 | |
3363 void LIR_Assembler::emit_delay(LIR_OpDelay*) { | |
3364 Unimplemented(); | |
3365 } | |
3366 | |
3367 | |
3368 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { | |
304 | 3369 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); |
0 | 3370 } |
3371 | |
3372 | |
3373 void LIR_Assembler::align_backward_branch_target() { | |
3374 __ align(BytesPerWord); | |
3375 } | |
3376 | |
3377 | |
3378 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { | |
3379 if (left->is_single_cpu()) { | |
3380 __ negl(left->as_register()); | |
3381 move_regs(left->as_register(), dest->as_register()); | |
3382 | |
3383 } else if (left->is_double_cpu()) { | |
3384 Register lo = left->as_register_lo(); | |
304 | 3385 #ifdef _LP64 |
3386 Register dst = dest->as_register_lo(); | |
3387 __ movptr(dst, lo); | |
3388 __ negptr(dst); | |
3389 #else | |
0 | 3390 Register hi = left->as_register_hi(); |
3391 __ lneg(hi, lo); | |
3392 if (dest->as_register_lo() == hi) { | |
3393 assert(dest->as_register_hi() != lo, "destroying register"); | |
3394 move_regs(hi, dest->as_register_hi()); | |
3395 move_regs(lo, dest->as_register_lo()); | |
3396 } else { | |
3397 move_regs(lo, dest->as_register_lo()); | |
3398 move_regs(hi, dest->as_register_hi()); | |
3399 } | |
304 | 3400 #endif // _LP64 |
0 | 3401 |
3402 } else if (dest->is_single_xmm()) { | |
3403 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { | |
3404 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); | |
3405 } | |
3406 __ xorps(dest->as_xmm_float_reg(), | |
3407 ExternalAddress((address)float_signflip_pool)); | |
3408 | |
3409 } else if (dest->is_double_xmm()) { | |
3410 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { | |
3411 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); | |
3412 } | |
3413 __ xorpd(dest->as_xmm_double_reg(), | |
3414 ExternalAddress((address)double_signflip_pool)); | |
3415 | |
3416 } else if (left->is_single_fpu() || left->is_double_fpu()) { | |
3417 assert(left->fpu() == 0, "arg must be on TOS"); | |
3418 assert(dest->fpu() == 0, "dest must be TOS"); | |
3419 __ fchs(); | |
3420 | |
3421 } else { | |
3422 ShouldNotReachHere(); | |
3423 } | |
3424 } | |
3425 | |
3426 | |
3427 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { | |
3428 assert(addr->is_address() && dest->is_register(), "check"); | |
304 | 3429 Register reg; |
3430 reg = dest->as_pointer_register(); | |
3431 __ lea(reg, as_Address(addr->as_address_ptr())); | |
0 | 3432 } |
3433 | |
3434 | |
3435 | |
3436 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { | |
3437 assert(!tmp->is_valid(), "don't need temporary"); | |
3438 __ call(RuntimeAddress(dest)); | |
3439 if (info != NULL) { | |
3440 add_call_info_here(info); | |
3441 } | |
3442 } | |
3443 | |
3444 | |
3445 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { | |
3446 assert(type == T_LONG, "only for volatile long fields"); | |
3447 | |
3448 if (info != NULL) { | |
3449 add_debug_info_for_null_check_here(info); | |
3450 } | |
3451 | |
3452 if (src->is_double_xmm()) { | |
3453 if (dest->is_double_cpu()) { | |
304 | 3454 #ifdef _LP64 |
3455 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); | |
3456 #else | |
3457 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); | |
0 | 3458 __ psrlq(src->as_xmm_double_reg(), 32); |
304 | 3459 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); |
3460 #endif // _LP64 | |
0 | 3461 } else if (dest->is_double_stack()) { |
3462 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); | |
3463 } else if (dest->is_address()) { | |
3464 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); | |
3465 } else { | |
3466 ShouldNotReachHere(); | |
3467 } | |
3468 | |
3469 } else if (dest->is_double_xmm()) { | |
3470 if (src->is_double_stack()) { | |
3471 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); | |
3472 } else if (src->is_address()) { | |
3473 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); | |
3474 } else { | |
3475 ShouldNotReachHere(); | |
3476 } | |
3477 | |
3478 } else if (src->is_double_fpu()) { | |
3479 assert(src->fpu_regnrLo() == 0, "must be TOS"); | |
3480 if (dest->is_double_stack()) { | |
3481 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); | |
3482 } else if (dest->is_address()) { | |
3483 __ fistp_d(as_Address(dest->as_address_ptr())); | |
3484 } else { | |
3485 ShouldNotReachHere(); | |
3486 } | |
3487 | |
3488 } else if (dest->is_double_fpu()) { | |
3489 assert(dest->fpu_regnrLo() == 0, "must be TOS"); | |
3490 if (src->is_double_stack()) { | |
3491 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); | |
3492 } else if (src->is_address()) { | |
3493 __ fild_d(as_Address(src->as_address_ptr())); | |
3494 } else { | |
3495 ShouldNotReachHere(); | |
3496 } | |
3497 } else { | |
3498 ShouldNotReachHere(); | |
3499 } | |
3500 } | |
3501 | |
3502 | |
3503 void LIR_Assembler::membar() { | |
304 | 3504 // QQQ sparc TSO uses this, |
3505 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); | |
0 | 3506 } |
3507 | |
3508 void LIR_Assembler::membar_acquire() { | |
3509 // No x86 machines currently require load fences | |
3510 // __ load_fence(); | |
3511 } | |
3512 | |
3513 void LIR_Assembler::membar_release() { | |
3514 // No x86 machines currently require store fences | |
3515 // __ store_fence(); | |
3516 } | |
3517 | |
3518 void LIR_Assembler::get_thread(LIR_Opr result_reg) { | |
3519 assert(result_reg->is_register(), "check"); | |
304 | 3520 #ifdef _LP64 |
3521 // __ get_thread(result_reg->as_register_lo()); | |
3522 __ mov(result_reg->as_register(), r15_thread); | |
3523 #else | |
0 | 3524 __ get_thread(result_reg->as_register()); |
304 | 3525 #endif // _LP64 |
0 | 3526 } |
3527 | |
3528 | |
3529 void LIR_Assembler::peephole(LIR_List*) { | |
3530 // do nothing for now | |
3531 } | |
3532 | |
3533 | |
3534 #undef __ |